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Tie X, Shin M, Lee C, Perlman SB, Huemann Z, Weisman AJ, Castellino SM, Kelly KM, McCarten KM, Alazraki AL, Hu J, Cho SY, Bradshaw TJ. Automatic Quantification of Serial PET/CT Images for Pediatric Hodgkin Lymphoma Patients Using a Longitudinally-Aware Segmentation Network. ArXiv 2024:arXiv:2404.08611v1. [PMID: 38659641 PMCID: PMC11042444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Purpose Automatic quantification of longitudinal changes in PET scans for lymphoma patients has proven challenging, as residual disease in interim-therapy scans is often subtle and difficult to detect. Our goal was to develop a longitudinally-aware segmentation network (LAS-Net) that can quantify serial PET/CT images for pediatric Hodgkin lymphoma patients. Materials and Methods This retrospective study included baseline (PET1) and interim (PET2) PET/CT images from 297 patients enrolled in two Children's Oncology Group clinical trials (AHOD1331 and AHOD0831). LAS-Net incorporates longitudinal cross-attention, allowing relevant features from PET1 to inform the analysis of PET2. Model performance was evaluated using Dice coefficients for PET1 and detection F1 scores for PET2. Additionally, we extracted and compared quantitative PET metrics, including metabolic tumor volume (MTV) and total lesion glycolysis (TLG) in PET1, as well as qPET and ΔSUVmax in PET2, against physician measurements. We quantified their agreement using Spearman's ρ correlations and employed bootstrap resampling for statistical analysis. Results LAS-Net detected residual lymphoma in PET2 with an F1 score of 0.606 (precision/recall: 0.615/0.600), outperforming all comparator methods (P<0.01). For baseline segmentation, LAS-Net achieved a mean Dice score of 0.772. In PET quantification, LAS-Net's measurements of qPET, ΔSUVmax, MTV and TLG were strongly correlated with physician measurements, with Spearman's ρ of 0.78, 0.80, 0.93 and 0.96, respectively. The performance remained high, with a slight decrease, in an external testing cohort. Conclusion LAS-Net achieved high performance in quantifying PET metrics across serial scans, highlighting the value of longitudinal awareness in evaluating multi-time-point imaging datasets.
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Affiliation(s)
- Xin Tie
- Department of Radiology, University of Wisconsin, Madison, WI, USA
- Department of Medical Physics, University of Wisconsin, Madison, WI, USA
| | - Muheon Shin
- Department of Radiology, University of Wisconsin, Madison, WI, USA
| | - Changhee Lee
- Department of Radiology, University of Wisconsin, Madison, WI, USA
| | - Scott B Perlman
- Department of Radiology, University of Wisconsin, Madison, WI, USA
- University of Wisconsin Carbone Comprehensive Cancer Center, Madison, WI, USA
| | - Zachary Huemann
- Department of Radiology, University of Wisconsin, Madison, WI, USA
| | - Amy J Weisman
- Department of Medical Physics, University of Wisconsin, Madison, WI, USA
| | - Sharon M Castellino
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Kara M Kelly
- Department of Pediatric Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
- Department of Pediatrics, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY, USA
| | - Kathleen M McCarten
- Pediatric Radiology, Imaging and Radiation Oncology Core Rhode Island, Lincoln, RI, USA
| | - Adina L Alazraki
- Department of Radiology, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Junjie Hu
- Department of Biostatistics and Medical Informatics, University of Wisconsin, Madison, WI, USA
- Department of Computer Science, School of Computer, University of Wisconsin, Madison, WI, USA
| | - Steve Y Cho
- Department of Radiology, University of Wisconsin, Madison, WI, USA
- University of Wisconsin Carbone Comprehensive Cancer Center, Madison, WI, USA
| | - Tyler J Bradshaw
- Department of Radiology, University of Wisconsin, Madison, WI, USA
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Cho SY, Kim Z, Chung DR, Cho BH, Chung MJ, Kim JH, Jeong J. Development of machine learning models for the surveillance of colon surgical site infections. J Hosp Infect 2024; 146:224-231. [PMID: 37094715 DOI: 10.1016/j.jhin.2023.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 03/21/2023] [Accepted: 03/24/2023] [Indexed: 04/26/2023]
Abstract
BACKGROUND Conventional surgical site infection (SSI) surveillance is labour-intensive. We aimed to develop machine learning (ML) models for the surveillance of SSIs for colon surgery and to assess whether the ML could improve surveillance process efficiency. METHODS This study included cases who underwent colon surgery at a tertiary center between 2013 and 2014. Logistic regression and four ML algorithms including random forest (RF), gradient boosting (GB), and neural networks (NNs) with or without recursive feature elimination (RFE) were first trained on the entire cohort, and then re-trained on cases selected based on a previous rule-based algorithm. We assessed model performance based on the area under the curve (AUC), sensitivity, and positive predictive value (PPV). The estimated proportion of reduction in workload for chart review based on the ML models was evaluated and compared with the conventional method. RESULTS At a sensitivity of 95%, the NN with RFE using 29 variables had the best performance with an AUC of 0.963 and PPV of 21.1%. When combining both the rule-based algorithm and ML algorithms, the NN with RFE using 19 variables had a higher PPV (28.9%) than with the ML algorithm alone, which could decrease the number of cases requiring chart review by 83.9% compared with the conventional method. CONCLUSION We demonstrated that ML can improve the efficiency of SSI surveillance for colon surgery by decreasing the burden of chart review while providing high sensitivity. In particular, the hybrid approach of ML with a rule-based algorithm showed the best performance in terms of PPV.
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Affiliation(s)
- S Y Cho
- Center for Infection Prevention and Control, Samsung Medical Center, Seoul, Republic of Korea; Division of Infectious Diseases, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Z Kim
- Medical AI Research Center, Samsung Medical Center, Seoul, Republic of Korea; Department of Data Convergence and Future Medicine, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - D R Chung
- Center for Infection Prevention and Control, Samsung Medical Center, Seoul, Republic of Korea; Division of Infectious Diseases, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - B H Cho
- Department of Biomedical Informatics, CHA University School of Medicine, CHA University, Seongnam, Republic of Korea; Institute of Biomedical Informatics, School of Medicine, CHA University, Seongnam, Republic of Korea
| | - M J Chung
- Medical AI Research Center, Samsung Medical Center, Seoul, Republic of Korea; Department of Data Convergence and Future Medicine, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J H Kim
- Department of Biomedical Science, Korea University College of Medicine, Seoul, Republic of Korea
| | - J Jeong
- Center for Infection Prevention and Control, Samsung Medical Center, Seoul, Republic of Korea
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Tie X, Shin M, Pirasteh A, Ibrahim N, Huemann Z, Castellino SM, Kelly KM, Garrett J, Hu J, Cho SY, Bradshaw TJ. Personalized Impression Generation for PET Reports Using Large Language Models. J Imaging Inform Med 2024; 37:471-488. [PMID: 38308070 PMCID: PMC11031527 DOI: 10.1007/s10278-024-00985-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 02/04/2024]
Abstract
Large language models (LLMs) have shown promise in accelerating radiology reporting by summarizing clinical findings into impressions. However, automatic impression generation for whole-body PET reports presents unique challenges and has received little attention. Our study aimed to evaluate whether LLMs can create clinically useful impressions for PET reporting. To this end, we fine-tuned twelve open-source language models on a corpus of 37,370 retrospective PET reports collected from our institution. All models were trained using the teacher-forcing algorithm, with the report findings and patient information as input and the original clinical impressions as reference. An extra input token encoded the reading physician's identity, allowing models to learn physician-specific reporting styles. To compare the performances of different models, we computed various automatic evaluation metrics and benchmarked them against physician preferences, ultimately selecting PEGASUS as the top LLM. To evaluate its clinical utility, three nuclear medicine physicians assessed the PEGASUS-generated impressions and original clinical impressions across 6 quality dimensions (3-point scales) and an overall utility score (5-point scale). Each physician reviewed 12 of their own reports and 12 reports from other physicians. When physicians assessed LLM impressions generated in their own style, 89% were considered clinically acceptable, with a mean utility score of 4.08/5. On average, physicians rated these personalized impressions as comparable in overall utility to the impressions dictated by other physicians (4.03, P = 0.41). In summary, our study demonstrated that personalized impressions generated by PEGASUS were clinically useful in most cases, highlighting its potential to expedite PET reporting by automatically drafting impressions.
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Affiliation(s)
- Xin Tie
- Department of Radiology, School of Medicine and Public Health, University of Wissconsin, Madison, WI, USA
- Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Muheon Shin
- Department of Radiology, School of Medicine and Public Health, University of Wissconsin, Madison, WI, USA
| | - Ali Pirasteh
- Department of Radiology, School of Medicine and Public Health, University of Wissconsin, Madison, WI, USA
- Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Nevein Ibrahim
- Department of Radiology, School of Medicine and Public Health, University of Wissconsin, Madison, WI, USA
| | - Zachary Huemann
- Department of Radiology, School of Medicine and Public Health, University of Wissconsin, Madison, WI, USA
| | - Sharon M Castellino
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
- Aflac Cancer and Blood Disorders Center, Childrens Healthcare of Atlanta, Atlanta, GA, USA
| | - Kara M Kelly
- Department of Pediatric Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
- Department of Pediatrics, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY, USA
| | - John Garrett
- Department of Radiology, School of Medicine and Public Health, University of Wissconsin, Madison, WI, USA
- Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | - Junjie Hu
- Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
- Department of Computer Science, School of Computer, Data and Information Sciences, University of Wisconsin, Madison, WI, USA
| | - Steve Y Cho
- Department of Radiology, School of Medicine and Public Health, University of Wissconsin, Madison, WI, USA
- University of Wisconsin Carbone Comprehensive Cancer Center, Madison, WI, USA
| | - Tyler J Bradshaw
- Department of Radiology, School of Medicine and Public Health, University of Wissconsin, Madison, WI, USA.
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Adam DP, Grudzinski JJ, Marsh IR, Hill PM, Cho SY, Bradshaw TJ, Longcor J, Burr A, Bruce JY, Harari PM, Bednarz BP. Voxel-level dosimetry for combined Iodine-131 radiopharmaceutical therapy and external beam radiotherapy treatment paradigms of head and neck cancer. Int J Radiat Oncol Biol Phys 2024:S0360-3016(24)00308-0. [PMID: 38367914 DOI: 10.1016/j.ijrobp.2024.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/20/2023] [Accepted: 02/08/2024] [Indexed: 02/19/2024]
Abstract
PURPOSE Targeted radiopharmaceutical therapy (RPT) in combination with external beam radiotherapy (EBRT) shows promise as a method to increase tumor control and mitigate potential high-grade toxicities associated with re-treatment for patients with recurrent head and neck cancer. This work establishes a patient-specific dosimetry framework that combines Monte Carlo based dosimetry from the two radiation modalities at the voxel level using deformable image registration (DIR) and radiobiological constructs for patients enrolled in a phase I clinical trial combining EBRT and RPT. METHODS Serial SPECT/CT patient scans performed at approximately 24, 48, 72, and 168 hours post-injection of 577.2 MBq/m2 (15.6 mCi/m2) iodine-131 containing RPT agent called XXX 131. Clinical EBRT treatment plans were created on a treatment planning CT (TPCT) using RayStation; SPECT/CT images were deformably registered to the TPCT using the Elastix DIR module in 3D Slicer and assessed by measuring mean activity concentrations and absorbed doses. Monte Carlo EBRT dosimetry was computed using EGSnrc. RPT dosimetry was conducted using a GEANT4 based RPT dosimetry platform named XXX. Radiobiological metrics (BED, EQD2) were utilized to combine the two radiation modalities. RESULTS The DIR method provided good agreement for the activity concentrations and calculated absorbed dose in the tumor volumes for the SPECT/CT and TPCT; the maximum mean absorbed dose difference was -11.2%. Based on the RPT absorbed dose calculations, two to four EBRT fractions were removed from patients' EBRT treatments. From the combined treatment, the absorbed dose to target volumes ranged from 57.14 - 75.02 Gy. When including partial volume corrections (PVC), the mean EQD2 to the PTV from EBRT+RPT was -3.11% to 1.40% different compared to EBRT alone. CONCLUSION This work demonstrated the clinical feasibility of performing combined EBRT+RPT dosimetry on TPCTs. Dosimetry guides treatment decisions for EBRT and this work provides a bridge for the same paradigm to be implemented within the rapidly emerging clinical RPT space.
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Affiliation(s)
- David P Adam
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Joseph J Grudzinski
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI
| | - Ian R Marsh
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Patrick M Hill
- Department of Human Oncology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI
| | - Steve Y Cho
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI; University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Tyler J Bradshaw
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI
| | | | - Adam Burr
- Department of Human Oncology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI; University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Justine Y Bruce
- Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI; University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Paul M Harari
- Department of Human Oncology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI; University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Bryan P Bednarz
- Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI.
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Yousefirizi F, Klyuzhin IS, O JH, Harsini S, Tie X, Shiri I, Shin M, Lee C, Cho SY, Bradshaw TJ, Zaidi H, Bénard F, Sehn LH, Savage KJ, Steidl C, Uribe CF, Rahmim A. TMTV-Net: fully automated total metabolic tumor volume segmentation in lymphoma PET/CT images - a multi-center generalizability analysis. Eur J Nucl Med Mol Imaging 2024:10.1007/s00259-024-06616-x. [PMID: 38326655 DOI: 10.1007/s00259-024-06616-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 01/15/2024] [Indexed: 02/09/2024]
Abstract
PURPOSE Total metabolic tumor volume (TMTV) segmentation has significant value enabling quantitative imaging biomarkers for lymphoma management. In this work, we tackle the challenging task of automated tumor delineation in lymphoma from PET/CT scans using a cascaded approach. METHODS Our study included 1418 2-[18F]FDG PET/CT scans from four different centers. The dataset was divided into 900 scans for development/validation/testing phases and 518 for multi-center external testing. The former consisted of 450 lymphoma, lung cancer, and melanoma scans, along with 450 negative scans, while the latter consisted of lymphoma patients from different centers with diffuse large B cell, primary mediastinal large B cell, and classic Hodgkin lymphoma cases. Our approach involves resampling PET/CT images into different voxel sizes in the first step, followed by training multi-resolution 3D U-Nets on each resampled dataset using a fivefold cross-validation scheme. The models trained on different data splits were ensemble. After applying soft voting to the predicted masks, in the second step, we input the probability-averaged predictions, along with the input imaging data, into another 3D U-Net. Models were trained with semi-supervised loss. We additionally considered the effectiveness of using test time augmentation (TTA) to improve the segmentation performance after training. In addition to quantitative analysis including Dice score (DSC) and TMTV comparisons, the qualitative evaluation was also conducted by nuclear medicine physicians. RESULTS Our cascaded soft-voting guided approach resulted in performance with an average DSC of 0.68 ± 0.12 for the internal test data from developmental dataset, and an average DSC of 0.66 ± 0.18 on the multi-site external data (n = 518), significantly outperforming (p < 0.001) state-of-the-art (SOTA) approaches including nnU-Net and SWIN UNETR. While TTA yielded enhanced performance gains for some of the comparator methods, its impact on our cascaded approach was found to be negligible (DSC: 0.66 ± 0.16). Our approach reliably quantified TMTV, with a correlation of 0.89 with the ground truth (p < 0.001). Furthermore, in terms of visual assessment, concordance between quantitative evaluations and clinician feedback was observed in the majority of cases. The average relative error (ARE) and the absolute error (AE) in TMTV prediction on external multi-centric dataset were ARE = 0.43 ± 0.54 and AE = 157.32 ± 378.12 (mL) for all the external test data (n = 518), and ARE = 0.30 ± 0.22 and AE = 82.05 ± 99.78 (mL) when the 10% outliers (n = 53) were excluded. CONCLUSION TMTV-Net demonstrates strong performance and generalizability in TMTV segmentation across multi-site external datasets, encompassing various lymphoma subtypes. A negligible reduction of 2% in overall performance during testing on external data highlights robust model generalizability across different centers and cancer types, likely attributable to its training with resampled inputs. Our model is publicly available, allowing easy multi-site evaluation and generalizability analysis on datasets from different institutions.
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Affiliation(s)
- Fereshteh Yousefirizi
- Department of Integrative Oncology, BC Cancer Research Institute, 675 West 10Th Avenue, Vancouver, BC, V5Z 1L3, Canada.
| | - Ivan S Klyuzhin
- Department of Integrative Oncology, BC Cancer Research Institute, 675 West 10Th Avenue, Vancouver, BC, V5Z 1L3, Canada
| | - Joo Hyun O
- College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | | | - Xin Tie
- Department of Radiology, University of WI-Madison, Madison, WI, USA
| | - Isaac Shiri
- Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, Geneva, Switzerland
| | - Muheon Shin
- Department of Radiology, University of WI-Madison, Madison, WI, USA
| | - Changhee Lee
- Department of Radiology, University of WI-Madison, Madison, WI, USA
| | - Steve Y Cho
- Department of Radiology, University of WI-Madison, Madison, WI, USA
| | - Tyler J Bradshaw
- Department of Radiology, University of WI-Madison, Madison, WI, USA
| | - Habib Zaidi
- Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, Geneva, Switzerland
- University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Nuclear Medicine, University of Southern Denmark, Odense, Denmark
- University Research and Innovation Center, Óbuda University, Budapest, Hungary
| | - François Bénard
- BC Cancer, Vancouver, BC, Canada
- Department of Radiology, University of British Columbia, Vancouver, BC, Canada
| | - Laurie H Sehn
- BC Cancer, Vancouver, BC, Canada
- Centre for Lymphoid Cancer, BC Cancer, Vancouver, Canada
| | - Kerry J Savage
- BC Cancer, Vancouver, BC, Canada
- Centre for Lymphoid Cancer, BC Cancer, Vancouver, Canada
| | - Christian Steidl
- BC Cancer, Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
| | - Carlos F Uribe
- Department of Integrative Oncology, BC Cancer Research Institute, 675 West 10Th Avenue, Vancouver, BC, V5Z 1L3, Canada
- BC Cancer, Vancouver, BC, Canada
- Department of Radiology, University of British Columbia, Vancouver, BC, Canada
| | - Arman Rahmim
- Department of Integrative Oncology, BC Cancer Research Institute, 675 West 10Th Avenue, Vancouver, BC, V5Z 1L3, Canada
- Department of Radiology, University of British Columbia, Vancouver, BC, Canada
- Departments of Physics and Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
- Department of Biomedical Engineering, University of British Columbia, Vancouver, Canada
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Sadowski EA, Lees B, McMillian AB, Kusmirek JE, Cho SY, Barroilhet LM. Distribution of prostate specific membrane antigen (PSMA) on PET-MRI in patients with and without ovarian cancer. Abdom Radiol (NY) 2023; 48:3643-3652. [PMID: 37261441 DOI: 10.1007/s00261-023-03957-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 06/02/2023]
Abstract
OBJECTIVES Ovarian cancer is the most lethal cancer and future research needs to focus on the early detection and exploration of new therapeutic agents. The objectives of this proof-of-concept study are to assess the feasibility of PSMA 18F-DCFPyl PET/MR imaging for detecting ovarian cancer and to evaluate the PSMA distribution in patients with and without ovarian cancer. METHODS This prospective pilot proof-of-concept study in patients with and without ovarian cancers occurred between October 2017 and January 2020. Patients were recruited from gynecologic oncology or hereditary ovarian cancer clinics, and underwent surgical removal of the uterus and ovaries for gynecologic indications. PSMA 18F-DCFPyl PET/MRI was obtained prior to standard of care surgery. RESULTS Fourteen patients were scanned: four patients with normal ovaries, six patients with benign ovarian lesions, and four patients with malignant ovarian lesions. Tracer uptake in normal ovaries (SUVmax = 2.8 ± 0.4) was greater than blood pool (SUVmax = 1.8 ± 0.5, p < 0.0001). Tracer uptake in benign ovarian lesions (2.2 ± 1.0) did not differ significantly from blood pool (p = 0.331). Tracer uptake in ovarian cancer (SUVmax = 7.8 ± 3.8) was greater than blood pool (p < 0.0001), normal ovaries (p = 0.0014), and benign ovarian lesions (p = 0.005). CONCLUSION PET/MR imaging detected PSMA uptake in ovarian cancer, with little to no uptake in benign ovarian findings. These results are encouraging and further studies in a larger patient cohort would be useful to help determine the extent and heterogeneity of PSMA uptake in ovarian cancer patients.
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Affiliation(s)
- Elizabeth A Sadowski
- Departments of Radiology, Obstetrics and Gynecology, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave, E3/372, Madison, WI, 53792-3252, USA.
| | - Brittany Lees
- Atrium Health Levine Cancer Institute, 1021 Morehead Medical Drive, Suite 2100, Charlotte, NC, 28204, USA
| | - Alan B McMillian
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 1111 Highland Avenue, Rm 1139, Madison, WI, 53705, USA
| | - Joanna E Kusmirek
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., E3/372, Madison, WI, 53792-3252, USA
| | - Steve Y Cho
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., E3/372, Madison, WI, 53792-3252, USA
| | - Lisa M Barroilhet
- Departments of Radiology, Obstetrics and Gynecology, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave, E3/372, Madison, WI, 53792-3252, USA
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Tie X, Shin M, Pirasteh A, Ibrahim N, Huemann Z, Castellino SM, Kelly KM, Garrett J, Hu J, Cho SY, Bradshaw TJ. Automatic Personalized Impression Generation for PET Reports Using Large Language Models. ArXiv 2023:arXiv:2309.10066v2. [PMID: 37904738 PMCID: PMC10614982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/01/2023]
Abstract
Purpose To determine if fine-tuned large language models (LLMs) can generate accurate, personalized impressions for whole-body PET reports. Materials and Methods Twelve language models were trained on a corpus of PET reports using the teacher-forcing algorithm, with the report findings as input and the clinical impressions as reference. An extra input token encodes the reading physician's identity, allowing models to learn physician-specific reporting styles. Our corpus comprised 37,370 retrospective PET reports collected from our institution between 2010 and 2022. To identify the best LLM, 30 evaluation metrics were benchmarked against quality scores from two nuclear medicine (NM) physicians, with the most aligned metrics selecting the model for expert evaluation. In a subset of data, model-generated impressions and original clinical impressions were assessed by three NM physicians according to 6 quality dimensions (3-point scale) and an overall utility score (5-point scale). Each physician reviewed 12 of their own reports and 12 reports from other physicians. Bootstrap resampling was used for statistical analysis. Results Of all evaluation metrics, domain-adapted BARTScore and PEGASUSScore showed the highest Spearman's ρ correlations (ρ=0.568 and 0.563) with physician preferences. Based on these metrics, the fine-tuned PEGASUS model was selected as the top LLM. When physicians reviewed PEGASUS-generated impressions in their own style, 89% were considered clinically acceptable, with a mean utility score of 4.08 out of 5. Physicians rated these personalized impressions as comparable in overall utility to the impressions dictated by other physicians (4.03, P=0.41). Conclusion Personalized impressions generated by PEGASUS were clinically useful, highlighting its potential to expedite PET reporting.
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Affiliation(s)
- Xin Tie
- Department of Radiology, University of Wisconsin, Madison, WI, USA
- Department of Medical Physics, University of Wisconsin, Madison, WI, USA
| | - Muheon Shin
- Department of Radiology, University of Wisconsin, Madison, WI, USA
| | - Ali Pirasteh
- Department of Radiology, University of Wisconsin, Madison, WI, USA
- Department of Medical Physics, University of Wisconsin, Madison, WI, USA
| | - Nevein Ibrahim
- Department of Radiology, University of Wisconsin, Madison, WI, USA
| | - Zachary Huemann
- Department of Radiology, University of Wisconsin, Madison, WI, USA
| | - Sharon M. Castellino
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
- Aflac Cancer and Blood Disorders Center, Children’s Healthcare of Atlanta, Atlanta, GA, USA
| | - Kara M. Kelly
- Department of Pediatric Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
- Department of Pediatrics, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY, USA
| | - John Garrett
- Department of Radiology, University of Wisconsin, Madison, WI, USA
- Department of Medical Physics, University of Wisconsin, Madison, WI, USA
| | - Junjie Hu
- Department of Biostatistics and Medical Informatics, University of Wisconsin, Madison, WI, USA
- Department of Computer Science, University of Wisconsin, Madison, WI, USA
| | - Steve Y. Cho
- Department of Radiology, University of Wisconsin, Madison, WI, USA
- University of Wisconsin Carbone Comprehensive Cancer Center, Madison, WI, USA
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Kim JY, Hyun DY, Nam D, Shin HJ, Jung J, Cho SY, Jung K, Hwang D, Lee SW, Kim JY. Proteogenomic Analysis of Human Uterine Cervical Cancer (UCC) Reveals Treatment-Resistant Subtypes of UCC. Int J Radiat Oncol Biol Phys 2023; 117:S22. [PMID: 37784455 DOI: 10.1016/j.ijrobp.2023.06.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Locally advanced uterine cervical cancer (UCC) is treated by radiotherapy with concurrent chemotherapy, but heterogenous treatment responses are frequently observed. To better optimize therapeutic options based on molecular signatures, we performed proteogenomic analysis of UCC. MATERIALS/METHODS UCC tissue and blood samples were collected from patients who underwent primary radiotherapy ± chemotherapy at the National Cancer Center (NCC) in Korea from July 2004 to March 2020. Most samples were obtained via biopsy. Genomic DNA for WES was isolated from frozen biopsy tumor tissues and peripheral blood buffy-coat of patients. Both global proteome and phosphoproteome were analyzed using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Whole exome sequencing, RNA sequencing, global proteomics and phosphoproteomics were performed using 253, 337, and 147 cervical cancer samples, respectively. Patient-derived xenograft were established using intratongue implantation using 2 primary cell lines from sub3 and sub5, and flow cytometric analysis was performed. RESULTS Fourteen significantly mutated genes (SMG) were found in our study cohort which include 5 newly identified SMGs. Mutation-phosphorylation analysis revealed association with apoptosis and actin cytoskeleton pathway. Proteogenomic analysis defined 6 molecular subtypes of UCC. Of those, 3 subtypes (i.e., Sub3, Sub5 and Sub6) were associated with treatment-resistant phenotypes. The cell-type deconvolution analysis suggested activated stroma with activation of cancer-associated fibroblast in Sub 3, while Sub5 showed low levels of activated stroma and high levels of myeloid immune cells. FACS analysis of UCC mouse models established from these 2 radio-resistant primary cell lines showed high component of PDGFRA+CAF infiltration in Sub 3, and high level of PVR+CD45+ immune cells mainly composed of polymorphonuclear myeloid-derived suppressor cells (PMN-MDSC) in Sub5. For Sub6, genes and/or protein signatures represented mucin-related processes (e.g., mucin glycosylation/sugar metabolism), which are linked to metastasis-associated Tn antigen production. CONCLUSION The proteogenomic analysis thus suggests potential targets for radiotherapy-resistant subtypes of UCC; secretory factors from activated stroma and cancer-associated fibroblast (Sub3); RHOA signaling, PVR, and PMN-MDSCs (Sub5), and keratin/chondroitin sulfate proteoglycan and Tn antigen production (Sub6). Our study shows the importance of proteogenomic analysis in unveiling the subtype specific molecular pathways of UCC that are beyond reach by genomic data alone. The validity of our molecular pathway and cellular signatures linking these pathways should be further validated through detailed functional experiments and in larger UCC cohorts.
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Affiliation(s)
- J Y Kim
- National Cancer Center, Goyang, Korea, Republic of (South) Korea
| | - D Y Hyun
- School of Biological Sciences, Seoul National University, Seoul, Korea, Republic of (South) Korea
| | - D Nam
- Department of Chemistry and Center for Proteogenome Research, Korea University, Seoul, Korea, Republic of (South) Korea
| | - H J Shin
- Research Institute and Hospital, National Cancer Center, Korea, Goyang, Korea, Republic of (South) Korea
| | - J Jung
- Department of Anatomy and Cell Biology and Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S Y Cho
- Research Institute and Hospital, National Cancer Center, Korea, Goyang-si, Korea, Republic of (South) Korea
| | - K Jung
- Department of Anatomy and Cell Biology and Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - D Hwang
- School of Biological Sciences, Seoul National University, Seoul, Korea, Republic of (South) Korea
| | - S W Lee
- Department of Chemistry and Center for Proteogenome Research, Korea University, Seoul, Korea, Republic of (South) Korea
| | - J Y Kim
- Research Institute and Hospital, National Cancer Center, Korea, Goyang-si, Korea, Republic of (South) Korea
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9
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Hoppe BS, Castellino S, Pei Q, Charpentier AM, Keller F, Vega RM, Roberts KB, Parikh RR, Punnett A, Parsons S, McCarten KM, Flampouri S, Kessel S, Wu Y, Cho SY, Kelly KM, Hodgson D. Radiotherapy Utilization and Outcomes on a Contemporary Trial for Pediatric High-Risk Hodgkin Lymphoma Study. Int J Radiat Oncol Biol Phys 2023; 117:S62-S63. [PMID: 37784541 DOI: 10.1016/j.ijrobp.2023.06.362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Contemporary trials in pediatric Hodgkin lymphoma (cHL) evaluate strategies to reduce radiotherapy (RT) utilization while maintaining excellent progression-free survival (PFS). An alternative strategy is to irradiate selective sites at higher risk of relapse, and/or use proton therapy (PT) to minimize exposure to healthy tissue. We investigated the use of PT and photon therapy (XRT) and associated early outcomes among patients receiving involved site RT (ISRT) to high-risk sites on the Children's Oncology Group (COG) trial AHOD1331 (NCT021664643). MATERIALS/METHODS This multicenter randomized, open-label phase 3 study enrolled patients 2-21 years (yrs) with previously untreated cHL: stages IIB + bulk, IIIB, IVA, IVB. Patients were randomized to 5 cycles of either ABVE-PC (doxorubicin, bleomycin, vincristine, etoposide, prednisone, cyclophosphamide) or the brentuximab vedotin (BV) containing regimen BV-AVE-PC given every 21 days. ISRT to 21 Gy was given to bulky mediastinal adenopathy and slow responding lesions (SRL) defined by 5-point score 4 or 5 on PET-CT after 2 cycles. ISRT could be delivered as 3D conformal XRT (3D), intensity modulated XRT (IMRT), or proton therapy (PT). Utilization of RT was compared by mode and by study enrollment midpoint among irradiated patients. Severe acute toxicity assessment included any incident grade 3 or higher toxicity during the ISRT period, except for neuropathy. RESULTS Among 587 eligible patients who were enrolled across 153 institutions between March 2015 and August 2019 with a median follow up of 43.1 months, the 3-yr PFS was 82.5% (90% CI, 78.3%-85.9%) with ABVE-PC and 92.5% (90% CI 89.5%-94.6%) with BV-AVE-PC (p = 0.0002). There was no difference in ISRT receipt or modality by study arm (p = 0.33). Among those who received RT 69.7% received it due to bulky mediastinal adenopathy, 6.6% due to SRL, and 23.7% for both. Overall, 317 (54.0%) patients received protocol RT of which 28.7% received 3D, 44.8% received IMRT, and 26.5% received PT. PT utilization increased over the course of the study from 21.5% among the first 50% of irradiated patients to 31.5% in the second half of irradiated patients (p = 0.045). The 3-yr progression-free survival rates overall by RT were comparable: PT (88.0%, 90% CI 80.6% - 92.7%%); XRT (87.1%, 90% CI 82.9%-90.4%) (p = 0.85). No difference in PFS was observed between 3D versus IMRT (p = 0.65). No differences were observed in severe acute toxicities (8.33% vs. 8.15%, p = 0.96) between PT and XRT. CONCLUSION Selective use of RT results in excellent outcomes for pediatric patients with high-risk HL and combination chemotherapy inclusive of the novel agent BV. Over the course of the study, PT utilization increased as an RT modality. Early results suggest that PT does not compromise disease control and has similar acute toxicity as XRT. Long term follow-up (>10 years) is needed to evaluate for secondary malignancies and cardiac toxicity among the different RT modalities.
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Affiliation(s)
- B S Hoppe
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL
| | | | - Q Pei
- University of Florida, Gainesville, FL
| | - A M Charpentier
- Centre hospitalier de l'Universite de Montreal, Montreal, QC, Canada
| | - F Keller
- Children Hospital of Atlanta, Atlanta, GA
| | | | | | - R R Parikh
- Rutgers Cancer Institute of New Jersey, Department of Radiation Oncology, New Brunswick, NJ
| | - A Punnett
- University of Toronto, Toronto, ON, Canada
| | | | | | - S Flampouri
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - S Kessel
- Imaging and Radiation Oncology Core, Lincoln, RI
| | - Y Wu
- University of Florida, Gainesville, FL
| | - S Y Cho
- Department of Radiology, University of Wisconsin Hospitals and Clinics, Madison, WI
| | - K M Kelly
- Roswell Park Cancer Institute, Buffalo, NY
| | - D Hodgson
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
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10
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Campbell G, Wells S, Huang W, Cooley GM, Jarrard D, Kyriakopoulos C, Cho SY, Lang J, Floberg JM. Disease and Toxicity Outcomes after Salvage Radiotherapy (SRT) for Biochemically Recurrent Prostate Cancer (PC) for Patients Enrolled in a Phase II, Open Label Trial Investigating Neoadjuvant Chemohormonal Therapy Followed by Radical Prostatectomy (RP). Int J Radiat Oncol Biol Phys 2023; 117:e369. [PMID: 37785259 DOI: 10.1016/j.ijrobp.2023.06.2466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Men with metastatic hormone sensitive prostate cancer have improved progression free and overall survival (PFS/OS) when treated with docetaxel and androgen deprivation therapy (ADT). Our institution conducted a phase II trial (UW17009) investigating the addition of three cycles of neoadjuvant docetaxel and ADT to RP in men with high-risk prostate cancer. Here we report toxicity and freedom from biochemical recurrence (FFBCR) for patients treated with SRT following participation in this trial. MATERIALS/METHODS Between January 17, 2018 and August 10, 2021, 28 patients enrolled on UW17009. Patients who had a recurrence and received SRT were identified. Toxicity was assessed using modified LENT (Late Effects of Normal Tissues)/RTOG (Radiation Therapy Oncology Group) criteria, and time to recurrence following SRT was determined for each patient. Additionally, the months of ADT received by each patient was recorded. FFBCR was then determined for this cohort using the method of Kaplan and Meier. RESULTS Of 28 patients enrolled on UW17009, 20 (71%) had BCR after RP. Of these, 19 received SRT, representing 68% of the patients enrolled on the trial. The rates of acute grade 1 and grade 2 GU toxicity with SRT were 37% (7) and 53% (10), respectively. The rates of acute grade 1 and grade 2 GI toxicity with SRT were 32% (6) and 37% (7), respectively. On patient experienced a grade 4 genitourinary toxicity during SRT. There were no acute grade 3 or grade 5 toxicities. The rates of late grade 1 and grade 2 GU toxicity were 16% (3) and 11% (2), respectively. The rates of late grade 1 and grade 2 GI toxicity were 11% (2) and 5% (1), respectively. There was 1 (5%) late grade 3 GU toxicity. There were no late grade 3-5 GI toxicities, or late grade 4-5 GU toxicities. The average duration of ADT after prostatectomy was 15 months (range: 0-37 months). According to the method of Kaplan and Meier, mean FFBCR after SRT was 34.0 months at a median of 37.8 months. Median FFBCR had not yet been reached. At the time of analysis, 13 patients remained free from biochemical recurrence after SRT. CONCLUSION Rates of biochemical recurrence and SRT following neoadjuvant docetaxel and ADT and then RP were consistent with historical data, as was the rate of successful SRT. Toxicities were also consistent with historical data, though there was notably one acute grade 4 GU toxicity.
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Affiliation(s)
- G Campbell
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - S Wells
- Department of Radiology, University of Wisconsin Hospitals & Clinics, Madison, WI
| | - W Huang
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - G M Cooley
- Department of Human Oncology, University of Wisconsin Hospital and Clinics, Madison, WI
| | - D Jarrard
- Department of Urology, University of Wisconsin Hospitals and Clinics, Madison, WI
| | - C Kyriakopoulos
- Department of Human Oncology, University of Wisconsin Hospital and Clinics, Madison, WI
| | - S Y Cho
- Department of Radiology, University of Wisconsin Hospitals and Clinics, Madison, WI
| | - J Lang
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - J M Floberg
- University of Wisconsin School of Medicine and Public Health, Madison, WI
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11
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Floberg JM, Wells SA, Ojala D, Bayliss RA, Hill PM, Morris BA, Morris ZS, Ritter M, Cho SY. Using 18F-DCFPyL Prostate-Specific Membrane Antigen-Directed Positron Emission Tomography/Magnetic Resonance Imaging to Define Intraprostatic Boosts for Prostate Stereotactic Body Radiation Therapy. Adv Radiat Oncol 2023; 8:101241. [PMID: 37250282 PMCID: PMC10209128 DOI: 10.1016/j.adro.2023.101241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 03/29/2023] [Indexed: 05/31/2023] Open
Abstract
Purpose The recently reported FLAME trial demonstrated a biochemical disease-free survival benefit to using a focal intraprostatic boost to multiparametric magnetic resonance imaging (mpMRI)-identified lesions in men with localized prostate cancer treated with definitive radiation therapy. Prostate-specific membrane antigen (PSMA)-directed positron emission tomography (PET) may identify additional areas of disease. In this work, we investigated using both PSMA PET and mpMRI in planning focal intraprostatic boosts using stereotactic body radiation therapy (SBRT). Methods and Materials We evaluated a cohort of patients (n = 13) with localized prostate cancer who were imaged with 2-(3-(1-carboxy-5-[(6-[18F]fluoro-pyridine-2-carbonyl)-amino]-pentyl)-ureido)-pentanedioic acid (18F-DCFPyL) PET/MRI on a prospective imaging trial before undergoing definitive therapy. The number of lesions concordant (overlapping) and discordant (no overlap) on PET and MRI was assessed. Overlap between concordant lesions was evaluated using the Dice and Jaccard similarity coefficients. Prostate SBRT plans were created fusing the PET/MRI imaging to computed tomography scans acquired the same day. Plans were created using only MRI-identified lesions, only PET-identified lesions, and the combined PET/MRI lesions. Coverage of the intraprostatic lesions and doses to the rectum and urethra were assessed for each of these plans. Results The majority of lesions (21/39, 53.8%) were discordant between MRI and PET, with more lesions seen by PET alone (12) than MRI alone (9). Of lesions that were concordant between PET and MRI, there were still areas that did not overlap between scans (average Dice coefficient, 0.34). Prostate SBRT planning using all lesions to define a focal intraprostatic boost provided the best coverage of all lesions without compromising constraints on the rectum and urethra. Conclusions Using both mpMRI and PSMA-directed PET may better identify all areas of gross disease within the prostate. Using both imaging modalities could improve the planning of focal intraprostatic boosts.
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Affiliation(s)
| | | | - Diane Ojala
- Radiation Oncology, UW Health, Madison, Wisconsin
| | | | | | | | | | | | - Steve Y. Cho
- Radiology, University of Wisconsin, Madison, Wisconsin
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12
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Lo AC, Lee I, Pei Q, Wu Y, McCarten KM, Hoppe BS, Hodgson DC, Roberts K, Milgrom S, Kessel S, Cole PD, Kelly KM, Cho SY. Prognostic value of chest x-ray- and CT-defined large mediastinal adenopathy in high-risk pediatric Hodgkin lymphoma: A report from the Children's Oncology Group Study AHOD0831. Pediatr Blood Cancer 2023; 70:e30452. [PMID: 37243975 PMCID: PMC10546608 DOI: 10.1002/pbc.30452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/26/2023] [Accepted: 05/11/2023] [Indexed: 05/29/2023]
Abstract
PURPOSE/OBJECTIVE We compared the prognostic value of chest radiograph (CXR)- and computed tomography (CT)-derived definition of large mediastinal adenopathy (LMA) in pediatric Hodgkin lymphoma (HL). MATERIALS/METHODS Total 143 patients treated for stage IIIB/IVB HL on COG AHOD0831 were included in this study. Six definitions of LMA were investigated: (i) mediastinal mass ratio on CXR (MRCXR ) > 1/3; (ii) mediastinal mass ratio on CT (MRCT ) > 1/3; (iii) mediastinal mass volume on CT (MVCT ) > 200 mL; (iv) normalized mediastinal mass volume (MVCT /thoracic diameter [TD]) > 1 mL/mm; (v) mediastinal mass diameter on CT (MDCT ) > 10 cm; and (vi) normalized mediastinal mass diameter (MDCT /TD) > 1/3. RESULTS Median age at diagnosis was 15.8 years (range: 5.2-21.3 years). In patients with a slow early response (SER) to chemotherapy, MVCT > 200 mL, MDCT > 10 cm, and MDCT /TD > 1/3 were associated with worse relapse-free survival (RFS) on MVA, while MRCXR > 1/3, MRCT > 1/3, and MVCT /TD > 1 mL/mm trended toward worse RFS; MDCT /TD was the most strongly prognostic for inferior RFS, with a hazard ratio of 6.41 for MDCT /TD > 1/3 versus ≤1/3 on MVA (p = .02). CONCLUSION LMA according to MVCT > 200 mL, MDCT > 10 cm, and MDCT /TD > 1/3 is associated with poor prognosis in advanced-stage HL patients with SER. The normalized mediastinal diameter, MDCT /TD > 1/3 appears to be the strongest predictor of inferior RFS.
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Affiliation(s)
- Andrea C. Lo
- Department of Radiation Oncology, BC Cancer Vancouver Centre, Vancouver, BC, Canada
- Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - Inki Lee
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI
- Department of Nuclear Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Qinglin Pei
- Children’s Oncology Group, Statistics and Data Center, Monrovia, CA, USA
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | - Yue Wu
- Children’s Oncology Group, Statistics and Data Center, Monrovia, CA, USA
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | | | | | - David C. Hodgson
- Radiation Oncology, Princess Margaret Cancer Center and University of Toronto, Toronto, Canada
| | - Kenneth Roberts
- Department of Radiation Oncology, Yale University School of Medicine, New Haven, CT, USA
| | - Sarah Milgrom
- Department of Radiation Oncology, University of Colorado, Aurora, CO
| | - Sandy Kessel
- Imaging and Radiation Oncology Core, Lincoln, RI, USA
| | - Peter D. Cole
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Kara M. Kelly
- Pediatric Hematology/Oncology, Roswell Park Comprehensive Cancer Center, University at Buffalo, Buffalo, NY, USA
| | - Steve Y. Cho
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI
- University of Wisconsin Carbone Cancer Center, Madison, WI, USA
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13
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Mhlanga J, Alazraki A, Cho SY, Lai H, Nadel H, Pandit-Taskar N, Qi J, Rajderkar D, Voss S, Watal P, McCarten K. Imaging recommendations in pediatric lymphoma: A COG Diagnostic Imaging Committee/SPR Oncology Committee White Paper. Pediatr Blood Cancer 2023; 70 Suppl 4:e29968. [PMID: 36114654 PMCID: PMC10641880 DOI: 10.1002/pbc.29968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 08/16/2022] [Indexed: 11/08/2022]
Abstract
Hodgkin lymphoma (HL) and non-Hodgkin lymphoma (NHL) are both malignancies originating in the lymphatic system and both affect children, but many features differ considerably, impacting workup and management. This paper provides consensus-based imaging recommendations for evaluation of patients with HL and NHL at diagnosis and response assessment for both interim and end of therapy (follow-up).
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Affiliation(s)
- Joyce Mhlanga
- Mallinckrodt Institute of Radiology, Washington University in St. Louis School of Medicine, Saint Louis, Missouri, USA
| | - Adina Alazraki
- Departments of Pediatrics and Radiology, Emory University School of Medicine, Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Steve Y Cho
- Department of Radiology, Nuclear Medicine and Molecular Imaging Section, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Hollie Lai
- Department of Radiology, Children's Health of Orange County, Orange, California, USA
| | - Helen Nadel
- Department of Pediatric Radiology, Lucile Packard Children's Hospital at Stanford, Stanford University School of Medicine, Stanford, California, USA
| | - Neeta Pandit-Taskar
- Department of Radiology, Molecular imaging and Therapy Service, Memorial Sloan Kettering Cancer Center, New York City, New York, USA
- Department of Radiology, Weill Cornell Medical College, New York City, New York, USA
| | - Jing Qi
- Department of Radiology, Medical College of Wisconsin and Children's Wisconsin, Milwaukee, Wisconsin, USA
| | - Dhanashree Rajderkar
- Department of Radiology, Division of Pediatric Radiology, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Stephan Voss
- Harvard Medical School, Department of Radiology, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Pankaj Watal
- University of Central Florida College of Medicine, Nemours Children's Hospital, Orlando, Florida, USA
| | - Kathleen McCarten
- Diagnostic Imaging and Pediatrics, Imaging and Radiation Oncology Core, Lincoln, Warren Alpert Medical School, Brown University, Providence, Rhode Island, USA
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14
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Milgrom SA, Kim J, Pei Q, Lee I, Hoppe BS, Wu Y, Hodgson D, Kessel S, McCarten KM, Roberts K, Lo AC, Cole PD, Kelly KM, Cho SY. Baseline metabolic tumour burden improves risk stratification in Hodgkin lymphoma: A Children's Oncology Group study. Br J Haematol 2023; 201:1192-1199. [PMID: 36922022 PMCID: PMC10247420 DOI: 10.1111/bjh.18734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/18/2023] [Accepted: 02/21/2023] [Indexed: 03/17/2023]
Abstract
The Children's Oncology Group AHOD0831 study used a positron emission tomography (PET) response-adapted approach in high-risk Hodgkin lymphoma, whereby slow early responders (SERs) received more intensive therapy than rapid early responders (RERs). We explored if baseline PET-based characteristics would improve risk stratification. Of 166 patients enrolled in the COG AHOD0831 study, 94 (57%) had baseline PET scans evaluable for quantitative analysis. For these patients, total body metabolic tumour volume (MTV), total lesion glycolysis (TLG), maximum standardized uptake value (SUVmax ) and peak SUV (SUVpeak ) were obtained. MTV/TLG thresholds were an SUV of 2.5 (MTV2.5 /TLG2.5 ) and 40% of the tumour SUVmax (MTV40% /TLG40% ). TLG2.5 was associated with event-free survival (EFS) in the complete cohort (p = 0.04) and in RERs (p = 0.01), but not in SERs (p = 0.8). The Youden index cut-off for TLG2.5 was 1841. Four-year EFS was 92% for RER/TLG2.5 up to 1841, 60% for RER/TLG2.5 greater than 1841, 74% for SER/TLG2.5 up to 1841 and 79% for SER/TLG2.5 greater than 1841. Second EFS for RER/TLG2.5 up to 1841 was 100%. Thus, RERs with a low baseline TLG2.5 experienced excellent EFS with less intensive therapy, whereas RERs with a high baseline TLG2.5 experienced poor EFS. These findings suggest that patients with a high upfront tumour burden may benefit from intensified therapy, even if they achieve a RER.
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Affiliation(s)
- Sarah A Milgrom
- Department of Radiation Oncology, University of Colorado, Aurora, Colorado, USA
| | - Jihyun Kim
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
- Division of Nuclear Medicine, Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Qinglin Pei
- Children's Oncology Group, Statistics and Data Center, Department of Biostatistics, University of Florida, Gainesville, Florida, USA
| | - Inki Lee
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
- Department of Nuclear Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| | - Bradford S Hoppe
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, Florida, USA
| | - Yue Wu
- Children's Oncology Group, Statistics and Data Center, Department of Biostatistics, University of Florida, Gainesville, Florida, USA
| | | | - Sandy Kessel
- Imaging and Radiation Oncology Core, Lincoln, Rhode Island, USA
| | | | - Kenneth Roberts
- Yale University School of Medicine, New Haven, Connecticut, USA
| | - Andrea C Lo
- BC Cancer Agency, Vancouver, British Columbia, Canada
| | - Peter D Cole
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - Kara M Kelly
- Pediatric Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Steve Y Cho
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
- University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
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15
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Oh C, Bishop MW, Cho SY, Im HJ, Shulkin BL. 18F-FDG PET/CT in the Management of Osteosarcoma. J Nucl Med 2023:jnumed.123.265592. [PMID: 37201958 DOI: 10.2967/jnumed.123.265592] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/26/2023] [Indexed: 05/20/2023] Open
Abstract
Osteosarcoma is the most common type of primary malignant bone tumor. 18F-FDG PET/CT is useful for staging, detecting recurrence, monitoring response to neoadjuvant chemotherapy, and predicting prognosis. Here, we review the clinical aspects of osteosarcoma management and assess the role of 18F-FDG PET/CT, in particular with regard to pediatric and young adult patients.
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Affiliation(s)
- Chiwoo Oh
- Department of Applied Bioengineering, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Republic of Korea
| | - Michael W Bishop
- Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Steve Y Cho
- Nuclear Medicine and Molecular Imaging Section, Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Hyung-Jun Im
- Department of Applied Bioengineering, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Republic of Korea;
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Republic of Korea
- Cancer Research Institute, Seoul National University, Seoul, Republic of Korea; and
| | - Barry L Shulkin
- Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, Tennessee
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16
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Fendler WP, Eiber M, Beheshti M, Bomanji J, Calais J, Ceci F, Cho SY, Fanti S, Giesel FL, Goffin K, Haberkorn U, Jacene H, Koo PJ, Kopka K, Krause BJ, Lindenberg L, Marcus C, Mottaghy FM, Oprea-Lager DE, Osborne JR, Piert M, Rowe SP, Schöder H, Wan S, Wester HJ, Hope TA, Herrmann K. PSMA PET/CT: joint EANM procedure guideline/SNMMI procedure standard for prostate cancer imaging 2.0. Eur J Nucl Med Mol Imaging 2023; 50:1466-1486. [PMID: 36604326 PMCID: PMC10027805 DOI: 10.1007/s00259-022-06089-w] [Citation(s) in RCA: 51] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 12/18/2022] [Indexed: 01/07/2023]
Abstract
Here we aim to provide updated guidance and standards for the indication, acquisition, and interpretation of PSMA PET/CT for prostate cancer imaging. Procedures and characteristics are reported for a variety of available PSMA small radioligands. Different scenarios for the clinical use of PSMA-ligand PET/CT are discussed. This document provides clinicians and technicians with the best available evidence, to support the implementation of PSMA PET/CT imaging in research and routine practice.
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Affiliation(s)
- Wolfgang P Fendler
- Department of Nuclear Medicine, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, Hufelandstraße 55, 45147, Essen, Germany
- PET Committee of the German Society of Nuclear Medicine, Marburg, Germany
| | - Matthias Eiber
- Department of Nuclear Medicine, Klinikum Rechts Der Isar, Technical University of Munich, Munich, Germany
| | - Mohsen Beheshti
- Division of Molecular Imaging & Theranostics, Department of Nuclear Medicine, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - Jamshed Bomanji
- Institute of Nuclear Medicine, UCLH NHS Foundation Trust, London, UK
| | - Jeremie Calais
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, University of California Los Angeles, Los Angeles, CA, USA
| | - Francesco Ceci
- Division of Nuclear Medicine and Theranostics, IEO European Institute of Oncology, IRCCS, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
| | - Steve Y Cho
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
| | | | - Frederik L Giesel
- Department of Nuclear Medicine, University Hospital Düsseldorf, Medical Faculty, Heinrich-Heine-University and Department of Nuclear Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Karolien Goffin
- Department of Nuclear Medicine, Division of Nuclear Medicine and Molecular Imaging, University Hospital Leuven, KU Leuven, Louvain, Belgium
| | - Uwe Haberkorn
- Department of Nuclear Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Heather Jacene
- Dana-Farber Cancer Institute/Brigham and Women's Hospital, Boston, USA
| | | | - Klaus Kopka
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
- School of Science, Faculty of Chemistry and Food Chemistry, Technical University Dresden, Dresden, Germany
- German Cancer Consortium (DKTK), Partner Site Dresden, Dresden, Germany
| | - Bernd J Krause
- Department of Nuclear Medicine, University Medical Center, University of Rostock, Rostock, Germany
| | - Liza Lindenberg
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Charles Marcus
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Emory University School of Medicine, Atlanta, GA, USA
| | - Felix M Mottaghy
- Department of Nuclear Medicine, University Hospital RWTH Aachen University, Aachen, Germany
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
| | - Daniela E Oprea-Lager
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Centers, VU University Medical Center, Cancer Center Amsterdam, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands
| | - Joseph R Osborne
- Department of Radiology, Division of Molecular Imaging and Therapeutics, Weill Cornell Medicine, New York, NY, USA
| | - Morand Piert
- Department of Radiology, Division of Nuclear Medicine and Molecular Imaging, University of Michigan, Ann Arbor, MI, USA
| | - Steven P Rowe
- Division of Nuclear Medicine and Molecular Imaging, The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Heiko Schöder
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Simon Wan
- Institute of Nuclear Medicine, UCLH NHS Foundation Trust, London, UK
| | - Hans-Jürgen Wester
- Pharmaceutical Radiochemistry, Technische Universität München, Walther-Meißner-Str. 3, 85748, Garching, Germany
| | - Thomas A Hope
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Ken Herrmann
- Department of Nuclear Medicine, University of Duisburg-Essen and German Cancer Consortium (DKTK)-University Hospital Essen, Hufelandstraße 55, 45147, Essen, Germany.
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Hoppe BS, McCarten KM, Pei Q, Kessel S, Alazraki A, Mhlanga JC, Lai HA, Eutsler E, Hodgson DC, Roberts KB, Charpentier AM, Keller FG, Voss SD, Wu Y, Cho SY, Kelly KM, Castellino SM. Importance of Central Imaging Review in a Pediatric Hodgkin Lymphoma Trial Using PET Response-Adapted Radiotherapy. Int J Radiat Oncol Biol Phys 2023:S0360-3016(23)00164-5. [PMID: 36868525 PMCID: PMC10363760 DOI: 10.1016/j.ijrobp.2023.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 03/05/2023]
Abstract
PURPOSE We investigated the impact of central review of the interim fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) scan response (iPET) assessment on treatment allocation on the risk-based, response-adapted, Children's Oncology Group study AHOD1331 (ClinicalTrials.gov: NCT02166463) for pediatric patients with high-risk Hodgkin lymphoma. METHODS AND MATERIALS Per protocol, after 2 cycles of systemic therapy, patients underwent iPET, with visual response assessment by 5-point Deauville score (DS) at their treating institution and a real-time central review, with the latter considered the reference standard. An area of disease with a DS of 1 to 3 was considered a rapid-responding lesion (RRL), whereas a DS of 4 to 5 was considered a slow-responding lesion (SRL). Patients with 1 or more SRLs were considered iPET positive, whereas patients with only RRLs were considered iPET negative. We conducted a predefined exploratory evaluation of concordance in iPET response assessment between institutional and central reviews of 573 patients. The concordance rate was evaluated by using the Cohen kappa statistic (κ; a κ >0.80 was considered very good agreement; >0.60-0.80, good agreement). RESULTS The concordance rate (514/573 [89.7%]) had a κ of 0.685 (95% CI, 0.610-0.759), consistent with "good" agreement. In terms of the direction of discordance, among the 126 patients who were considered iPET positive by institutional review, 38 (30.2%) were categorized as iPET negative by central review, preventing overtreatment with radiotherapy. Conversely, among the 447 patients who were considered iPET negative by institutional review, 21 patients (4.7%) were categorized as iPET positive by the central review and would have been undertreated without radiotherapy. CONCLUSIONS Central review is integral to PET response-adapted clinical trials for children with Hodgkin lymphoma. Continued support of central imaging review and education on DS is needed.
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Affiliation(s)
- Bradford S Hoppe
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida.
| | - Kathleen M McCarten
- Pediatric Radiology, Imaging and Radiation Oncology Core Rhode Island, Lincoln, Rhode Island
| | - Qinglin Pei
- Children's Oncology Group Statistics and Data Center, Department of Biostatistics, University of Florida, Gainesville, Florida
| | - Sandy Kessel
- Pediatric Radiology, Imaging and Radiation Oncology Core Rhode Island, Lincoln, Rhode Island
| | - Adina Alazraki
- Department of Radiology and Imaging Sciences, Emory University and Children's Healthcare of Atlanta-Egleston Hospital, Decatur, Georgia
| | - Joyce C Mhlanga
- Mallinckrodt Institute of Radiology, Washington University, St. Louis, Missouri
| | - Hollie A Lai
- Department of Radiology, Children's Health of Orange County, Orange, California
| | - Eric Eutsler
- Department of Radiology, Progressive Physician Associates, Bethlehem, Pennsylvania
| | - David C Hodgson
- Department of Radiation Oncology, Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada
| | - Kenneth B Roberts
- Department of Therapeutic Radiology, Yale University, New Haven, Connecticut
| | - Anne-Marie Charpentier
- Department of Radiation Oncology, Centre hospitalier de l'Universite de Montreal, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada
| | - Frank G Keller
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Atlanta, Georgia
| | - Stephan D Voss
- Department of Radiology, Dana-Farber Cancer Institute, Boston Children's Hospital, Boston, Massachusetts
| | - Yue Wu
- Children's Oncology Group Statistics and Data Center, Department of Biostatistics, University of Florida, Gainesville, Florida
| | - Steve Y Cho
- Department of Radiology, Wisconsin Institutes for Medical Research, University of Wisconsin, Madison, Wisconsin
| | - Kara M Kelly
- Department of Pediatrics, Roswell Park Comprehensive Cancer Center, University at Buffalo, Buffalo, New York
| | - Sharon M Castellino
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Atlanta, Georgia
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Vapiwala N, Chen YH, Cho SY, Duan F, Kyriakopoulos C, Morgans AK, Shevrin DH, Koontz BF, McKay RR, Yu EY, McConathy J, Liu G, Mankoff DA, Wong TZ, Carducci MA. Phase III study of local or systemic therapy intensification directed by PET in prostate cancer patients with post-prostatectomy biochemical recurrence (INDICATE): ECOG-ACRIN EA8191. J Clin Oncol 2023. [DOI: 10.1200/jco.2023.41.6_suppl.tps402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023] Open
Abstract
TPS402 Background: Salvage radiation therapy (sRT) to the prostate bed and pelvic nodes with short-term androgen deprivation therapy (STAD) is considered a standard of care (SOC) salvage therapy (ST) paradigm for prostate cancer (PC) patients (pts) with post-prostatectomy (RP) biochemical recurrence (BCR). PET imaging with recently FDA-approved agents in this setting (18F-Fluciclovine, 18F-DCFPyL and 68Ga-PSMA-11), have shown improved accuracy for detection of metastases not identified with conventional imaging (CIM). Given the greater sensitivity and specificity of PET, its findings are being increasingly but variably applied to justify modification or omission of SOC therapies without high-level evidence of clinical benefit. PET may help identify candidates for different treatment intensification approaches. In metastatic prostate cancer, metastasis-directed RT (MDT) has been used to avoid or delay systemic therapy in men with oligometastatic disease. Apalutamide (Apa) is an androgen receptor signaling inhibitor that has been shown to improve outcomes when added to ADT in mCSPC. This study will evaluate whether patients with PET-detected lesions outside the pelvis will benefit from addition of MDT to treatment intensification with STAD/Apa, and whether patients with no PET-detected lesions outside the pelvis will benefit from addition of Apa to standard sRT/STAD. Methods: PC pts with post-RP BCR (PSA>0.5ng/mL; >0.2ng/mL if first detectable within 12 mos of RP) and no extrapelvic metastases on CIM who are candidates for SOC ST (sRT to prostate bed and pelvic nodes with STAD) are eligible. Pts will undergo SOC baseline PET using a FDA-approved tracer. Based on institutional clinical interpretation of the SOC PET, pts will be placed in Cohort 1 (PET-negative) or 2 (PET-positive for extra-pelvic metastases). Cohort 1 will be randomized to SOC ST +/- Apa for 6 months and Cohort 2 will be randomized to SOC ST and Apa +/- MDT to PET-positive lesions. The primary endpoint is PFS, defined as time from randomization to radiographic progression on CIM, symptomatic disease or death, whichever occurs first. Primary objectives are to evaluate whether addition of Apa to SOC ST and addition of MDT to SOC ST and Apa could prolong PFS in Cohorts 1 and 2, respectively. For Cohort 1, 480 pts will be randomized with 85% power to distinguish a 5-year PFS rate of 90% (Apa arm) vs. 80% (SOC arm) using one-sided stratified logrank test with type I error of 0.025. For Cohort 2, 324 pts will be randomized with 85% power to distinguish a 5-year PFS rate of 76.5% in the experimental arm from 61.5% in the control arm. Secondary endpoints include overall and event-free survival, toxicity, PET progression and quality of life. Clinical trial information: NCT04423211 .
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Affiliation(s)
| | | | - Steve Y. Cho
- University of Wisconsin SMPH, Department of Radiology, University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Fenghai Duan
- Brown University School of Public Health, Providence, RI
| | | | | | | | | | - Rana R. McKay
- Moores Cancer Center, University of California San Diego, La Jolla, CA
| | - Evan Y. Yu
- University of Washington School of Medicine, Seattle, WA
| | | | - Glenn Liu
- University of Wisconsin-Madison Carbone Cancer Center, Madison, WI
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Lawrence EM, Kieler M, Cooley G, Wells SA, Cho SY. Assessment of 18F-DCFPyL PSMA PET/CT and PET/MR quantitative parameters for reference standard organs: Inter-reader, inter-modality, and inter-patient variability. PLoS One 2023; 18:e0283830. [PMID: 37023049 PMCID: PMC10079029 DOI: 10.1371/journal.pone.0283830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 03/17/2023] [Indexed: 04/07/2023] Open
Abstract
Prostate specific membrane antigen (PSMA)-based radiotracers have shown promise for prostate cancer assessment. Evaluation of quantitative variability and establishment of reference standards are important for optimal clinical and research utility. This work evaluates the variability of PSMA-based [18F]DCFPyL (PyL) PET quantitative reference standards. Consecutive eligible patients with biochemically recurrent prostate cancer were recruited for study participation from August 2016-October 2017. After PyL tracer injection, whole body PET/CT (wbPET/CT) was obtained with subsequent whole body PET/MR (wbPET/MR). Two readers independently created regions of interest (ROIs) including a 40% standardized uptake value (SUV) threshold ROI of the whole right parotid gland and separate spherical ROIs in the superior, mid, and inferior gland. Additional liver (right lobe) and blood pool spherical ROIs were defined. Bland-Altman analysis, including limits of agreement (LOA), as well as interquartile range (IQR) and coefficient of variance (CoV) was used. Twelve patients with prostate cancer were recruited (mean age, 61.8 yrs; range 54-72 years). One patient did not have wbPET/MR and was excluded. There was minimal inter-reader SUVmean variability (bias±LOA) for blood pool (-0.13±0.42; 0.01±0.41), liver (-0.55±0.82; -0.22±1.3), or whole parotid gland (-0.05±0.31; 0.08±0.24) for wbPET/CT and wbPET/MR, respectively. Greater inter-reader variability for the 1-cm parotid gland ROIs was present, for both wbPET/CT and wbPET/MR. Comparing wbPET/CT to the subsequently acquired wbPET/MR, blood pool had a slight decrease in SUVmean. The liver as well as parotid gland showed a slight increase in activity although the absolute bias only ranged from 0.45-1.28. The magnitude of inter-subject variability was higher for the parotid gland regardless of modality or reader. In conclusion, liver, blood pool, and whole parotid gland quantitation show promise as reliable reference normal organs for clinical/research PET applications. Variability with 1-cm parotid ROIs may limit its use.
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Affiliation(s)
- Edward M Lawrence
- Department of Radiology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Minnie Kieler
- Department of Radiology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Greg Cooley
- Department of Human Oncology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Shane A Wells
- Department of Radiology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Steve Y Cho
- Department of Radiology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
- Carbone Cancer Center, Madison, Wisconsin, United States of America
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20
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Castellino SM, Pei Q, Parsons SK, Hodgson DC, McCarten K, Punnett A, Horton TM, Dave HK, Cho SY, Wu Y, Henderson TO, Hoppe B, Keller FG, Kelly K. Brentuximab vedotin and association with event-free survival (EFS) in children with newly diagnosed high-risk Hodgkin lymphoma (HL): A report from the Children's Oncology Group phase 3 study AHOD1331 (NCT 02166463). J Clin Oncol 2022. [DOI: 10.1200/jco.2022.40.16_suppl.7504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
7504 Background: The anti-CD30 antibody drug conjugate, Brentuximab vedotin (Bv) is approved for adults with advanced stage HL but its use has not been established in children or adolescents. We compared the efficacy and safety of Bv with doxorubicin, vincristine, etoposide, prednisone and cyclophosphamide (Bv-AVE-PC) to the standard pediatric dose intensive regimen ABVE-PC, inclusive of bleomycin. Methods: This multicenter randomized, open-label phase 3 study enrolled patients 2-21 years (yrs) with previously untreated HL, stages IIB + bulk, IIIB, IVA, IVB. Patients were randomized to 5 cycles of either ABVE-PC or Bv-AVE-PC given every 21 days with granulocyte colony-stimulating factor support. Centrally reviewed PET-CT after 2 cycles (PET2) identified slow responding lesions (SRL) defined as Deauville score > 3. Involved site radiotherapy (ISRT) was given to bulky mediastinal adenopathy and SRL. The primary objective was 3-year EFS; events include relapse/progression, second malignant neoplasm (SMN) or death. Final data cutoff was 31 December 2021. Results: 600 participants were enrolled across 151 institutions from March 2015 to August 2019; 587 were eligible. Median age was 15.6 yrs (range 3.4-21). Patient and disease characteristics were balanced across study arms. Histology was nodular sclerosing in 76.5%. Stage distribution: 20.6% IIB-bulk; 19.3% IIIB; 28.5% IVA; 31.7% IVB. At a median follow-up of 42.1 mos (0.1-80.9), 3-year EFS (95%CI) by intent-to-treat analyses was 82.5% (77.4, 86.5) with ABVE-PC and 92.1% (88.4, 94.7) with Bv-AVE-PC (HR 0.41 (0.25, 0.67), p = 0.0002). Median time to 1st event was 9.4 months for both arms but the range differs by arm (3.6-57.8 ABVE-PC; 1.3, 25.8 Bv-AVE-PC). Relapse rate was 17% following ABVE-PC and 7% with Bv-AVE-PC. One SMN is noted in each arm: thyroid cancer at 57.8 mos and acute myeloid leukemia at 20.3 mos. 3-year overall survival (95%CI) was 98.5% (96.0, 99.4) for ABVE-PC and 99.3% (97.3, 99.8) for Bv-AVE-PC (p = 0.38). PET2 SRL rates were comparable (ABVE-PC 19% vs. Bv-AVE-PC 18%, p = 0.8). As-treated ISRT receipt did not differ (ABVE-PC 55.7% vs. Bv-AVE-PC 52.7%, p = 0.69). No difference in grade 3/4 adverse events was observed; myelosuppression, reflected in a 32% incidence of > grade 3 febrile neutropenia, did not differ by arm (p = 0.67). Only 19% of patients experienced > grade 2 neuropathy by the Balis pediatric neuropathy scale, with no difference between arms (p = 0.86). Conclusions: Brentuximab vedotin with AVE-PC in a dose intensive regimen has superior efficacy to ABVE-PC for pediatric patients with high-risk HL. A 59% risk reduction in EFS was achieved with no increase in toxicity and with fewer patients receiving ISRT compared to prior pediatric trials for high-risk HL. Clinical trial information: 02166463.
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Affiliation(s)
| | | | | | - David C. Hodgson
- Princess Margaret - University Health Network, Toronto, ON, Canada
| | | | | | | | | | - Steve Y. Cho
- University of Wisconsin SMPH, Department of Radiology, University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Yue Wu
- Children's Oncology Group, Gainesville, FL
| | | | | | - Frank G. Keller
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta and Emory University, Atlanta, GA
| | - Kara Kelly
- Roswell Park Comprehensive Cancer Center, Buffalo, NY
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21
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Parikh RR, Kelly KM, Hodgson DC, Hoppe BS, McCarten KM, Karolczuk K, Pei Q, Wu Y, Cho SY, Schwartz C, Cole PD, Roberts K. Patterns of Initial Relapse from a Phase 3 Study of Response-Based Therapy for High-Risk Hodgkin Lymphoma (AHOD0831): A Report from the Children's Oncology Group. Int J Radiat Oncol Biol Phys 2022; 112:890-900. [PMID: 34767937 PMCID: PMC9038118 DOI: 10.1016/j.ijrobp.2021.10.152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/28/2021] [Accepted: 10/28/2021] [Indexed: 12/26/2022]
Abstract
PURPOSE The Children's Oncology Group protocol AHOD0831, for pediatric patients with high-risk classical Hodgkin lymphoma (cHL), used response-adapted radiation fields, rather than larger involved-field radiation therapy (IFRT) that were historically used. This retrospective analysis of patterns of relapse among patients enrolled in the study was conducted to study the potential effect of a reduction in RT exposure. METHODS AND MATERIALS From December 2009 to January 2012, 164 eligible patients under 22 years old with stage IIIB (43%) and stage IVB (57%) enrolled on AHOD0831. All patients received 4 cycles of doxorubicin, bleomycin, vincristine, etoposide, prednisone, and cyclophosphamide (ABVE-PC). Those patients with a slow early response (SER) after the first 2 ABVE-PC courses were nonrandomly assigned to 2 intensification cycles with ifosfamide/vinorelbine before the final 2 ABVE-PC cycles. Response-adapted RT (21 Gy) was prescribed to initial areas of bulky disease and SER sites. Rapid early response (RER) sites without bulk were not targeted. Imaging studies at the time of progression or relapse were reviewed centrally for this retrospective analysis. Relapses were characterized with respect to site (initial, new, or both; and initial bulk or initial nonbulk), initial chemotherapy response, and radiation field (in-field, out-of-field, or both). RESULTS Of the entire cohort, 140 patients were evaluable for the patterns of failure analyses. To investigate the pattern of failure, this analysis focuses on 23 patients who followed protocol treatment and suffered relapses at a median 1.05 years with 7.97-year median follow-up time. These 23 patients (11 RER and 12 SER) experienced a relapse in 105 total sites (median, 4; range, 1-11). Of the 105 relapsed sites, 67 sites (64%) occurred within an initial site of involvement, with 12 of these 67 sites (18%) at an initial site of bulky disease and 63 of these 67 relapses (94%) occurring in sites that were not fluorodeoxyglucose (FDG)-avid after 2 cycles of ABVE-PC (PET2-negative). Of the 105 relapsed sites, 34 sites (32%) occurred in a new site of disease (that would not have been covered by RT); and, overall, only 4 of 140 patients (2.8%) (occurring in 3 RER and 1 SER) experienced isolated out-of-field relapses that would have been covered by historical IFRT. CONCLUSIONS For a cohort of high-risk patients with cHL patients, most failures occurred in nonbulky, initially involved sites, largely due to response-based consolidation RT delivered to patients with bulky disease. In this analysis, we discovered low rates of failures outside of these modern risk-adapted radiation treatment volumes. Also, FDG uptake on PET2 did not identify most relapse sites.
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Affiliation(s)
- Rahul R Parikh
- Rutgers Cancer Institute of New Jersey, Department of Radiation Oncology, New Brunswick, New Jersey.
| | - Kara M Kelly
- Department of Pediatric Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - David C Hodgson
- Department of Radiation Oncology, University of Toronto, Princess Margaret Hospital, Toronto, Ontario, Canada
| | - Bradford S Hoppe
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida
| | - Kathleen M McCarten
- Imaging and Radiation Oncology Core Group Rhode Island (IROC-RI). Lincoln, Rhode Island
| | - Katie Karolczuk
- Imaging and Radiation Oncology Core Group Rhode Island (IROC-RI). Lincoln, Rhode Island
| | - Qinglin Pei
- Department of Biostatistics, University of Florida, Children's Oncology Group, Statistics and Data Center, Gainesville, Florida
| | - Yue Wu
- Department of Biostatistics, University of Florida, Children's Oncology Group, Statistics and Data Center, Gainesville, Florida
| | - Steve Y Cho
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, University of Wisconsin Carbone Cancer Center, Madison, Wisconsin
| | - Cindy Schwartz
- Division of Pediatric Hematology, Oncology and BMT, Medical College of Wisconsin Milwaukee, Wisconsin
| | - Peter D Cole
- Division of Pediatric Hematology/Oncology, Robert Wood Johnson Medical School, Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
| | - Kenneth Roberts
- Department of Therapeutic Radiology, Yale University, New Haven, Connecticut
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22
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Teachey DT, Devidas M, Wood BL, Chen Z, Hayashi RJ, Hermiston ML, Annett RD, Archer JH, Asselin BL, August KJ, Cho SY, Dunsmore KP, Fisher BT, Freedman JL, Galardy PJ, Harker-Murray P, Horton TM, Jaju AI, Lam A, Messinger YH, Miles RR, Okada M, Patel SI, Schafer ES, Schechter T, Singh N, Steele AC, Sulis ML, Vargas SL, Winter SS, Wood C, Zweidler-McKay P, Bollard CM, Loh ML, Hunger SP, Raetz EA. Children's Oncology Group Trial AALL1231: A Phase III Clinical Trial Testing Bortezomib in Newly Diagnosed T-Cell Acute Lymphoblastic Leukemia and Lymphoma. J Clin Oncol 2022; 40:2106-2118. [PMID: 35271306 PMCID: PMC9242409 DOI: 10.1200/jco.21.02678] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
PURPOSE To improve the outcomes of patients with T-cell acute lymphoblastic leukemia (T-ALL) and lymphoblastic lymphoma (T-LL), the proteasome inhibitor bortezomib was examined in the Children's Oncology Group phase III clinical trial AALL1231, which also attempted to reduce the use of prophylactic cranial radiation (CRT) in newly diagnosed T-ALL. PATIENTS AND METHODS Children and young adults with T-ALL/T-LL were randomly assigned to a modified augmented Berlin-Frankfurt-Münster chemotherapy regimen with/without bortezomib during induction and delayed intensification. Multiple modifications were made to the augmented Berlin-Frankfurt-Münster backbone used in the predecessor trial, AALL0434, including using dexamethasone instead of prednisone and adding two extra doses of pegaspargase in an attempt to eliminate CRT in most patients. RESULTS AALL1231 accrued 824 eligible and evaluable patients from 2014 to 2017. The 4-year event-free survival (EFS) and overall survival (OS) for arm A (no bortezomib) versus arm B (bortezomib) were 80.1% ± 2.3% versus 83.8% ± 2.1% (EFS, P = .131) and 85.7% ± 2.0% versus 88.3% ± 1.8% (OS, P = .085). Patients with T-LL had improved EFS and OS with bortezomib: 4-year EFS (76.5% ± 5.1% v 86.4% ± 4.0%; P = .041); and 4-year OS (78.3% ± 4.9% v 89.5% ± 3.6%; P = .009). No excess toxicity was seen with bortezomib. In AALL0434, 90.8% of patients with T-ALL received CRT. In AALL1231, 9.5% of patients were scheduled to receive CRT. Evaluation of comparable AALL0434 patients who received CRT and AALL1231 patients who did not receive CRT demonstrated no statistical differences in EFS (P = .412) and OS (P = .600). CONCLUSION Patients with T-LL had significantly improved EFS and OS with bortezomib on the AALL1231 backbone. Systemic therapy intensification allowed elimination of CRT in more than 90% of patients with T-ALL without excess relapse.
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Affiliation(s)
- David T Teachey
- Department of Pediatrics and the Center for Childhood Cancer Research, Children's Hospital of Philadelphia and The Perelman School of Medicine at The University of Pennsylvania, Philadelphia, PA
| | - Meenakshi Devidas
- Department of Global Pediatric Medicine, St Jude Children's Research Hospital, Memphis, TN
| | - Brent L Wood
- Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Zhiguo Chen
- Department of Biostatistics, University of Florida, Gainesville, FL
| | - Robert J Hayashi
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Washington University School of Medicine, St Louis Children's Hospital, St Louis, MO
| | - Michelle L Hermiston
- Department of Pediatrics, Benioff Children's Hospital and the Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Robert D Annett
- Department of Pediatrics, University of New Mexico Health Sciences Center, Albuquerque, NM
| | - J Hunter Archer
- Department of Biostatistics, University of Florida, Gainesville, FL
| | - Barbara L Asselin
- Department of Pediatrics and Wilmot Cancer Institute at URMC, University of Rochester School of Medicine and Dentistry, Rochester, NY
| | | | - Steve Y Cho
- University of Wisconsin-Madison and the University of Wisconsin Carbone Cancer Center, Madison, WI
| | | | - Brian T Fisher
- Department of Pediatrics and the Center for Childhood Cancer Research, Children's Hospital of Philadelphia and The Perelman School of Medicine at The University of Pennsylvania, Philadelphia, PA
| | - Jason L Freedman
- Department of Pediatrics and the Center for Childhood Cancer Research, Children's Hospital of Philadelphia and The Perelman School of Medicine at The University of Pennsylvania, Philadelphia, PA
| | - Paul J Galardy
- Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN
| | | | - Terzah M Horton
- Texas Children's Hospital, Baylor College of Medicine, Houston, TX
| | | | - Allison Lam
- Miller Children's and Women's Hospital, Long Beach, CA
| | | | - Rodney R Miles
- Department of Pathology and ARUP Institute for Clinical & Experimental Pathology, University of Utah, Salt Lake City, UT
| | - Maki Okada
- Miller Children's and Women's Hospital, Long Beach, CA
| | - Samir I Patel
- Division of Radiation Oncology, Department of Oncology, University of Alberta, Stollery Children's Hospital, Edmonton, AB, Canada
| | - Eric S Schafer
- Texas Children's Hospital, Baylor College of Medicine, Houston, TX
| | - Tal Schechter
- Haematology/Oncology, Child Health Evaluative Services (CHES) Program Research Institute, The Hospital for Sick Children, Toronto, Canada
| | - Neelam Singh
- Michigan State University Clinical Center, Lansing, MI
| | - Amii C Steele
- Carolinas Medical Center/Levine Cancer Institute, Charlotte, NC
| | - Maria Luisa Sulis
- Department of Pediatric Oncology, Memorial Sloan Kettering Cancer Center, New York, NY
| | | | - Stuart S Winter
- Children's Minnesota Research Institute, Children's Minnesota Research Institute and Cancer and Blood Disorders Program, Minneapolis, MN
| | - Charlotte Wood
- Department of Biostatistics, University of Florida, Gainesville, FL
| | | | | | - Mignon L Loh
- Department of Pediatrics, Benioff Children's Hospital and the Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Stephen P Hunger
- Department of Pediatrics and the Center for Childhood Cancer Research, Children's Hospital of Philadelphia and The Perelman School of Medicine at The University of Pennsylvania, Philadelphia, PA
| | - Elizabeth A Raetz
- Division of Pediatric Hematology and Oncology, Department of Pediatrics, New York University Langone Health, New York, NY
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Torres-Velázquez M, Parker M, Bo A, White M, Tanabe S, Pearce RA, Lennertz R, Cho SY, Bendlin B, Johnson SC, Prabhakaran V, McMillan AB, Sanders RD. Amyloid deposition on positron emission tomography correlates with severity of perioperative delirium: a case-control pilot study. Br J Anaesth 2022; 128:e226-e228. [PMID: 34996589 PMCID: PMC8988176 DOI: 10.1016/j.bja.2021.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 11/02/2022] Open
Affiliation(s)
- Maribel Torres-Velázquez
- Department of Biomedical Engineering, College of Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Margaret Parker
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Amber Bo
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Marissa White
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Sean Tanabe
- Center for Consciousness Science, Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USA
| | - Robert A. Pearce
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Richard Lennertz
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Steve Y. Cho
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Barbara Bendlin
- Department of Geriatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Sterling C. Johnson
- Department of Geriatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Vivek Prabhakaran
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Alan B. McMillan
- Department of Biomedical Engineering, College of Engineering, University of Wisconsin-Madison, Madison, WI, USA,Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA,Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Robert D. Sanders
- Specialty of Anaesthetics, University of Sydney, Camperdown, Australia,Department of Anaesthetics, Royal Prince Alfred Hospital, Camperdown, Australia,Institute of Academic Surgery, Camperdown, Australia,Corresponding author.
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Lee JJ, Kang HY, Lee WI, Cho SY, Kim YJ, Lee HJ. Efflux pump gene expression study using RNA-seq in multidrug-resistant TB. Int J Tuberc Lung Dis 2021; 25:974-981. [PMID: 34886926 DOI: 10.5588/ijtld.21.0117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: The mechanism underlying kanamycin (KM) resistance in Mycobacterium tuberculosis is not well understood, although efflux pump proteins are thought to play a role. This study used RNA-seq data to investigate changes in the expression levels of efflux pump genes following exposure to KM.METHODS: RNA expression of efflux pump and regulatory genes following exposure to different concentrations of KM (minimum inhibitory concentration MIC 25 and MIC50) in rrs wild-type strain and rrs A1401G mutated strain were compared with the control group.RESULTS: The selected strains had differential RNA expression patterns. Among the 71 putative efflux pump and regulatory genes, 46 had significant fold changes, and 12 genes (Rv0842, Rv1146, Rv1258c, Rv1473, Rv1686c, Rv1687c, Rv1877, Rv2038c, Rv3065, Rv3197a, Rv3728 and Rv3789) that were overexpressed following exposure to KM were thought to contribute to drug resistance. Rv3197A (whiB7) showed a distinct fold change based on the concentration of KM.CONCLUSION: The significant changes in the expression of the efflux pump and regulatory genes following exposure to KM may provide insights into the identification of a new resistance mechanism.
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Affiliation(s)
- J J Lee
- Department of Laboratory Medicine, Graduate School, Kyung Hee University, Seoul, Korea, Department of Laboratory Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea
| | - H Y Kang
- Department of Laboratory Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea
| | - W-I Lee
- Department of Laboratory Medicine, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea
| | - S Y Cho
- Department of Laboratory Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea
| | - Y J Kim
- Department of Laboratory Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea
| | - H J Lee
- Korean National Tuberculosis Association, Seoul, Korea
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25
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Ng TS, An BP, Cho SY, Hyun H. US Trainee and Faculty Perspectives on Exposure to Nuclear Medicine/Molecular Imaging During Medical School. Curr Probl Diagn Radiol 2021; 50:585-591. [DOI: 10.1067/j.cpradiol.2020.05.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/26/2020] [Accepted: 05/26/2020] [Indexed: 12/12/2022]
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26
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Milgrom SA, Kim J, Chirindel A, Kim J, Pei Q, Chen L, Buxton A, Kessel S, Leal J, McCarten KM, Hoppe BS, Wolden SL, Schwartz CL, Friedman DL, Kelly KM, Cho SY. Prognostic value of baseline metabolic tumor volume in children and adolescents with intermediate-risk Hodgkin lymphoma treated with chemo-radiation therapy: FDG-PET parameter analysis in a subgroup from COG AHOD0031. Pediatr Blood Cancer 2021; 68:e29212. [PMID: 34245210 PMCID: PMC8809108 DOI: 10.1002/pbc.29212] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 06/20/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND Positron emission tomography (PET)-based measures of baseline total-body tumor burden may improve risk stratification in intermediate-risk Hodgkin lymphoma (HL). MATERIALS AND METHODS Evaluable patients were identified from a cohort treated homogeneously with the same combined modality regimen on the Children's Oncology Group AHOD0031 study. Eligible patients had high-quality baseline PET scans. Metabolic tumor volume (MTV) and total lesion glycolysis (TLG) were each measured based on 15 thresholds for every patient. Univariate and multivariable Cox regression and Kaplan-Meier survival analyses assessed for an association of MTV and TLG with event-free survival (EFS). RESULTS From the AHOD0031 cohort (n = 1712), 86 patients were identified who (i) were treated with four cycles of doxorubicin, bleomycin, vincristine, etoposide, prednisone, cyclophosphamide (ABVE-PC) chemotherapy followed by involved field radiotherapy, and (ii) had a baseline PET scan that was amenable to quantitative analysis. Based on univariate Cox regression analysis, six PET-derived parameters were significantly associated with EFS. For each of these, Kaplan-Meier analyses and the log-rank test were used to compare patients with highest tumor burden (i.e., highest 15%) to the remainder of the cohort. EFS was significantly associated with all six PET parameters (all p < .029). In a multivariable model controlling for important covariates including disease bulk and response to chemotherapy, MTV2BP was significantly associated with EFS (p = .012). CONCLUSION Multiple baseline PET-derived volumetric parameters were associated with EFS. MTV2BP was highly associated with EFS when controlling for disease bulk and response to chemotherapy. Incorporation of baseline MTV into risk-based treatment algorithms may improve outcomes in intermediate-risk HL.
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Affiliation(s)
- Sarah A Milgrom
- Department of Radiation Oncology, University of Colorado, Aurora, Colorado, USA
| | - Jihyun Kim
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
- Division of Nuclear Medicine, Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Alin Chirindel
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, Baltimore, Maryland, USA
| | - Jongho Kim
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, Baltimore, Maryland, USA
| | - Qinglin Pei
- Children's Oncology Group, Statistics and Data Center, Department of Biostatistics, University of Florida, Gainesville, Florida, USA
| | - Lu Chen
- Children's Oncology Group, Statistics and Data Center, Department of Biostatistics, University of Florida, Gainesville, Florida, USA
| | - Allen Buxton
- Children's Oncology Group, Statistics and Data Center, Monrovia, California, USA
| | - Sandy Kessel
- Imaging and Radiation Oncology Core Group, Lincoln, Rhode Island, USA
| | - Jeffrey Leal
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, Baltimore, Maryland, USA
| | | | - Bradford S Hoppe
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, USA
| | - Suzanne L Wolden
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Cindy L Schwartz
- Division of Pediatric Hematology, Oncology, and BMT, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Debra L Friedman
- Division of Pediatric Hematology and Oncology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Vanderbilt-Ingram Cancer Center, Nashville, Tennessee, USA
| | - Kara M Kelly
- Department of Pediatric Oncology, Roswell Park Comprehensive Cancer Center, and University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Buffalo, New York, USA
| | - Steve Y Cho
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
- University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
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Abstract
Imaging plays an integral role in the clinical care of patients with breast cancer. This review article focuses on the use of PET imaging for breast cancer, highlighting the clinical indications and limitations of 2-deoxy-2-[18F]fluoro-d-glucose (FDG) PET/CT, the potential use of PET/MRI, and 16α-[18F]fluoroestradiol (FES), a newly approved radiopharmaceutical for estrogen receptor imaging.
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Affiliation(s)
- Amy M Fowler
- Breast Imaging and Intervention Section, Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue, Madison, WI 53792-3252, USA; Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, 1111 Highland Avenue, Madison, WI 53705, USA; University of Wisconsin Carbone Cancer Center, 600 Highland Avenue, Madison, WI 53792, USA.
| | - Steve Y Cho
- University of Wisconsin Carbone Cancer Center, 600 Highland Avenue, Madison, WI 53792, USA; Nuclear Medicine and Molecular Imaging Section, Department of Radiology, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue, Madison, WI 53792-3252, USA
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28
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Pouliot F, Gorin MA, Rowe SP, Saperstein L, Josephson D, Carroll PR, Wong JY, Pantel AR, Cho SY, Gage KL, Piert M, Iagaru A, Pollard JH, Wong V, Jensen J, Stambler N, Morris MJ, Siegel BA. PSMA-targeted imaging with 18F-DCFPyL-PET/CT in patients (pts) withbiochemically recurrent prostate cancer (PCa): A phase 3 study (CONDOR)—A subanalysis of correct localization rate (CLR) and positive predictive value (PPV) by standard of truth. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.15_suppl.5023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5023 Background: PSMA-targeted PET/CT is superior to conventional imaging modalities to localize biochemically recurrent (BCR) PCa after local therapy, particularly in pts with low PSA ( < 2 ng/mL). However, few studies have reported PSMA-targeted PET/CT accuracy compared to a pre-specified rigorous standard of truth (SOT) including histopathology, correlative imaging or treatment response in this population. Here, we report the CLR and PPV of PSMA-targeted 18F-DCFPyLPET/ CT, for each of the pre-defined SOT criteria for the CONDOR prospective phase 3 study. Methods: The study enrolled men with rising PSA after definitive therapy and negative or equivocal standard of care imaging (e.g., CT/MRI, bone scintigraphy, F-18 fluciclovine). A single 9 mCi (333 MBq) ± 20% dose of 18F-DCFPyL was injected, followed by PET/CT 1-2 hours later. Pts with positive 18F-DCFPyL-PET/CT scans based on local interpretation were scheduled for follow up within 60 days to verify suspected lesion(s) using a composite SOT. The primary endpoint was CLR defined as PPV with the requirement of anatomic lesion co-localization between 18F-DCFPyL-PET/CT and the SOT. The SOT consisted of, in descending priority: 1) histopathology, 2) subsequent correlative imaging findings determined by twocentral readers, or 3) post-radiation PSA response. The trial was successful if the lower bound of the 95% confidence interval for CLR exceeded 20% for at least two of three independent, blinded central 18F-DCFPyL-PET/CT reviewers. Results: 208 men (median PSA 0.8 ng/mL) underwent 18F-DCFPyL-PET/CT and the study achieved its primary endpoint: CLR was between 84.8% to 87.0% (lower bound of 95% CI: 77.8%-80.4%) among the three 18F-DCFPyL-PET/CT readers, against the composite SOT. The performance of 18F-DCFPyL-PET/CT by CLR (≥1 lesion co-localized) and PPV (≥1 lesion confirmed) was maintained through all 3 SOT categories. Histopathology (N = 31): 78.6-82.8% and 92.9-93.3% for CLR and PPV, respectively; correlative imaging (N = 100): 86.1-88.6% and 87.0-89.5% for CLR and PPV, respectively; and PSA response (N = 1): 100% for both CLR and PPV. Further analyses of the correlative imaging results showed CLR remained high across the different modalities used a) 18F-fluciclovine-PET/CT (N = 71): (86.8-90.9%); b) MRI (N = 23): (80.0-86.7%); and c) CT (n = 6): (80.0-100%). Conclusions: PSMA-targeted 18F-DCFPyL-PET/CT detected and localized metastatic lesions with high CLR and PPV regardless of which criterion defined CLR that was used, in men with BCR who had negative or equivocal baseline imaging. Clinicaltrials.gov: NCT03739684 Clinical trial information: NCT03739684.
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Affiliation(s)
- Frederic Pouliot
- Cancer Research Center, Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec City, QC, Canada
| | | | - Steven P. Rowe
- Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD
| | | | | | - Peter R. Carroll
- Department of Urology, University of California San Francisco, San Francisco, CA
| | | | | | - Steve Y. Cho
- University of Wisconsin SMPH, Department of Radiology, University of Wisconsin Carbone Cancer Center, Madison, WI
| | | | | | | | | | - Vivien Wong
- Progenics Pharmaceuticals, Inc., New York, NY
| | | | | | | | - Barry A. Siegel
- Washington University School of Medicine in St. Louis, St. Louis, MO
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Vapiwala N, Chen YH, Cho SY, Duan F, Kyriakopoulos C, Shevrin DH, McKay RR, Koontz BF, Yu EY, Beylergil V, Mankoff DA, McConathy J, Liu G, Wong TZ, Carducci MA. Phase III study of local or systemic therapy INtensification DIrected by PET in prostate CAncer patients with post-prostaTEctomy biochemical recurrence (INDICATE): ECOG-ACRIN EA8191. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.15_suppl.tps5098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
TPS5098 Background: Radiation therapy (RT) to the prostate bed and pelvic nodes with short-term androgen deprivation therapy (STAD) is considered a standard of care (SOC) salvage therapy (ST) paradigm for prostate cancer (PC) patients (pts) with post-prostatectomy (RP) biochemical recurrence (BCR). Fluciclovine-PET/CT imaging is FDA-approved in this setting, with improved accuracy for detection of metastases not identified with conventional imaging (CIM). Given PET's greater sensitivity and specificity, its findings are increasingly but variably applied to justify modification or omission of SOC therapies without high-level evidence of clinical benefit. PET may help identify candidates for local or systemic treatment intensification of the otherwise non-tailored SOC approach. Improved systemic control and disease detection with molecular imaging have led to increasing use of focally ablative metastasis-directed RT, to delay or enhance systemic therapy through increased local control. There is also interest in earlier use of systemic therapy; apalutamide (Apa) is a nonsteroidal antiandrogen with established efficacy in improving overall and radiographic progression-free survival (PFS) for non-metastatic castration-resistant and metastatic castration-sensitive PC. This study will evaluate whether pts with PET-detected lesions benefit from such local or systemic treatment intensification approaches. Methods: PC pts with post-RP BCR (PSA>0.5ng/mL; >0.2ng/mL if within 12 mos of RP) and no metastases on CIM who are candidates for SOC ST (RT to prostate bed and pelvic nodes with STAD) are eligible. Prior to study registration, pts undergo SOC baseline PET (18F-fluciclovine but PSMA radiotracers permitted pending commercial availability). Based on institutional clinical interpretation of the SOC PET, pts will be placed in Cohort 1 (PET-negative) or 2 (PET-positive for extra-pelvic metastases). Cohort 1 will be randomized to SOC ST +/- Apa for 6 months and Cohort 2 will be randomized to SOC ST and Apa +/- metastasis-directed RT to PET-positive lesions. The primary endpoint is PFS, defined as time from randomization to radiographic progression on CIM, symptomatic disease or death. Primary objectives are to evaluate whether addition of Apa to SOC ST and addition of metastasis-directed RT to SOC ST and Apa could prolong PFS in Cohorts 1 and 2, respectively. For Cohort 1, 480 pts will be randomized with 85% power to distinguish 5-year PFS rate of 90% (Apa arm) vs. 80% (SOC arm) using one-sided stratified log-rank test with type I error of 0.025. For Cohort 2, 324 pts will be randomized with 85% power to distinguish 5-year PFS rate of 76.5% in the experimental arm from 61.5% in the control arm. Secondary endpoints include overall and event-free survival, toxicity, and PET progression. Clinical trial information: NCT04423211.
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Affiliation(s)
| | | | - Steve Y. Cho
- University of Wisconsin SMPH, Department of Radiology, University of Wisconsin Carbone Cancer Center, Madison, WI
| | | | | | | | - Rana R. McKay
- University of California San Diego, Moores Cancer Center, La Jolla, CA
| | | | - Evan Y. Yu
- Division of Oncology, Department of Medicine, University of Washington, Seattle, WA
| | | | | | | | - Glenn Liu
- University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Terence Z. Wong
- Chief, Division of Nuclear Medicine and Radiotheranostics Professor of Radiology Professor in Medicine, Division of Medical Oncology Duke Cancer Institute Medical Physics Graduate Program Duke University Medical Center, Durham, NC
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30
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Morris MJ, Rowe SP, Gorin MA, Saperstein L, Pouliot F, Josephson D, Wong JYC, Pantel AR, Cho SY, Gage KL, Piert M, Iagaru A, Pollard JH, Wong V, Jensen J, Lin T, Stambler N, Carroll PR, Siegel BA. Diagnostic Performance of 18F-DCFPyL-PET/CT in Men with Biochemically Recurrent Prostate Cancer: Results from the CONDOR Phase III, Multicenter Study. Clin Cancer Res 2021; 27:3674-3682. [PMID: 33622706 DOI: 10.1158/1078-0432.ccr-20-4573] [Citation(s) in RCA: 153] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/08/2021] [Accepted: 02/17/2021] [Indexed: 01/16/2023]
Abstract
PURPOSE Current FDA-approved imaging modalities are inadequate for localizing prostate cancer biochemical recurrence (BCR). 18F-DCFPyL is a highly selective, small-molecule prostate-specific membrane antigen-targeted PET radiotracer. CONDOR was a prospective study designed to determine the performance of 18F-DCFPyL-PET/CT in patients with BCR and uninformative standard imaging. EXPERIMENTAL DESIGN Men with rising PSA ≥0.2 ng/mL after prostatectomy or ≥2 ng/mL above nadir after radiotherapy were eligible. The primary endpoint was correct localization rate (CLR), defined as positive predictive value with an additional requirement of anatomic lesion colocalization between 18F-DCFPyL-PET/CT and a composite standard of truth (SOT). The SOT consisted of, in descending priority (i) histopathology, (ii) subsequent correlative imaging findings, or (iii) post-radiation PSA response. The trial was considered a success if the lower bound of the 95% confidence interval (CI) for CLR exceeded 20% for two of three 18F-DCFPyL-PET/CT readers. Secondary endpoints included change in intended management and safety. RESULTS A total of 208 men with a median baseline PSA of 0.8 ng/mL (range: 0.2-98.4 ng/mL) underwent 18F-DCFPyL-PET/CT. The CLR was 84.8%-87.0% (lower bound of 95% CI: 77.8-80.4). A total of 63.9% of evaluable patients had a change in intended management after 18F-DCFPyL-PET/CT. The disease detection rate was 59% to 66% (at least one lesion detected per patient by 18F-DCFPyL-PET/CT by central readers). CONCLUSIONS Performance of 18F-DCFPyL-PET/CT achieved the study's primary endpoint, demonstrating disease localization in the setting of negative standard imaging and providing clinically meaningful and actionable information. These data further support the utility of 18F-DCFPyL-PET/CT to localize disease in men with recurrent prostate cancer.See related commentary by True and Chen, p. 3512.
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Affiliation(s)
| | - Steven P Rowe
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Michael A Gorin
- The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | | | - David Josephson
- Tower Urology, Cedars Sinai Medical Center, Los Angeles, California
| | | | - Austin R Pantel
- Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Steve Y Cho
- University of Wisconsin-Madison, Madison, Wisconsin
| | - Kenneth L Gage
- Diagnostic Imaging and Interventional Radiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Morand Piert
- Radiology, University of Michigan, Ann Arbor, Michigan
| | | | | | - Vivien Wong
- Progenics Pharmaceuticals, Inc., New York, New York
| | | | - Tess Lin
- Progenics Pharmaceuticals, Inc., New York, New York
| | | | - Peter R Carroll
- University of California San Francisco, San Francisco, California
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31
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Vapiwala N, Chen YH, Cho SY, Duan F, Kyriakopoulos C, Shevrin DH, McKay RR, Koontz BF, Yu EY, Beylergil V, McConathy J, Liu G, Mankoff DA, Wong TZ, Carducci MA. PET-directed local or systemic therapy intensification in prostate cancer patients with post-prostatectomy biochemical recurrence: A trial of the ECOG-ACRIN Cancer Research Group (EA8191). J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.6_suppl.tps267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
TPS267 Background: Radiation therapy (RT) to the prostate bed and pelvic nodes with short-term androgen deprivation therapy (STAD) is considered a standard of care (SOC) salvage therapy (ST) paradigm for prostate cancer (PC) patients (pts) with post-prostatectomy (RP) biochemical recurrence (BCR). Fluciclovine-PET/CT imaging is FDA-approved in this setting, with improved accuracy for detection of metastases (mets) not identified with conventional imaging (CIM). Given greater sensitivity and specificity of PET, its findings are being increasingly but variably applied to justify modification or omission of SOC therapies without high-level evidence of clinical benefit. PET may help identify candidates for local or systemic treatment intensification of otherwise non-tailored SOC. Earlier detection of mets with molecular imaging has led to increasing use of focally ablative met-directed RT, to delay or enhance systemic therapy through better local control. There is also interest in earlier use of advanced systemic therapy; apalutamide (Apa) is a nonsteroidal antiandrogen with established efficacy in improving overall and radiographic progression-free survival (PFS) for non-metastatic castrate-resistant and metastatic castration-sensitive PC, and potential activity for low-volume mets. This study will evaluate whether pts with PET-detected lesions benefit from such local or systemic treatment intensification approaches. Methods: PC pts with post-RP BCR (PSA>0.5ng/mL; >0.2 if RP within 12 mos), and negative CIM who are candidates for SOC ST (RT to prostate bed and pelvic nodes + STAD) and undergo SOC baseline PET are eligible. The study will initially use 18F-fluciclovine but permit additional radiotracers based on FDA approval and availability. Based on institutional clinical interpretation of the SOC PET, pts will be placed in Cohort 1 (PET-negative) or 2 (PET-positive for extra-pelvic mets). Cohort 1 will be randomized to SOC ST +/- Apa for 6 months and Cohort 2 will be randomized to SOC ST and Apa +/- met-directed RT to PET-positive lesions. The primary endpoint is PFS, defined as time from randomization to radiographic progression on CIM, symptomatic disease or death. Primary objectives are to evaluate whether addition of Apa to SOC ST and addition of met-directed RT to SOC ST and Apa could prolong PFS in Cohorts 1 and 2, respectively. For Cohort 1, 480 pts will be randomized with 85% power to distinguish 5-year PFS rate of 90% (Apa arm) vs. 80% (SOC arm) using one-sided stratified logrank test with type I error of 0.025. For Cohort 2, 324 pts will be randomized with 85% power to distinguish 5-year PFS rate of 76.5% in experimental arm from 61.5% in control arm. Secondary endpoints include overall and event-free survival, toxicity, and PET progression. Trial was activated on October 8, 2020; NCT04423211. Acknowledgement: This study was conducted by the ECOG-ACRIN Cancer Research Group (Peter J. O'Dwyer, MD and Mitchell D. Schnall, MD, PhD, Group Co-Chairs) and supported by the National Cancer Institute of the National Institutes of Health under the following award numbers: U10CA180794, U10CA180820, U10CA180868, U10CA180888, U10CA180821, UG1CA233196, UG1CA233253, UG1CA233277, UG1CA233328, and UG1CA233330. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. Mention of trade names, commercial products, or organizations does not imply endorsement by the U.S. government. Clinical trial information: NCT 04423211.
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Affiliation(s)
| | | | - Steve Y. Cho
- University of Wisconsin SMPH, Department of Radiology, University of Wisconsin Carbone Cancer Center, Madison, WI
| | | | | | | | - Rana R. McKay
- University of California San Diego, Moores Cancer Center, La Jolla, CA
| | | | - Evan Y. Yu
- Division of Oncology, Department of Medicine, University of Washington, Seattle, WA
| | | | | | - Glenn Liu
- University of Wisconsin Carbone Cancer Center, Madison, WI
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Sharifi MN, Lovrec P, Eickhoff JC, Kenarsary A, Jarrard DF, Floberg J, Cho SY, Kyriakopoulos C, Emamekhoo H. Diagnostic utility of (18)f-fluciclovine positron emission tomography (FACBC) in biochemically recurrent (BCR) prostate cancer (PCa) based on prior primary treatment modality for localized disease and the impact of FACBC findings on treatment selection. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.6_suppl.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
34 Background: Management of BCR PCa requires accurate assessment of location and extent of recurrent disease. FACBC has been shown to be a sensitive modality for detection and localization of recurrent disease but treatment guidelines are based on the findings of conventional (conv) imaging, including computed tomography, magnetic resonance imaging, or bone scintigraphy, and little is known about how prior treatment impacts FACBC findings and concordance with conv scans. Methods: This single-center retrospective study included 137 patients (pts) who had FACBC for BCR at the University of Wisconsin-Madison from 10/2017-10/2019. Clinical, pathological, imaging, and treatment data were collected by chart review. Pts were classified by type of primary treatment for localized PCa, either radical prostatectomy (RP) or radiation therapy (RT). Findings of conv scans performed within 4 weeks prior or any time after FACBC were collected. Results: 105 pts had RP and 32 pts had RT as their primary PCa treatment. Gleason score and PSA at diagnosis were similar between groups. Median PSA at time of FACBC was higher in the RT compared to RP group (3.3 vs 0.7 ng/dL) and median time from initial diagnosis to FACBC was longer (70 vs 55 months). Frequency of (+) FACBC findings was higher in the RT group (66% vs 47%); only 3% of pts in the RT group had a (-) FACBC compared to 29% in the RP group. The rate of (+) lesions in the prostate/prostate bed was higher in the RT group (41% vs 22%), while the rate of (+) lesions in pelvic nodes and distant sites was similar between groups. Of 69 pts who also had conv imaging, 61% had concordant conv imaging findings. In the RT group, conv and FACBC findings were similar in 47% of pts and not similar in 28%. In the RP group, conv and FACBC findings were similar in 26% of pts and not similar in 17%. Management after FACBC is listed in table. Median time from FACBC to first (+) conv scans was 6 (range: 0-18) and 5 (range: 0-17) months for RT and RP groups, respectively. Conclusions: In this large retrospective cohort, pts treated with initial RT had a longer median time from diagnosis to FACBC and higher median PSA at the time of FACBC compared to the RP group. RT patients had a higher rate of (+) FACBC findings but were more likely to continue on observation. The median time from FACBC to first (+) conv scan was 5-6 months, supporting the role of FACBC in earlier detection of recurrent disease in both groups of patients. Further analysis of concordance between FACBC and conv imaging is in process. [Table: see text]
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Affiliation(s)
| | - Petra Lovrec
- University of Wisconsin SMPH, Department of Radiology, Division of Nuclear Medicine, Madison, WI
| | - Jens C. Eickhoff
- University of Wisconsin, Department of Biostatistics and Medical Informatics, Madison, WI
| | | | | | - John Floberg
- University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Steve Y. Cho
- University of Wisconsin SMPH, Department of Radiology, University of Wisconsin Carbone Cancer Center, Madison, WI
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Esdaille ARP, Lawrence E, Kyriakopoulos C, Johnson B, Roldán-Alzate A, Huang W, Beebe DJ, Emamekhoo H, Wells S, Lang JM, Cho SY, Jarrard DF. 18F-DCFPyL PSMA PET imaging compared to conventional imaging in the detection of pelvic nodal metastases in patients with locally advanced or oligometastatic prostate cancer. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.6_suppl.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
36 Background: Interest has arisen in the use of prostate specific membrane antigen (PSMA) PET/CT imaging to detect prostate cancer at metastatic sites using different tracers. Here, we examined the ability of 18F-DCFPyL (DCFPyL) PSMA-based PET imaging to detect nodal disease in comparison to conventional imaging in a cohort of men with locally advanced or oligometastatic prostate cancer (PC). Methods: UW17009 is an IRB-approved open-label, single-arm trial that enrolled 26 patients with newly diagnosed advanced PC. Patients received androgen deprivation therapy and docetaxel for 3 months followed by radical prostatectomy (RP) and pelvic lymph node dissection (PLND). Exploratory interventions include PSMA PET/CT and MRI imaging as a method for determining treatment response and heterogeneity in primary PC and metastatic lesions performed before and after chemohormonal therapy. Prior to randomization, patients received DCFPyL PET/CT and PET/MR imaging as well as CTs and Bone Scans. A mean dose of 7.86 mCi DCFPyL was administered. Whole-body PET/CT images were acquired starting at approximately 60 minutes after radiotracer injection followed by dedicated pelvic PET/MR and whole-body PET/MR. PET imaging findings were compared to conventional dedicated CT imaging and were correlated to the results of final pathologic examination of each pelvic nodal dissection. Results: 26 patients underwent conventional and exploratory imaging with subsequent neoadjuvant treatment, RP and PLND. The mean diagnostic PSA was 32.1 ng/dl and 88.5% had Gleason 9 PCa. Using conventional imaging, pelvic nodal disease was identified in 6/26 patients. Pelvic lymph node uptake was identified in 12/26 patients using DCFPyL-based PSMA PET. Initial correlation of the pathologic specimens with pretreatment PSMA PET imaging revealed pelvic nodal metastatic PC in 10/12(83%) patients. On a per-lymph node packet basis (6 per patient), there were 156 evaluable regions, including 65 from patients with positive nodes. PSMA detected 14 packets that were positive for PC and 102 packets that were negative on imaging and final pathology. PC was missed in 5 packets. The mean tumor size in the missed nodes was 2.3 mm(range 1-4 mm). Calculated sensitivity was 73.7%(95% CI [48.8, 90.8]), 85.7 % specificity(95% CI[78.1, 91.4]), and 95.3 % negative predictive value(95% CI[90.5, 97.7]). Conclusions: In comparison to conventional imaging, in this cohort, DCFPyL PSMA-based PET imaging identified nodal positive disease at twice the rate and when evaluating on a per-packet basis, there was high negative predictive value. Ongoing analysis of post-chemohormonal therapy PET imaging may provide more information regarding tumor response in this cohort.
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Affiliation(s)
| | - Edward Lawrence
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | | | | | | | - Wei Huang
- University of Wisconsin Madison, Madison, WI
| | - David J. Beebe
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI
| | - Hamid Emamekhoo
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Shane Wells
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | | | - Steve Y. Cho
- University of Wisconsin SMPH, Department of Radiology, University of Wisconsin Carbone Cancer Center, Madison, WI
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Pouliot F, Gorin MA, Rowe SP, Saperstein L, Josephson D, Carroll PR, Wong JY, Pantel AR, Cho SY, Gage KL, Piert M, Iagaru A, Pollard JH, Wong V, Jensen J, Stambler N, Morris MJ, Siegel BA. PSMA-targeted imaging with 18F-DCFPyL-PET/CT in patients (pts) with biochemically recurrent prostate cancer (PCa): A phase III study (CONDOR)—A subanalysis of correct localization rate (CLR) and positive predictive value (PPV) by standard of truth. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.6_suppl.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
33 Background: PSMA-targeted PET/CT is superior to conventional imaging modalities to localize biochemically recurrent (BCR) PCa after local therapy, particularly in pts with low PSA (<2 ng/mL). However, few studies have reported PSMA-targeted PET/CT accuracy compared to a pre-specified rigorous standard of truth (SOT) including histopathology, correlative imaging or treatment response in this population. Here, we report the CLR and PPV of PSMA-targeted 18F-DCFPyL-PET/CT, for each of the pre-defined SOT criteria for the CONDOR prospective phase 3 study. Methods: The study enrolled men with rising PSA after definitive therapy and negative or equivocal standard of care imaging (e.g., CT/MRI, bone scintigraphy, F-18 fluciclovine). A single 9 mCi (333 MBq) ± 20% dose of 18F-DCFPyL was injected, followed by PET/CT 1-2 hours later. Pts with positive 18F-DCFPyL-PET/CT scans based on local interpretation were scheduled for follow up within 60 days to verify suspected lesion(s) using a composite SOT. The primary endpoint was CLR defined as PPV with the requirement of anatomic lesion co-localization between 18F-DCFPyL-PET/CT and the SOT. The SOT consisted of, in descending priority: 1) histopathology, 2) subsequent correlative imaging findings determined by two central readers, or 3) post-radiation PSA response. The trial was successful if the lower bound of the 95% confidence interval for CLR exceeded 20% for at least two of three independent, blinded central 18F-DCFPyL-PET/CT reviewers. Results: 208 men (median PSA 0.8 ng/mL) underwent 18F-DCFPyL-PET/CT and the study achieved its primary endpoint: CLR was between 84.8% to 87.0% (lower bound of 95% CI: 77.8%-80.4%) among the three 18F-DCFPyL-PET/CT readers, against the composite SOT. The performance of 18F-DCFPyL-PET/CT by CLR (≥1 lesion co-localized) and PPV (≥1 lesion confirmed) was maintained through all 3 SOT categories. Histopathology (N=31): 78.6-82.8% and 92.9-93.3% for CLR and PPV, respectively; correlative imaging (N=100): 86.1-88.6% and 87.0-89.5% for CLR and PPV, respectively; and PSA response (N=1): 100% for both CLR and PPV. Further analyses of the correlative imaging results showed CLR remained high across the different modalities used a) 18F-fluciclovine-PET/CT (N=71): (86.8-90.9%); b) MRI (N=23): (80.0-86.7%); and c) CT (n=6): (80.0-100%). Conclusions: PSMA-targeted 18F-DCFPyL-PET/CT detected and localized metastatic lesions with high CLR and PPV regardless of which criterion defined CLR that was used, in men with BCR who had negative or equivocal baseline imaging. Clinical trial information: NCT03739684.
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Affiliation(s)
- Frederic Pouliot
- Cancer Research Center, Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec City, QC, Canada
| | | | - Steven P. Rowe
- Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD
| | | | | | - Peter R. Carroll
- Dept. of Urology, University of California San Francisco, San Francisco, CA
| | | | | | - Steve Y. Cho
- University of Wisconsin SMPH, Department of Radiology, University of Wisconsin Carbone Cancer Center, Madison, WI
| | | | | | | | | | - Vivien Wong
- Progenics Pharmaceuticals, Inc., New York, NY
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Esdaille ARP, Kyriakopoulos C, Cho SY, Johnson B, Allen GO, Huang W, Roldán-Alzate A, Beebe DJ, Emamekhoo H, Wells S, Lang JM, Jarrard DF. Preoperative predictors of biochemical recurrence in a phase II trial of neoadjuvant therapy in very high-risk prostate cancer. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.6_suppl.74] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
74 Background: Understanding the lethal nature of high risk prostate cancer, there is a need for the development of multimodal therapies. Prior studies have confirmed a survival benefit with the addition of docetaxel to androgen deprivation therapy (ADT) in men with metastatic hormone-sensitive prostate cancer (HSPC). We conducted a Phase II trial enrolling men with very high risk localized, locally advanced or oligometastatic prostate cancer (PC) to examine resistance and response to neoadjuvant chemohormonal therapy. This analysis aims to identify the preoperative predictors of biochemical recurrence (BCR). Methods: UW17009 is an IRB-approved open-label, single-arm trial that recruited 26 men with newly diagnosed advanced PC. Patients received ADT and docetaxel for 3 months followed by prostatectomy. The primary endpoint was pathologic complete response rate. A secondary clinical objective was the rate of PSA recurrence 12 months after surgery. The pre-trial PSAs, age, cancer grade, stage, percent tumor involvement of the initial biopsy, metastatic disease on conventional and 18F-DCFPyL PSMA (DCFPyL) PET/CT and MRI imaging, completion of chemohormonal therapy and PSA nadirs following chemohormonal therapy were assessed in relationship to biochemical recurrence. One way ANOVA was used to evaluate differences among continuous values: age, PSA at diagnosis, percent tumor involvement, and PSA nadir after chemo ADT. Fisher’s exact tests were used to evaluate the differences among categorical variables: stage at diagnosis, positive bone scan, and positive PSMA PET. Results: 26 patients were enrolled and underwent neoadjuvant treatment, radical prostatectomy (RP) and lymph node dissection. The median age was 62 (IQR 58-66), mean PSA at diagnosis was 32.8 ng/dl and 88.4% had Gleason 9 cancer. At study initiation, 12/26 patients had metastatic disease detected by DCFPyL-based PSMA PET. Final pathology demonstrated 81%(21/26) had ≥ pT3 and 73%(19/26) patients had negative margins. Positive lymph nodes were found in 10/26(38.5%) patients on final pathology. At week 6 after surgery, 91%(24/26) had undetectable PSA. At a mean follow up of 12.1 months(5.2-21.4), the biochemical recurrence rate is 58%(15/26). Features associated with BCR include stage, % tumor involvement, and positive PSMA PET scan. All patients with positive margins and 9/10 patients with positive nodes at final pathology developed BCR at a mean follow up of 12 months. Conclusions: In this neoadjuvant cohort, stage T2c, elevated PSA, positive pre-operative PSMA PET/CT, and PSA nadir > 1 following chemohormonal therapy predict biochemical recurrence. Clinically, and in the short term, neoadjuvant chemohormonal therapy prior to definitive surgery for very high risk localized and/or oligometastatic PC generates local tumor control with a high rate of negative surgical margins.
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Affiliation(s)
| | | | - Steve Y. Cho
- University of Wisconsin SMPH, Department of Radiology, University of Wisconsin Carbone Cancer Center, Madison, WI
| | | | - Glenn O. Allen
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Wei Huang
- University of Wisconsin Madison, Madison, WI
| | | | - David J. Beebe
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI
| | - Hamid Emamekhoo
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Shane Wells
- University of Wisconsin School of Medicine and Public Health, Madison, WI
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Zukotynski KA, Emmenegger U, Hotte S, Kapoor A, Fu W, Blackford AL, Valliant J, Bénard F, Kim CK, Markowski MC, Eisenberger MA, Antonarakis ES, Pienta KJ, Gorin MA, Lubanovic M, Kim J, Pomper MG, Cho SY, Rowe SP. Prospective, Single-Arm Trial Evaluating Changes in Uptake Patterns on Prostate-Specific Membrane Antigen–Targeted 18F-DCFPyL PET/CT in Patients with Castration-Resistant Prostate Cancer Starting Abiraterone or Enzalutamide. J Nucl Med 2021; 62:1430-1437. [DOI: 10.2967/jnumed.120.259069] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
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Weisman AJ, Kim J, Lee I, McCarten KM, Kessel S, Schwartz CL, Kelly KM, Jeraj R, Cho SY, Bradshaw TJ. Automated quantification of baseline imaging PET metrics on FDG PET/CT images of pediatric Hodgkin lymphoma patients. EJNMMI Phys 2020; 7:76. [PMID: 33315178 PMCID: PMC7736382 DOI: 10.1186/s40658-020-00346-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 11/30/2020] [Indexed: 11/10/2022] Open
Abstract
PURPOSE For pediatric lymphoma, quantitative FDG PET/CT imaging features such as metabolic tumor volume (MTV) are important for prognosis and risk stratification strategies. However, feature extraction is difficult and time-consuming in cases of high disease burden. The purpose of this study was to fully automate the measurement of PET imaging features in PET/CT images of pediatric lymphoma. METHODS 18F-FDG PET/CT baseline images of 100 pediatric Hodgkin lymphoma patients were retrospectively analyzed. Two nuclear medicine physicians identified and segmented FDG avid disease using PET thresholding methods. Both PET and CT images were used as inputs to a three-dimensional patch-based, multi-resolution pathway convolutional neural network architecture, DeepMedic. The model was trained to replicate physician segmentations using an ensemble of three networks trained with 5-fold cross-validation. The maximum SUV (SUVmax), MTV, total lesion glycolysis (TLG), surface-area-to-volume ratio (SA/MTV), and a measure of disease spread (Dmaxpatient) were extracted from the model output. Pearson's correlation coefficient and relative percent differences were calculated between automated and physician-extracted features. RESULTS Median Dice similarity coefficient of patient contours between automated and physician contours was 0.86 (IQR 0.78-0.91). Automated SUVmax values matched exactly the physician determined values in 81/100 cases, with Pearson's correlation coefficient (R) of 0.95. Automated MTV was strongly correlated with physician MTV (R = 0.88), though it was slightly underestimated with a median (IQR) relative difference of - 4.3% (- 10.0-5.7%). Agreement of TLG was excellent (R = 0.94), with median (IQR) relative difference of - 0.4% (- 5.2-7.0%). Median relative percent differences were 6.8% (R = 0.91; IQR 1.6-4.3%) for SA/MTV, and 4.5% (R = 0.51; IQR - 7.5-40.9%) for Dmaxpatient, which was the most difficult feature to quantify automatically. CONCLUSIONS An automated method using an ensemble of multi-resolution pathway 3D CNNs was able to quantify PET imaging features of lymphoma on baseline FDG PET/CT images with excellent agreement to reference physician PET segmentation. Automated methods with faster throughput for PET quantitation, such as MTV and TLG, show promise in more accessible clinical and research applications.
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Affiliation(s)
- Amy J Weisman
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA
| | - Jihyun Kim
- Department of Radiology, University of Wisconsin-Madison, Madison, WI, USA
| | - Inki Lee
- Department of Nuclear Medicine Korea Cancer Centre Hospital, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | | | | | | | - Kara M Kelly
- Department of Pediatrics, Roswell Park Comprehensive Cancer Center, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY, USA
| | - Robert Jeraj
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA
| | - Steve Y Cho
- Department of Radiology, University of Wisconsin-Madison, Madison, WI, USA
- University of Wisconsin Carbone Comprehensive Cancer Center, Madison, WI, USA
| | - Tyler J Bradshaw
- Department of Radiology, University of Wisconsin-Madison, Madison, WI, USA.
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Witt JS, Kuczmarska-Haas A, Lubner M, Reeder SB, Cho SY, Minter R, Weber S, Ronnekleiv-Kelly S, Abbott D, LoConte N, Mulkerin DL, Lubner SJ, Uboha NV, Deming D, Ritter MA, Mohindra P, Bassetti MF. A Phase 1 Dose Escalation Study of Neoadjuvant SBRT Plus Elective Nodal Radiation with Concurrent Capecitabine for Resectable Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2020; 109:458-463. [PMID: 32942002 DOI: 10.1016/j.ijrobp.2020.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 07/23/2020] [Accepted: 09/08/2020] [Indexed: 11/19/2022]
Abstract
PURPOSE The role of neoadjuvant radiation for resectable pancreatic adenocarcinoma is controversial. We performed a prospective dose-escalation study of neoadjuvant stereotactic body radiation therapy (SBRT) with concurrent capecitabine and elective nodal irradiation (ENI) followed by surgical resection to explore the toxicity and feasibility of this approach. METHODS AND MATERIALS Patients with biopsy proven, resectable cancers of the pancreatic head were enrolled. A 4 + 4 dose-escalation design was employed delivering 5 fractions of 5 to 7 Gy to primary tumor with concurrent capecitabine. The maximum tolerated dose level was expanded for an additional 4 patients. Patients at all dose levels were treated with ENI delivering 25 Gy in 5 fractions. Dose-limiting toxicity was defined as any grade ≥3 nonhematologic toxicity (National Cancer Institute Common Terminology Criteria for Adverse Events v4.0) attributable to chemoradiation occurring within 90 days of SBRT. RESULTS A total of 17 patients were enrolled with 16 patients evaluable and 13 patients ultimately proceeding to surgery. The most common toxicity was nausea (56%). There were no dose-limiting toxicities, and SBRT was maximally dose escalated to 35 Gy in 5 fractions for 8 patients. All patients completing surgery had R0 resections. Seven patients (54%) had moderate treatment effect identified in pathologic specimens. Three patients (23%) developed locoregional recurrences, with 2 (15%) partially included within the treated volume. CONCLUSIONS SBRT was safely dose escalated to 35 Gy in 5 fractions along with concurrent capecitabine and ENI. This regimen will be used in a future expansion cohort.
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Affiliation(s)
- Jacob S Witt
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Aleksandra Kuczmarska-Haas
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Meghan Lubner
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Scott B Reeder
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Steve Y Cho
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Rebecca Minter
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Sharon Weber
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Sean Ronnekleiv-Kelly
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Daniel Abbott
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Noelle LoConte
- Division of Hematology, Medical Oncology, and Palliative Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Daniel L Mulkerin
- Division of Hematology, Medical Oncology, and Palliative Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Sam J Lubner
- Division of Hematology, Medical Oncology, and Palliative Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Nataliya V Uboha
- Division of Hematology, Medical Oncology, and Palliative Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Dustin Deming
- Division of Hematology, Medical Oncology, and Palliative Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Mark A Ritter
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Pranshu Mohindra
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore Maryland
| | - Michael F Bassetti
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
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Geller JI, Pressey JG, Smith MA, Kudgus RA, Cajaiba M, Reid JM, Hall D, Barkauskas DA, Voss SD, Cho SY, Berg SL, Dome JS, Fox E, Weigel BJ. ADVL1522: A phase 2 study of lorvotuzumab mertansine (IMGN901) in children with relapsed or refractory wilms tumor, rhabdomyosarcoma, neuroblastoma, pleuropulmonary blastoma, malignant peripheral nerve sheath tumor, or synovial sarcoma-A Children's Oncology Group study. Cancer 2020; 126:5303-5310. [PMID: 32914879 DOI: 10.1002/cncr.33195] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/29/2020] [Accepted: 06/29/2020] [Indexed: 01/27/2023]
Abstract
BACKGROUND Lorvotuzumab mertansine (IMGN901) is an antibody-drug conjugate linking an antimitotic agent (DM1) to an anti-CD56 antibody (lorvotuzumab). Preclinical efficacy has been noted in Wilms tumor, rhabdomyosarcoma, and neuroblastoma. Synovial sarcoma, malignant peripheral nerve sheath tumor (MPNST), and pleuropulmonary blastoma also express CD56. A phase 2 trial of lorvotuzumab mertansine was conducted to assess its efficacy, recommended phase 2 dose, and toxicities. METHODS Eligible patients had relapsed after or progressed on standard therapy for their tumor type. Lorvotuzumab mertansine (110 mg/m2 per dose) was administered at the adult recommended phase 2 dose intravenously on days 1 and 8 of 21-day cycles. Dexamethasone premedication was used. Pharmacokinetic samples, peripheral blood CD56-positive cell counts, and tumor CD56 expression were assessed. RESULTS Sixty-two patients enrolled. The median age was 14.3 years (range, 2.8-29.9 years); 35 were male. Diagnoses included Wilms tumor (n = 17), rhabdomyosarcoma (n = 17), neuroblastoma (n = 12), synovial sarcoma (n = 10), MPNST (n = 5), and pleuropulmonary blastoma (n = 1). Five patients experienced 9 dose-limiting toxicities: hyperglycemia (n = 1), colonic fistula (n = 1) with perforation (n = 1), nausea (n = 1) with vomiting (n = 1), increased alanine aminotransferase in cycle 1 (n = 2), and increased alanine aminotransferase in cycle 2 (n = 1) with increased aspartate aminotransferase (n = 1). Non-dose-limiting toxicities (grade 3 or higher) attributed to lorvotuzumab mertansine were rare. The median values of the maximum concentration, half-life, and area under the curve from zero to infinity for DM1 were 0.87 µg/mL, 35 hours, and 27.9 µg/mL h, respectively. Peripheral blood CD56+ leukocytes decreased by 71.9% on day 8. One patient with rhabdomyosarcoma had a partial response, and 1 patient with synovial sarcoma achieved a delayed complete response. CONCLUSIONS Lorvotuzumab mertansine (110 mg/m2 ) is tolerated in children at the adult recommended phase 2 dose; clinical activity is limited.
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Affiliation(s)
- James I Geller
- Division of Oncology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
| | - Joseph G Pressey
- Division of Oncology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
| | - Malcolm A Smith
- Cancer Therapy Evaluation Program, National Institutes of Health, Bethesda, Maryland
| | - Rachel A Kudgus
- Mayo Clinic Comprehensive Cancer Center, Rochester, Minnesota
| | | | - Joel M Reid
- Mayo Clinic Comprehensive Cancer Center, Rochester, Minnesota
| | - David Hall
- Children's Oncology Group, Monrovia, California
| | - Donald A Barkauskas
- Keck School of Medicine, University of Southern California, Los Angeles, California
| | | | - Steve Y Cho
- University of Wisconsin Hospital and Clinics, Madison, Wisconsin
| | - Stacey L Berg
- Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas
| | | | - Elizabeth Fox
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Brenda J Weigel
- University of Minnesota Medical Center, Minneapolis, Minnesota
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Romano C, Cho SY, Marino S, Raucci U, Fiumara A, Falsaperla R, Massimino CR, Taibi R, Greco F, Venti V, Sullo F, Fontana A, Rizzo R, Pustorino E, Jin DK, Pavone P. Primary headache in childhood associated with psychiatric disturbances: an update. Eur Rev Med Pharmacol Sci 2020; 24:6893-6898. [PMID: 32633382 DOI: 10.26355/eurrev_202006_21680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Primary headache disorders in children are one of the most prominent topics in the pediatric neurology literature. However, there are many unsolved aspects, including the conditions associated with migraine. The present study aims to report on the frequency of behavioral comorbidities in the setting of primary headache in childhood. PATIENTS AND METHODS In this study, we enlisted 475 children (290 males and 185 females; ratio 1.6:1), aged 4 to 14 years, who were affected by primary headache. In direct interviews, children and parents gave information on the association of their headache with, attention-deficit/hyperactivity disorder, learning disabilities, tics, anxiety, depression, and obsessive-compulsive disorder. Other 475 children with no history of headache or recognized neurological conditions were matched for age, sex, race, and socioeconomic status and were used as controls. RESULTS A significant association of primary headache was found with anxiety and depression (p-value <0.001); overall, behavioral disorders were more common in children who experienced headache than in controls (p-value <0.001). CONCLUSIONS Primary headache in children is not associated with most of the common behavioral conditions. On the contrary, there was a significant association with anxiety and depression, as reported in adults.
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Affiliation(s)
- C Romano
- Department Clinical and Experimental Medicine, Child and Adolescent Neuropsychiatry, University of Catania, Catania, Italy.
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Abstract
Immune checkpoint blockade has demonstrated the ability to modulate the immune system to produce durable responses in a wide range of cancers and has significantly impacted the standard of care. However, many cancer patients still do not respond to immune checkpoint blockade or have a limited duration of antitumor responses. Moreover, immune-related adverse events caused by immune checkpoint blockade can be severe and debilitating for some patients, limiting continuation of therapy and resulting in severe autoimmune conditions. Standard-of-care conventional anatomic imaging modalities and tumor response criteria have limitations to adequately assess tumor responses, especially early in the course of therapy, for risk-adapted clinical management to inform care of patients treated with immunotherapy. Molecular imaging with position emission tomography (PET) provides a noninvasive functional biomarker of tumor response, and of immune activation, for patients on immune-based therapies to help address these needs. 18F-FDG (FDG) PET/CT is readily available clinically and a number of studies have evaluated the use of this agent for assessment of prognosis, treatment response and immune activation for patients treated with immune checkpoint blockade. In this review paper, we discuss the current oncologic applications and imaging needs of cancer immunotherapy, recent studies applying FDG PET/CT for tumor response assessment, and evaluation of immune-related adverse events for improving clinical management. We largely focus on metastatic melanoma; however, we generalize where applicable to immunotherapy in other tumor types. We also briefly discuss PET imaging and quantitation as well as emerging non-FDG PET imaging radiotracers for cancer immunotherapy imaging.
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Affiliation(s)
- Steve Y Cho
- University of Wisconsin Carbone Cancer Center, Madison, WI; Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI.
| | - Daniel T Huff
- University of Wisconsin Carbone Cancer Center, Madison, WI; Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Robert Jeraj
- University of Wisconsin Carbone Cancer Center, Madison, WI; Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI; Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Mark R Albertini
- University of Wisconsin Carbone Cancer Center, Madison, WI; Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI; Medical Service, William S. Middleton Memorial Veterans Hospital, Madison, WI
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Morris MJ, Carroll PR, Saperstein L, Pouliot F, Josephson D, Wong JY, Pantel AR, Cho SY, Gage K, Piert M, Iagaru A, Pollard JH, Wong V, Jensen JD, Stambler N, Gorin MA, Siegel B. Impact of PSMA-targeted imaging with 18F-DCFPyL-PET/CT on clinical management of patients (pts) with biochemically recurrent (BCR) prostate cancer (PCa): Results from a phase III, prospective, multicenter study (CONDOR). J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.15_suppl.5501] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
5501 Background: Current imaging modalities are inadequate for localizing and characterizing occult disease in men with BCR PCa, particularly in pts with low PSAs (<2 ng/mL). There is a need for improved diagnostic imaging to better inform treatment planning. 18F-DCFPyL (PyL) is a novel PET imaging agent that binds selectively with high affinity to PSMA, which is overexpressed in PCa cells. Methods: Men ≥18 years- with rising PSA after definitive therapy and negative or equivocal standard of care imaging (e.g., CT/MRI, bone scintigraphy) were enrolled. A single 9 mCi (333 MBq) ± 20% dose of PyL was injected, followed by PET/CT 1-2 hours later. Primary endpoint was correct localization rate (CLR), defined as percentage of pts with a 1:1 correspondence between at least one lesion identified by PyL-PET/CT and the composite standard of truth: pathology, correlative imaging, or PSA response. The trial was successful if the lower bound of the 95% confidence interval (LLCI) for CLR exceeded 20% for two of three independent, blinded central PyL-PET/CT reviewers. The secondary endpoint, impact of PyL-PET/CT on clinical management of pts was based on the treating physician’s documented clinical plans before and after PyL-PET/CT. Results: 208 men (median PSA 0.8 [0.2 - 98.4] ng/mL) underwent PyL PET/CT. The study achieved its primary endpoint: CLR of 84.8% to 87.0% among the three PyL-PET/CT readers; the LLCI for CLR by all three reviewers was >77%. Here we report the clinical impact. Based on local radiology assessment, PSMA-avid lesion(s) were identified in 69.3% (142/208) of pts. 63.9% (131/205) had a change in intended management after PyL-PET/CT, of which 78.6% (103/131) were attributable to positive PyL finding(s) and 21.4% (28/131) to negative PyL scans. Changes included: salvage local therapy to systemic therapy (n=58); observation before initiating therapy (n=49); noncurative systemic therapy to salvage local therapy (n=43); and planned treatment to observation (n=9). PyL was well tolerated with one drug-related SAE (hypersensitivity) and the most common AE being headache (n=4; 1.9%). Conclusions: PSMA-targeted PyL-PET/CT detected and localized occult disease in most men with BCR presenting with negative or equivocal conventional imaging. PyL-PET/CT led to changed management plans in the majority of pts, thus providing evidence that clinicians find PSMA PET imaging useful in men with recurrent or suspected metastatic PCa. Clinical trial information: NCT03739684 .
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Affiliation(s)
| | - Peter R. Carroll
- Dept. of Urology, University of California San Francisco, San Francisco, CA
| | | | - Frederic Pouliot
- Cancer Research Center, Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Quebec City, QC, Canada
| | | | | | | | - Steve Y. Cho
- University of Wisconsin School of Medicine, Madison, WI
| | | | | | | | | | - Vivien Wong
- Progenics Pharmaceuticals, Inc., New York, NY
| | | | | | - Michael A. Gorin
- Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Barry Siegel
- Siteman Cancer Center/Washington University, St. Louis, MO
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Kyriakopoulos C, Johnson B, Heninger E, Khemees TA, Roldán-Alzate A, Huang W, Beebe DJ, Emamekhoo H, Wells SA, Jarrard DF, Cho SY, Lang JM. Phase II trial of neoadjuvant chemohormonal therapy (NAC) in prostate cancer (PC) with response assessment using PSMA PET/MRI. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.6_suppl.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
334 Background: Previous studies have shown that addition of docetaxel to androgen deprivation therapy (ADT) significantly improves progression-free survival (PFS) and overall survival (OS) in men with metastatic hormone-sensitive PC. Removal of the primary may also improve outcomes by reducing tumor self-seeding. We are conducting a phase II trial in men with PC to examine the feasibility of NAC, response using PSMA PET/MRI imaging and molecular mechanisms of resistance. Methods: This is an open-label, single-arm trial. Thirty patients with newly diagnosed very high risk localized, locally advanced or oligometastatic PC will receive ADT/docetaxel for three cycles before prostatectomy. The primary endpoint is rate of complete pathologic response. Key secondary objectives include PSA recurrence at month 12 after surgery. Exploratory objectives include tumor response and response heterogeneity in primary and metastatic tumors before and after treatment assessed by PSMA PET/MRI and evaluation of gene expression signatures in cancer cells, prostate stroma, bone marrow microenvironment and circulating tumor cells. Results: To date, 26 of 30 patients have enrolled and completed treatment. Mean age was 61 and mean PSA at time of diagnosis was 32.1 ng/dl. All patients had multi-focal prostate cancer with 23/26 patients with Gleason Grade Group 5. Metastatic disease by conventional imaging was identified in 6/26 patients (5 in lymph nodes [LN] and bone, 1 in LN only). Treatment was overall well tolerated. All patients had multi-focal primary prostate cancer detected on PSMA PET/MRI. All patients had a decline in PSMA PET SUVmax in at least one intraprostatic lesion. Two patients had an increase in SUVmax in at least one intraprostatic lesion that correlated with a resistant tumor focus on histopathology. Conclusions: NAC prior to surgery generates high rates of local tumor control with a heterogeneous response between foci. Primary resistance, identified by increasing PSMA PET SUVmax, is uncommon, however incomplete responses were observed in nearly all patients, suggesting that more cycles of treatment would improve response. PSMA PET/MRI can be used to monitor response and resistance in PC. Clinical trial information: NCT03358563.
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Affiliation(s)
| | | | - Erika Heninger
- University of Wisconsin Carbone Cancer Center, Madison, WI
| | | | | | - Wei Huang
- University of Wisconsin Madison, Madison, WI
| | - David J. Beebe
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI
| | - Hamid Emamekhoo
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Shane A. Wells
- University of Wisconsin School of Medicine and Public Health, Madison, WI
| | | | - Steve Y. Cho
- University of Wisconsin School of Medicine, Madison, WI
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Zukotynski KA, Jadvar H, Cho SY, Kim CK, Cline K, Emmenegger U, Hotte SJ, Pond GR, Winquist E. FDG and PSMA PET in metastatic castration-resistant prostate cancer (mCRPC). J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.6_suppl.23] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
23 Background: We hypothesized 18F-DCFPyL (PSMA-based tracer) and/ or 18F-FDG (glucose metabolism-based tracer) PET/CT might provide different/complementary molecular imaging information in men with mCRPC treated with abiraterone (A) or enzalutamide (E). Methods: In this prospective cohort study (MISTER trial) mCRPC patients (pts) had conventional imaging and both PSMA and FDG PET/CT prior to standard treatment with A or E, repeated after ~10 weeks on treatment. The main objective was to compare changes in PET/CT findings with conventional imaging. Median of PET maximum standardized uptake value (SUVmax) was measured across all PET avid disease sites and change in SUVmax was evaluated in the 5 hottest sites per patient. Review of PET/CT was performed by 3 experts based on consensus. Results: 36 men were enrolled between 2/2017-12/2018, of whom 28 had treatment and followup imaging. To date, 13 cases have been reviewed: mean age 71.2 years, 7 (53.9%) were ECOG=0, median duration since diagnosis of initial cancer 7.5 months and 8 (61.5%) were stage II/III. PSMA detected more skeletal metastases, positive nodes and non-skeletal, non-nodal metastases in 5/5/3 (39%/39%/23%) men, while FDG detected more non-skeletal, non-nodal metastases in 1 man. Following treatment, new lesions were seen in 3 men on both PSMA and FDG, 3 with PSMA only, and 1 with FDG only. 12 men had baseline FDG-avid disease with median SUVmax 6.5 pre-treatment and 3.8 following therapy (all men had lower SUVmax post-treatment). All 13 men had PSMA-avid disease with median SUVmax 17.6 at baseline and 18.7 post-therapy. Following treatment, 8/12 men (67%) had SUV declines ≥30% (2 had new lesions), 4 had declines of 0-30% (2 had new lesions) using FDG; at followup, 1/13 men had PSMA SUVmax declines ≥30% or more, 6 had declines of 0-30% (2 had new lesions), 5 had SUV increases of 0-30% (4 had new lesions) and 1 had >30% increase. Conclusions: In early analyses, PSMA identified more disease burden in mCRPC pts and was more avid than FDG. SUVmax for FDG declined following treatment in all men, while PSMA changes were heterogeneous. Potential prognostic value of early PSMA and FDG imaging changes on clinical outcomes will be correlated with conventional imaging along with review of remaining cases. Clinical trial information: NCT02813226.
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Affiliation(s)
| | | | - Steve Y. Cho
- University of Wisconsin School of Medicine, Madison, WI
| | | | - Kathryn Cline
- Ontario Clinical Oncology Group, Hamilton, ON, Canada
| | - Urban Emmenegger
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada
| | | | | | - Eric Winquist
- Western University and London Health Sciences Centre, London, ON, Canada
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Cho SY, Rowe SP, Jain SK, Schon LC, Yung RC, Nayfeh TA, Bingham CO, Foss CA, Nimmagadda S, Pomper MG. Evaluation of Musculoskeletal and Pulmonary Bacterial Infections With [ 124I]FIAU PET/CT. Mol Imaging 2020; 19:1536012120936876. [PMID: 32598214 PMCID: PMC7325456 DOI: 10.1177/1536012120936876] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 11/18/2022] Open
Abstract
PURPOSE Imaging is limited in the evaluation of bacterial infection. Direct imaging of in situ bacteria holds promise for noninvasive diagnosis. We investigated the ability of a bacterial thymidine kinase inhibitor ([124I]FIAU) to image pulmonary and musculoskeletal infections. METHODS Thirty-three patients were prospectively accrued: 16 with suspected musculoskeletal infection, 14 with suspected pulmonary infection, and 3 with known rheumatoid arthritis without infection. Thirty-one patients were imaged with [124I]FIAU PET/CT and 28 with [18F]FDG PET/CT. Patient histories were reviewed by an experienced clinician with subspecialty training in infectious diseases and were determined to be positive, equivocal, or negative for infection. RESULTS Sensitivity, specificity, positive-predictive value, negative-predictive value, and accuracy of [124I]FIAU PET/CT for diagnosing infection were estimated as 7.7% to 25.0%, 0.0%, 50%, 0.0%, and 20.0% to 71.4% for musculoskeletal infections and incalculable-100.0%, 51.7% to 72.7%, 0.0% to 50.0%, 100.0%, and 57.1% to 78.6% for pulmonary infections, respectively. The parameters for [18F]FDG PET/CT were 75.0% to 92.3%, 0.0%, 23.1% to 92.3%, 0.0%, and 21.4% to 85.7%, respectively, for musculoskeletal infections and incalculable to 100.0%, 0.0%, 0.0% to 18.2%, incalculable, and 0.0% to 18.2% for pulmonary infections, respectively. CONCLUSIONS The high number of patients with equivocal clinical findings prevented definitive conclusions from being made regarding the diagnostic efficacy of [124I]FIAU. Future studies using microbiology to rigorously define infection in patients and PET radiotracers optimized for image quality are needed.
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Affiliation(s)
- Steve Y. Cho
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Steven P. Rowe
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sanjay K. Jain
- Division of Infectious Diseases, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lew C. Schon
- Department of Orthopedic Surgery, MedStar Union Memorial Hospital, Baltimore, MD, USA
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Rex C. Yung
- Division of Pulmonary Medicine and Critical Care, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | - Clifton O. Bingham
- Division of Rheumatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Catherine A. Foss
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sridhar Nimmagadda
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Martin G. Pomper
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Kelly KM, Cole PD, Pei Q, Bush R, Roberts KB, Hodgson DC, McCarten KM, Cho SY, Schwartz C. Response-adapted therapy for the treatment of children with newly diagnosed high risk Hodgkin lymphoma (AHOD0831): a report from the Children's Oncology Group. Br J Haematol 2019; 187:39-48. [PMID: 31180135 DOI: 10.1111/bjh.16014] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 04/12/2019] [Indexed: 11/30/2022]
Abstract
The AHOD0831 study for paediatric patients with high risk Hodgkin lymphoma tested a response-based approach designed to limit cumulative alkylator exposure and reduce radiation volumes. Patients (Stage IIIB/IVB) received two cycles of ABVE-PC (doxorubicin, bleomycin, vincristine, etoposide, prednisone, cyclophosphamide). Rapid early responders [RER, no positron emission tomography (PET) activity above mediastinal blood pool] were consolidated with 2 cycles of ABVE-PC. Slow early responders (SER) received 2 cycles of ifosfamide/vinorelbine and 2 cycles of ABVE-PC. Radiotherapy was administered to sites of initial bulk and/or SER. By intent-to-treat analysis, 4-year second event-free survival (EFS; freedom from second relapse or malignancy) was 91·9% [95% confidence interval (CI): 86·1-95·3%], below the projected baseline of 95% (P = 0·038). Five-year first EFS and overall survival (OS) rates are 79·1% (95% CI: 71·5-84·8%) and 95% (95% CI: 88·8-97·8%). Eight of 11 SER patients with persistent PET positive lesions at the end of chemotherapy had clinical evidence of active disease (3 biopsy-proven, 5 with progressive disease or later relapses). Although this response-directed approach did not reach the ambitiously high pre-specified target for second EFS, EFS and OS rates are comparable with results of recent trials despite the reduction in radiotherapy volumes from historical involved fields. Persistent PET at end of chemotherapy identifies a cohort at an especially high risk for relapse/early progression.
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Affiliation(s)
- Kara M Kelly
- Department of Pediatric Oncology, Roswell Park Comprehensive Cancer Center, Department of Pediatrics, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY, USA
| | - Peter D Cole
- Division of Pediatric Hematology/Oncology, Robert Wood Johnson Medical School, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Qinglin Pei
- Department of Biostatistics, University of Florida, Children's Oncology Group, Statistics and Data Center, Gainesville, FL, USA
| | - Rizvan Bush
- Children's Oncology Group, Statistics and Data Center, Monrovia, CA, USA
| | - Kenneth B Roberts
- Department of Therapeutic Radiology, Yale University School of Medicine, Yale-New Haven Hospital, New Haven, CT, USA
| | - David C Hodgson
- Department of Radiation Oncology, University of Toronto, Princess Margaret Hospital, Toronto, Ontario, Canada
| | - Kathleen M McCarten
- Department of Diagnostic Imaging, Warren Alpert Medical School, Brown University, Providence, RI, USA
| | - Steve Y Cho
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, University of Wisconsin Carbone Cancer Center, Madison, WI, USA
| | - Cindy Schwartz
- Division of Pediatric Hematology, Oncology and BMT, Medical College of Wisconsin, Milwaukee, WI, USA
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Kan Z, Lal S, Ding Y, Lee JE, Lee SH, Lee SK, Yu JH, Choi YL, Kim SW, Nam SJ, Kim JY, Ram S, Powell E, Ching K, Cho SY, Bonato V, Deng S, Park WY, Rejto P, Bienkowska J, Park YH. Abstract PD5-08: Neoadjuvant chemotherapy alters the genomic landscape and immune microenvironment of breast cancers. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-pd5-08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Understanding how standard-of-care drug treatments affect tumor intrinsic biology and microenvironment is critical for elucidating drug resistance mechanisms and developing better combination therapies as well as new therapies. To characterize the effects of neoadjuvant chemotherapy (NAC) on the genome, transcriptome and tumor infiltrating leukocytes (TILs), we have conducted whole exome and whole transcriptome sequencing of a large longitudinal breast cancer cohort consisting of 146 cases and 281 paired tumor samples. In total, 52 (38%) patients achieved pathologic complete response (pCR) while 85 patients (62%) had residual disease with standard chemotherapy regimen. Tumor biopsies were collected for each patient at three time points – pre-treatment, three weeks after the first cycle of anthracycline and cyclophosphamide (AC) and at the time of surgery after 3 more cycles of AC followed by 4 cycles of taxane or taxane plus Herceptin in case of HER2+ subtype. We detected 5,955 protein-altering somatic mutations affecting 4,414 genes in pretreatment samples and 502 acquired mutations in surgery samples affecting 477 genes including 19recurrently mutated genes such as TP53 and NOTCH1. Across all subtypes, 4,346 genes were differentially expressed (DE) following NAC treatment and significantly enriched in pathways such as cell cycle, ER signaling, PI3K/mTOR, immune and metabolism. Expression-based virtual microdissection analysis indicated that NAC treatment induced an increase in the fractions of stromal and adjacent normal tissue compartment, consistent with observed reduction in tumor cellularity. To assess the NAC induced changes in the molecular landscape of these tumors, we compared molecular features including gene expression signatures, mutation prevalence and copy number alteration between three time points while adjusting for confounding effects of molecular subtype and tumor cellularity. We found that NAC induced dynamic changes in gene expression signatures associated with proliferation and immunomodulatory treatment response. We further validated the observed pattern of change in TILs through histopathology and digital imaging analyses. In pretreatment tumors, 116 genes were DE between patients with pCR vs. those with residual disease with significant enrichment in immune/inflammatory pathways. Further, pre-treatment TIL levels were found to be significantly associated with pCR, echoing previous reports in breast cancers that implicated anti-tumor immunity in mediating the efficacy of chemotherapies. Our analyses also revealed associations between NAC response and baseline genomic attributes such as genomic alterations that affect DNA damage repair pathways. Taken together, these results suggest that NAC induced a multitude of changes on the genomic landscape and immune microenvironment of breast cancers, some of which point to combination strategies with immunomodulatory therapies and therapies that target DNA damage repair.
Citation Format: Kan Z, Lal S, Ding Y, Lee JE, Lee S-H, Lee SK, Yu JH, Choi Y-l, Kim SW, Nam SJ, Kim J-Y, Ram S, Powell E, Ching K, Cho SY, Bonato V, Deng S, Park W-Y, Rejto P, Bienkowska J, Park Y-H. Neoadjuvant chemotherapy alters the genomic landscape and immune microenvironment of breast cancers [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr PD5-08.
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Affiliation(s)
- Z Kan
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - S Lal
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - Y Ding
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - JE Lee
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - S-H Lee
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - SK Lee
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - JH Yu
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - Y-l Choi
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - SW Kim
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - SJ Nam
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - J-Y Kim
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - S Ram
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - E Powell
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - K Ching
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - SY Cho
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - V Bonato
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - S Deng
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - W-Y Park
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - P Rejto
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - J Bienkowska
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
| | - Y-H Park
- Pfizer, San Diego, CA; Samsung Medical Center, Seoul, Korea
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Ni D, Jiang D, Kutyreff CJ, Lai J, Yan Y, Barnhart TE, Yu B, Im HJ, Kang L, Cho SY, Liu Z, Huang P, Engle JW, Cai W. Molybdenum-based nanoclusters act as antioxidants and ameliorate acute kidney injury in mice. Nat Commun 2018; 9:5421. [PMID: 30575745 PMCID: PMC6303396 DOI: 10.1038/s41467-018-07890-8] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 12/05/2018] [Indexed: 12/22/2022] Open
Abstract
Acute kidney injury (AKI) is a common reactive oxygen species (ROS)-related renal disease that causes numerous deaths annually, yet only supportive treatment is currently available in the clinics. Development of antioxidants with high accumulation rates in kidneys is highly desired to help prevent AKI. Here we report molybdenum-based polyoxometalate (POM) nanoclusters with preferential renal uptake as novel nano-antioxidants for kidney protection. These POM nanoclusters, with a readily variable valence state of molybdenum ions, possess the capability to scavenge detrimental ROS. Our results demonstrate that POM nanoclusters can efficiently alleviate clinical symptoms in mice subjected to AKI, as verified by dynamic PET imaging with 68Ga-EDTA, serum tests, kidney tissue staining, and biomarkers detection in the kidneys. The protective effect of POM nanoclusters against AKI in living animals suggests exploring their use for the treatment of AKI patients, as well as patients with other ROS-related diseases. There are currently no effective therapies available for acute kidney injury (AKI). Here the authors generate molybdenum-based polyoxometalate nanoclusters and show that these have preferential renal uptake and can ameliorate AKI pathology in mice by scavenging reactive oxygen species.
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Affiliation(s)
- Dalong Ni
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA
| | - Dawei Jiang
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA.,Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Christopher J Kutyreff
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA
| | - Jianhao Lai
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA.,Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China
| | - Yongjun Yan
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA
| | - Todd E Barnhart
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA
| | - Bo Yu
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA
| | - Hyung-Jun Im
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA
| | - Lei Kang
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA
| | - Steve Y Cho
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA
| | - Zhaofei Liu
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University Health Science Center, 100191, Beijing, China.
| | - Peng Huang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Jonathan W Engle
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA
| | - Weibo Cai
- Departments of Radiology and Medical Physics, University of Wisconsin, Madison, WI, 53705, USA. .,University of Wisconsin Carbone Cancer Center, Madison, WI, 53705, USA.
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49
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Im HJ, Solaiyappan M, Lee I, Bradshaw T, Daw NC, Navid F, Shulkin BL, Cho SY. Multi-level otsu method to define metabolic tumor volume in positron emission tomography. Am J Nucl Med Mol Imaging 2018; 8:373-386. [PMID: 30697457 PMCID: PMC6334209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 12/04/2018] [Indexed: 06/09/2023]
Abstract
This study was to validate reliability and clinical utility of a PET tumor segmentation method using multi-level Otsu (MO-PET) in standard National Electrical Manufacturers Association (NEMA) image quality (IQ) phantom and patients with osteosarcoma. The NEMA IQ phantom was prepared with a lesion-to-background ratio (LBR) of either 8:1, 4:1, or 1.5:1. The artificial lesions in the phantom were segmented using MO-PET, gradient-based method (PETedge), relative threshold methods, and background threshold methods. Metabolic tumor volumes (MTVs) using MO-PET and PETedge were named as MTV (MO-PET) and MTV (PETedge), respectively. Among the MTVs using multiple methods, only MTV (MO-PET) and MTV (PETedge) showed excellent agreements with the actual volume of NEMA IQ phantom across the different LBRs (intraclass correlation coefficient, ICC = 0.987, 0.985 in LBR 8:1, 0.981, 0.993 in LBR 4:1 and 0.947, 0.994 in LBR 1.5:1). Repeated measurements of MTV (MO-PET) of the primary tumors showed excellent reproducibility with ICC of 0.994 (0.989-0.997) in patients with osteosarcoma. Also, MTV (MO-PET) was found to be predictive of Event Free Survival (EFS) [Hazard ratio (95% CI) = 6.1 (2.1-17.2), log rank P = 0.0003] in patients with osteosarcoma. We have validated in NEMA IQ phantom that the MTV (MO-PET) is accurate, and importantly, stable and consistent across a range of lesion sizes and LBRs representative of clinical tumor lesions. Furthermore, MTV (MO-PET) showed excellent reproducibility and was predictive for EFS in patients with osteosarcoma.
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Affiliation(s)
- Hyung-Jun Im
- Radiology, University of WisconsinMadison, WI, USA
- Graduate School of Convergence Science and Technology, Seoul National UniversitySeoul, Republic of Korea
| | | | - Inki Lee
- Radiology, University of WisconsinMadison, WI, USA
- Department of Nuclear Medicine, Korea Cancer Center Hospital, Korea Institutes of Radiological and Medical SciencesSeoul, Republic of Korea
| | - Tyler Bradshaw
- Medical Physics, University of WisconsinMadison, WI, USA
| | - Najat C Daw
- Division of Pediatrics, MD Anderson Cancer CenterHouston, TX, USA
| | - Fariba Navid
- Department of Pediatrics, Children’s Hospital Los AngelesLos Angeles, CA, USA
- Keck School of Medicine, University of Southern CaliforniaLos Angeles, CA, USA
| | - Barry L Shulkin
- Department of Diagnostic Imaging, St. Jude Children’s Research HospitalMemphis, TN, USA
| | - Steve Y Cho
- Radiology, University of WisconsinMadison, WI, USA
- University of Wisconsin Carbone Cancer CenterMadison, WI, USA
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50
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Ko JH, Kang CI, Cornejo-Juárez P, Yeh KM, Wang CH, Cho SY, Gözel MG, Kim SH, Hsueh PR, Sekiya N, Matsumura Y, Lee DG, Cho SY, Shiratori S, Kim YJ, Chung DR, Peck KR. Fluoroquinolones versus trimethoprim-sulfamethoxazole for the treatment of Stenotrophomonas maltophilia infections: a systematic review and meta-analysis. Clin Microbiol Infect 2018; 25:546-554. [PMID: 30448331 DOI: 10.1016/j.cmi.2018.11.008] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/05/2018] [Accepted: 11/06/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND Fluoroquinolones are a popular alternative to trimethoprim-sulfamethoxazole for Stenotrophomonas maltophilia infections. OBJECTIVES To compare the effects of fluoroquinolones and trimethoprim-sulfamethoxazole on mortality of S. maltophilia infections. DATA SOURCES PubMed and EMBASE. STUDY ELIGIBILITY CRITERIA Clinical studies reporting mortality outcomes of S. maltophilia infections. PARTICIPANTS Patients with clinical infections caused by S. maltophilia. INTERVENTIONS Fluoroquinolone monotherapy in comparison with trimethoprim-sulfamethoxazole monotherapy. METHODS Systematic review with meta-analysis technique. RESULTS Seven retrospective cohort and seven case-control studies were included. Three cohort studies were designed to compare the two drugs, whereas others had other purposes. A total of 663 patients were identified, 332 of which were treated with trimethoprim-sulfamethoxazole (50.1%) and 331 with fluoroquinolones (49.9%). Three cohort studies were designed to compare the effect of the two drugs, whereas the others had other purposes. Levofloxacin was most frequently used among fluoroquinolones (187/331, 56.5%), followed by ciprofloxacin (114/331, 34.4%). The overall mortality rate was 29.6%. Using pooled ORs for the mortality of each study, fluoroquinolone treatment (OR 0.62, 95% CI 0.39-0.99) was associated with survival benefit over trimethoprim-sulfamethoxazole treatment, with low heterogeneity (I2 = 18%). Specific fluoroquinolones such as ciprofloxacin (OR 0.44, 95% CI 0.17-1.12) and levofloxacin (OR 0.78, 95% CI 0.48-1.26) did not show a significant difference in comparison with trimethoprim-sulfamethoxazole. In the sub-group analyses of adult and bacteraemic patients, significant differences in mortality were not observed between fluoroquinolones and trimethoprim-sulfamethoxazole. CONCLUSIONS Based on a meta-analysis of non-randomized studies, fluoroquinolones demonstrated comparable effects on mortality of S. maltophilia infection to trimethoprim-sulfamethoxazole, supporting the use of fluoroquinolones in clinical S. maltophilia infections. Although the pooled analysis of overall studies favoured fluoroquinolones over trimethoprim-sulfamethoxazole, the studies included were observational, and sub-group analyses of certain fluoroquinolone agents did not show statistical differences with trimethoprim-sulfamethoxazole. Randomized clinical studies are needed to address these issues.
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Affiliation(s)
- J-H Ko
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Division of Infectious Diseases, Department of Internal Medicine, Armed Forces Capital Hospital, Seongnam, Republic of Korea
| | - C-I Kang
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - P Cornejo-Juárez
- Departamento de Infectología, Instituto Nacional de Cancerología, Mexico City, Mexico
| | - K-M Yeh
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Tri-Service General Hospital, National Defence Medical Centre, Taipei, Taiwan
| | - C-H Wang
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Tri-Service General Hospital, National Defence Medical Centre, Taipei, Taiwan
| | - S Y Cho
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - M G Gözel
- Department of Microbiology Reference Laboratories, Ministry of Health, Public Health, Turkey
| | - S-H Kim
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - P-R Hsueh
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - N Sekiya
- Department of Infection Prevention and Control, Department of Clinical Laboratory, Tokyo Metropolitan Cancer and Infectious Diseases Centre Komagome Hospital, Tokyo, Japan
| | - Y Matsumura
- Kyoto University Graduate School of Medicine, Department of Clinical Laboratory Medicine, Kyoto, Japan
| | - D-G Lee
- Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, St Mary's Hospital, Seoul, Republic of Korea
| | - S-Y Cho
- Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, St Mary's Hospital, Seoul, Republic of Korea
| | - S Shiratori
- Department of Haematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Y-J Kim
- Division of Infectious Diseases, Department of Paediatrics, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - D R Chung
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - K R Peck
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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