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Hu Z, Mohan R, Chu Y, Wang X, van Rossum PS, Chen Y, Grayson ME, Gearhardt AG, Grassberger C, Zhi D, Hobbs BP, Lin SH, Cao W. Clinical Translation of a Deep Learning Model of Radiation-Induced Lymphopenia for Esophageal Cancer. Int J Part Ther 2024; 13:100624. [PMID: 39228692 PMCID: PMC11369390 DOI: 10.1016/j.ijpt.2024.100624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Accepted: 07/29/2024] [Indexed: 09/05/2024] Open
Abstract
Purpose Radiation-induced lymphopenia is a common immune toxicity that adversely impacts treatment outcomes. We report here our approach to translate a deep-learning (DL) model developed to predict severe lymphopenia risk among esophageal cancer into a strategy for incorporating the immune system as an organ-at-risk (iOAR) to mitigate the risk. Materials and Methods We conducted "virtual clinical trials" utilizing retrospective data for 10 intensity-modulated radiation therapy (IMRT) and 10 passively-scattered proton therapy (PSPT) esophageal cancer patients. For each patient, additional treatment plans of the modality other than the original were created employing standard-of-care (SOC) dose constraints. Predicted values of absolute lymphocyte count (ALC) nadir for all plans were estimated using a previously-developed DL model. The model also yielded the relative magnitudes of contributions of iOARs dosimetric factors to ALC nadir, which were used to compute iOARs dose-volume constraints, which were incorporated into optimization criteria to produce "IMRT-enhanced" and "intensity-modulated proton therapy (IMPT)-enhanced" plans. Results Model-predicted ALC nadir for the original IMRT (IMRT-SOC) and PSPT plans agreed well with actual values. IMPT-SOC showed greater immune sparing vs IMRT and PSPT. The average mean body doses were 13.10 Gy vs 7.62 Gy for IMRT-SOC vs IMPT-SOC for patients treated with IMRT-SOC; and 8.08 Gy vs 6.68 Gy for PSPT vs IMPT-SOC for patients treated with PSPT. For IMRT patients, the average predicted ALC nadir of IMRT-SOC, IMRT-enhanced, IMPT-SOC, and IMPT-enhanced was 281, 327, 351, and 392 cells/µL, respectively. For PSPT patients, the average predicted ALC nadir of PSPT, IMPT-SOC, and IMPT-enhanced was 258, 316, and 350 cells/µL, respectively. Enhanced plans achieved higher predicted ALC nadir, with an average improvement of 40.8 cells/µL (20.6%). Conclusion The proposed DL model-guided strategy to incorporate the immune system as iOAR in IMRT and IMPT optimization has the potential for radiation-induced lymphopenia mitigation. A prospective clinical trial is planned.
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Affiliation(s)
- Zongsheng Hu
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Radhe Mohan
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yan Chu
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
- The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Xiaochun Wang
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | | | - Yiqing Chen
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
- The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Madison E. Grayson
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Angela G. Gearhardt
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Clemens Grassberger
- Department of Radiation Oncology, University of Washington, Seattle, Washington, USA
| | - Degui Zhi
- The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Brian P. Hobbs
- Department of Population Health, The University of Texas at Austin, Austin, Texas, USA
| | - Steven H. Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Wenhua Cao
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Steinhelfer L, Jungmann F, Endrös L, Wenzel P, Haller B, Nickel M, Haneder E, Geisler F, Götze K, von Werder A, Eiber M, Makowski MR, Braren R, Lohöfer F. Spleen Volume Reduction Is a Reliable and Independent Biomarker for Long-Term Risk of Leukopenia Development in Peptide Receptor Radionuclide Therapy. J Nucl Med 2024; 65:1244-1249. [PMID: 38991748 DOI: 10.2967/jnumed.123.267098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 05/22/2024] [Indexed: 07/13/2024] Open
Abstract
177Lu-DOTATATE therapy is an effective treatment for advanced neuroendocrine tumors, despite its dose-limiting hematotoxicity. Herein, the significance of off-target splenic irradiation is unknown. Our study aims to identify predictive markers of peptide receptor radionuclide therapy-induced leukopenia. Methods: We retrospectively analyzed blood counts and imaging data of 88 patients with histologically confirmed, unresectable metastatic neuroendocrine tumors who received 177Lu-DOTATATE treatment at our institution from February 2009 to July 2021. Inclusion criterium was a tumor uptake equivalent to or greater than that in the liver on baseline receptor imaging. We excluded patients with less than 24 mo of follow-up and those patients who received fewer than 4 treatment cycles, additional therapies, or blood transfusions during follow-up. Results: Our study revealed absolute and relative white blood cell counts and relative spleen volume reduction as independent predictors of radiation-induced leukopenia at 24 mo. However, a 30% decline in spleen volume 12 mo after treatment most accurately predicted patients proceeding to leukopenia at 24 mo (receiver operating characteristic area under the curve of 0.91, sensitivity of 0.93, and specificity of 0.90), outperforming all other parameters by far. Conclusion: Automated splenic volume assessments demonstrated superior predictive capabilities for the development of leukopenia in patients undergoing 177Lu-DOTATATE treatment compared with conventional laboratory parameters. The reduction in spleen size proves to be a valuable, routinely available, and quantitative imaging-based biomarker for predicting radiation-induced leukopenia. This suggests potential clinical applications for risk assessment and management.
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Affiliation(s)
- Lisa Steinhelfer
- Department of Radiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany;
| | - Friederike Jungmann
- Department of Radiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Lukas Endrös
- Department of Radiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Patrick Wenzel
- Medical Clinic and Polyclinic II, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Bernhard Haller
- Institute of AI and Informatics in Medicine, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Manuel Nickel
- Institute of AI and Informatics in Medicine, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Eva Haneder
- Department of Radiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Fabian Geisler
- Medical Clinic and Polyclinic II, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Katharina Götze
- Medical Clinic and Polyclinic III, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Alexander von Werder
- Medical Clinic and Polyclinic II, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Matthias Eiber
- Department of Nuclear Medicine, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany; and
- German Cancer Consortium, a Partnership Between DKFZ and School of Medicine, Technical University of Munich, Munich, Germany
| | - Markus R Makowski
- Department of Radiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Rickmer Braren
- Department of Radiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany;
- German Cancer Consortium, a Partnership Between DKFZ and School of Medicine, Technical University of Munich, Munich, Germany
| | - Fabian Lohöfer
- Department of Radiology, School of Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
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Ma Y, Kong Y, Zhang S, Peng Y, Xu M, Zhang J, Xu H, Hong Z, Xing P, Qian J, Zhang L. The relationship between splenic dose and radiation-induced lymphopenia. JOURNAL OF RADIATION RESEARCH 2024; 65:337-349. [PMID: 38718391 PMCID: PMC11115471 DOI: 10.1093/jrr/rrae023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/11/2024] [Indexed: 05/25/2024]
Abstract
Lymphocytes, which are highly sensitive to radiation, play a crucial role in the body's defense against tumors. Radiation-induced lymphopenia has been associated with poorer outcomes in different cancer types. Despite being the largest secondary lymphoid organ, the spleen has not been officially designated as an organ at risk. This study hypothesizes a connection between spleen irradiation and lymphopenia and seeks to establish evidence-based dosage limits for the spleen. We retrospectively analyzed data from 96 patients with locally advanced gastric cancer who received postoperative chemoradiotherapy (CRT) between May 2010 and May 2017. Complete blood counts were collected before, during and after CRT. We established a model for predicting the minimum absolute lymphocyte count (Min ALC) and to investigate potential associations between spleen dosimetric variables and Min ALC. The median follow-up was 60 months. The 5-year overall survival (OS) and disease-free survival (DFS) were 65.2% and 56.8%, respectively. The median values of pre-treatment ALC, Min ALC and post-treatment ALC were 1.40 × 109, 0.23 × 109 and 0.28 × 109/L, respectively. Regression analysis confirmed that the primary tumor location, number of fractions and spleen V5 were significant predictors of Min ALC during radiation therapy. Changes in ALC (ΔALC) were identified as an independent predictor of both OS and DFS. Spleen V5 is an independent predictor for Min ALC, and the maximum dose of the spleen is associated with an increased risk of severe lymphopenia. Therefore, these doses should be restricted in clinical practice. Additionally, ΔALC can serve as a prognostic indicator for adjuvant radiotherapy in gastric cancer.
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Affiliation(s)
- Yifu Ma
- PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
| | - Yuehong Kong
- PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
| | - Shuying Zhang
- Department of Ultrasound, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
| | - Yong Peng
- PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
| | - Meiling Xu
- PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
| | - Junjun Zhang
- PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
| | - Hong Xu
- PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Department of Oncology, Changshu Hospital Affiliated to Soochow University, Shu Yuan Road No. 1, Suzhou 215500, China
| | - Zhihui Hong
- Department of Nuclear medicine, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
| | - Pengfei Xing
- PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
| | - Jianjun Qian
- PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
| | - Liyuan Zhang
- PRaG Therapy Center, Center for Cancer Diagnosis and Treatment, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- Institute of Radiotherapy and Oncology, Soochow University, San Xiang Road No. 1055, Suzhou 215004, China
- State Key Laboratory of Radiation Medicine and Protection, Soochow University, Ren Ai Road No. 199, Suzhou 215004, China
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Cortiula F, Hendriks LEL, Wijsman R, Houben R, Steens M, Debakker S, Canters R, Trovò M, Sijtsema NM, Niezink AGH, Unipan M, Urban S, Michelotti A, Dursun S, Bootsma G, Hattu D, Nuyttens JJ, Moretti E, Taasti VT, De Ruysscher D. Proton and photon radiotherapy in stage III NSCLC: Effects on hematological toxicity and adjuvant immune therapy. Radiother Oncol 2024; 190:110019. [PMID: 38000689 DOI: 10.1016/j.radonc.2023.110019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/09/2023] [Accepted: 11/11/2023] [Indexed: 11/26/2023]
Abstract
BACKGROUND AND PURPOSE Concurrent chemo-radiotherapy (CCRT) followed by adjuvant durvalumab is standard-of-care for fit patients with unresectable stage III NSCLC. Intensity modulated proton therapy (IMPT) results in different doses to organs than intensity modulated photon therapy (IMRT). We investigated whether IMPT compared to IMRT reduce hematological toxicity and whether it affects durvalumab treatment. MATERIALS AND METHODS Prospectively collected series of consecutive patients with stage III NSCLC receiving CCRT between 06.16 and 12.22 (staged with FDG-PET-CT and brain imaging) were retrospectively analyzed. The primary endpoint was the incidence of lymphopenia grade ≥ 3 in IMPT vs IMRT treated patients. RESULTS 271 patients were enrolled (IMPT: n = 71, IMRT: n = 200) in four centers. All patients received platinum-based chemotherapy. Median age: 66 years, 58 % were male, 36 % had squamous NSCLC. The incidence of lymphopenia grade ≥ 3 during CCRT was 67 % and 47 % in the IMRT and IMPT group, respectively (OR 2.2, 95 % CI: 1.0-4.9, P = 0.03). The incidence of anemia grade ≥ 3 during CCRT was 26 % and 9 % in the IMRT and IMPT group respectively (OR = 4.9, 95 % CI: 1.9-12.6, P = 0.001). IMPT was associated with a lower rate of Performance Status (PS) ≥ 2 at day 21 and 42 after CCRT (13 % vs. 26 %, P = 0.04, and 24 % vs. 39 %, P = 0.02). Patients treated with IMPT had a higher probability of receiving adjuvant durvalumab (74 % vs. 52 %, OR 0.35, 95 % CI: 0.16-0.79, P = 0.01). CONCLUSION IMPT was associated with a lower incidence of severe lymphopenia and anemia, better PS after CCRT and a higher probability of receiving adjuvant durvalumab.
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Affiliation(s)
- Francesco Cortiula
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, the Netherlands; Department of Medical Oncology, University Hospital of Udine, Udine, Italy.
| | - Lizza E L Hendriks
- Department of Pulmonary Diseases, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Robin Wijsman
- Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Ruud Houben
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Michelle Steens
- Department of Pulmonary Diseases, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Sarah Debakker
- Department of Pulmonary Diseases, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Richard Canters
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Marco Trovò
- Department of Radiation Oncology, University Hospital of Udine, Udine, Italy
| | - Nanna M Sijtsema
- Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Anne G H Niezink
- Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Mirko Unipan
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Susanna Urban
- Department of Medical Oncology, University Hospital of Udine, Udine, Italy
| | - Anna Michelotti
- Department of Medical Oncology, University Hospital of Udine, Udine, Italy
| | - Safiye Dursun
- Department of Pulmonary Diseases, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Gerben Bootsma
- Department of Pulmonary Diseases, Zuyderland Medical Centre, the Netherlands
| | - Djoya Hattu
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Joost J Nuyttens
- Department of Radiation Oncology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - Eugenia Moretti
- Medical Physics Unit, University Hospital of Udine, Udine, Italy
| | - Vicki T Taasti
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Dirk De Ruysscher
- Department of Radiation Oncology (MAASTRO), GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, the Netherlands
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Beekman C, Withrow JD, Correa Alfonso CM, Pathak SP, Dawson RJ, Carrasco-Rojas N, Sforza AR, Colon CG, Bolch WE, Grassberger C, Paganetti H. A stochastic model of blood flow to calculate blood dose during radiotherapy. Phys Med Biol 2023; 68:10.1088/1361-6560/ad02d6. [PMID: 37827171 PMCID: PMC10695181 DOI: 10.1088/1361-6560/ad02d6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 10/12/2023] [Indexed: 10/14/2023]
Abstract
Purpose. Lymphopenia is a common side effect in patients treated with radiotherapy, potentially caused by direct cell killing of circulating lymphocytes in the blood. To investigate this hypothesis, a method to assess dose to circulating lymphocytes is needed.Methods. A stochastic model to simulate systemic blood flow in the human body was developed based on a previously designed compartment model. Blood dose was obtained by superimposing the spatiotemporal distribution of blood particles with a time-varying dose rate field, and used as a surrogate for dose to circulating lymphocytes. We discuss relevant theory on compartmental modeling and how to combine it with models of explicit organ vasculature.Results. A general workflow was established which can be used for any anatomical site. Stochastic compartments can be replaced by explicit models of organ vasculatures for improved spatial resolution, and tumor compartments can be dynamically assigned. Generating a patient-specific blood flow distribution takes about one minute, fast enough to investigate the effect of varying treatment parameters such as the dose rate. Furthermore, the anatomical structures contributing most to the overall blood dose can be identified, which could potentially be used for lymphocyte-sparing treatment planning.Conclusion. The ability to report the blood dose distribution during radiotherapy is imperative to test and act upon the current paradigm that radiation-induced lymphopenia is caused by direct cell killing of lymphocytes in the blood. We have built a general model that can do so for various treatment sites. The presented framework is publicly available athttp://github.com/mghro/hedos.
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Affiliation(s)
- Chris Beekman
- Massachusetts General Hospital/Harvard Medical School, United States of America
| | | | | | | | | | | | | | | | | | - Clemens Grassberger
- Massachusetts General Hospital/Harvard Medical School, United States of America
- University of Washington, United States of America
| | - Harald Paganetti
- Massachusetts General Hospital/Harvard Medical School, United States of America
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Zhang J, Yang L, Li H, Chan JW, Lee EK, Liu M, Ma L, Liu Q, Jin JY, Fu P, Xu Z, Kong FM(S. Dosimetric Effect of Thymus and Thoracic Duct on Radiation-Induced Lymphopenia in Patients With Primary Lung Cancer Who Received Thoracic Radiation. Adv Radiat Oncol 2023; 8:101260. [PMID: 38047216 PMCID: PMC10692302 DOI: 10.1016/j.adro.2023.101260] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 04/20/2023] [Indexed: 12/04/2023] Open
Abstract
Purpose Radiation-induced lymphopenia is a well-recognized factor for tumor control and survival in patients with cancer. This study aimed to determine the role of radiation dose to the thymus and thoracic duct on radiation-induced lymphopenia. Methods and Materials Patients with primary lung cancer treated with thoracic radiation therapy between May 2015 and February 2020 with whole blood count data were eligible. Clinical characteristics, including age, gender, histology, stage, chemotherapy regimen, radiation dosimetry, and absolute lymphocyte count (ALC) were collected. The thymus and thoracic duct were contoured by one investigator for consistency and checked by one senior physician. The primary endpoint was radiation-induced decrease in lymphocytes, defined as the difference in ALC (DALC) before and after radiation therapy. Results The data of a total of 116 consecutive patients were retrospectively retrieved. Significant correlations were found between DALC and several clinical factors. These factors include stage, chemotherapy or concurrent chemoradiation, biologically effective dose (BED), mean lung dose, mean body dose, effective dose to immune cells (EDIC), mean thymus dose (MTD), and mean thoracic duct dose (MTDD) (all P < .05). Ridge regression showed that DALC = 0.0063 × BED + 0.0172 × EDIC + 0.0002 × MTD + 0.0147 × MTDD + 0.2510 (overall P = .00025 and F = 5.85). The combination model has the highest area under the curve of 0.77 (P < .001) when fitting the logistic regression model on DALC categorized as binary endpoint. The sensitivity and specificity of the combined model were 89% and 58%, respectively. Conclusions This study demonstrated for the first time that radiation doses to the thymus and thoracic duct are strongly associated with radiation-induced lymphopenia patients with lung cancer. Further validation studies are needed to implement thymus and thoracic duct as organs at risk.
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Affiliation(s)
| | | | | | | | | | - Min Liu
- Department of Respiratory Medicine, Hongkong University-Shenzhen Hospital, Shenzhen, China
| | | | | | - Jian-Yue Jin
- Department of Radiation Oncology, University Hospitals/Seidman Cancer Center and Case Comprehensive Cancer Center, Mentor, Ohio
| | - Pingfu Fu
- Department of Radiation Oncology, University Hospitals/Seidman Cancer Center and Case Comprehensive Cancer Center, Mentor, Ohio
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7
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Chen X, Tian X, Zhang X, Deng Q, Wang M, Zhou X, Xu Y, Zhou L, Zou B, Liu Y, Ao R, Lu Y, Gong Y. Pericardial irradiation dose may be strongly associated with grade 4 lymphopenia and affect prognosis in patients with locally advanced esophageal cancer receiving definitive concurrent chemoradiotherapy. Thorac Cancer 2023; 14:2735-2744. [PMID: 37519061 PMCID: PMC10518230 DOI: 10.1111/1759-7714.15057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 08/01/2023] Open
Abstract
BACKGROUND The immune system may influence prognosis, and lymphopenia is a frequent side effect of concurrent chemoradiotherapy (CCRT). Radical irradiation for locally advanced esophageal cancer (LA-EC) exposes significant vascular and heart volumes. In this study, we hypothesized that lymphopenia is linked to cardiac and pericardial doses and affects patient prognosis. METHODS AND MATERIALS We identified 190 LA-EC patients who received radical CCRT. Multivariate analysis (MVA) was performed to correlate clinical factors and dosimetric parameters with overall survival (OS). We collected lymphocyte-related variables and ratios before and during CCRT. MVA was performed to correlate hematologic toxicity with OS. The relationship between dosimetric parameters and G4 lymphopenia was determined using logistic stepwise regression. Finally, a nomogram of G4 lymphopenia was developed and validated externally. RESULTS Median follow-up time for all patients was 27.5 months. On MVA for OS, higher pericardial V30 (PV30 ) was linked to worse survival (HR: 1.013, 95% CI: 1.001-1.026, p = 0.039). The median OS stratified by PV30 > 55.3% and PV30 ≤ 55.3% was 24.0 months and 54.0 months, respectively (p = 0.004). G4 lymphopenia was shown to be linked with worse OS in the MVA of hematological toxicity with OS (HR: 2.042, 95% CI: 1.335-3.126, p = 0.001). Thirty of the 100 patients in the training set had G4 lymphopenia. Logistic stepwise regression was used to identify variables associated with G4 lymphopenia, and the final model consisted of stage-IVA (p = 0.017), platelet-to-lymphocyte ratio during CCRT (p = 0.008), Heart V50 (p = 0.046), and PV30 (p = 0.048). Finally, a nomogram predicting G4 lymphocytopenia were constructed and externally validated. The ROC curve showed an AUC for internal validation of 0.775 and external validation of 0.843. CONCLUSION Higher doses of pericardial radiation might affect LA-EC patients' prognosis by inducing G4 lymphopenia during CCRT. Further prospective studies are warranted to confirm these findings, especially in the era of immune-checkpoint inhibitor treatment.
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Affiliation(s)
- Xianyan Chen
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Xiaoman Tian
- Department of OncologySichuan Provincial People's HospitalChengduChina
| | - Xuanwei Zhang
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Qianyue Deng
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Min Wang
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Xiaojuan Zhou
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Yong Xu
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Lin Zhou
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Bingwen Zou
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Yongmei Liu
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Rui Ao
- Department of OncologySichuan Provincial People's HospitalChengduChina
| | - You Lu
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
| | - Youling Gong
- Division of Thoracic Tumor Multidisciplinary Treatment, Cancer Center and State Key Laboratory of Biotherapy, West China HospitalSichuan UniversityChengduChina
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Paganetti H. A review on lymphocyte radiosensitivity and its impact on radiotherapy. Front Oncol 2023; 13:1201500. [PMID: 37601664 PMCID: PMC10435323 DOI: 10.3389/fonc.2023.1201500] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 07/17/2023] [Indexed: 08/22/2023] Open
Abstract
It is well known that radiation therapy causes lymphopenia in patients and that this is correlated with a negative outcome. The mechanism is not well understood because radiation can have both immunostimulatory and immunosuppressive effects. How tumor dose conformation, dose fractionation, and selective lymph node irradiation in radiation therapy does affect lymphopenia and immune response is an active area of research. In addition, understanding the impact of radiation on the immune system is important for the design and interpretation of clinical trials combining radiation with immune checkpoint inhibitors, both in terms of radiation dose and treatment schedules. Although only a few percent of the total lymphocyte population are circulating, it has been speculated that their increased radiosensitivity may contribute to, or even be the primary cause of, lymphopenia. This review summarizes published data on lymphocyte radiosensitivity based on human, small animal, and in vitro studies. The data indicate differences in radiosensitivity among lymphocyte subpopulations that affect their relative contribution and thus the dynamics of the immune response. In general, B cells appear to be more radiosensitive than T cells and NK cells appear to be the most resistant. However, the reported dose-response data suggest that in the context of lymphopenia in patients, aspects other than cell death must also be considered. Not only absolute lymphocyte counts, but also lymphocyte diversity and activity are likely to be affected by radiation. Taken together, the reviewed data suggest that it is unlikely that radiation-induced cell death in lymphocytes is the sole factor in radiation-induced lymphopenia.
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Affiliation(s)
- Harald Paganetti
- Department of Radiation Oncology, Massachusetts General Hospital, Boston MA, United States
- Harvard Medical School, Boston MA, United States
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9
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El Houat Y, Massard C, Quillien V, de Crevoisier R, Castelli J. Meta-analysis and Critical Review: Association Between Radio-induced Lymphopenia and Overall Survival in Solid Cancers. Adv Radiat Oncol 2022; 8:101038. [PMID: 36561078 PMCID: PMC9763695 DOI: 10.1016/j.adro.2022.101038] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 07/12/2022] [Indexed: 12/14/2022] Open
Abstract
Purpose Immune system modulation, with the use of immune checkpoint inhibitors, has drastically changed the field of oncology. Strong preclinical data indicate that radiation therapy (RT) may enhance the response rate to such drugs via in situ vaccination, although these data do not consider immune radiotoxicity. This meta-analysis investigates whether radio-induced lymphopenia (RIL) is associated with overall survival (OS). Methods and Materials A systematic literature search and quantitative analysis were planned, conducted, and reported per the Preferred Reporting Items for Systematic Reviews and Meta-analyses and Quality of Reporting of Meta-analyses checklists. The literature from January 1990 to March 2021 was searched to identify clinical studies with OS data in patients treated with RT and presenting with lymphopenia. A random-effect model was employed for the meta-analysis. Heterogeneity was assessed using the I2 statistic. Publication bias was estimated using a P-curve analysis. Results A total of 56 studies with 13 223 patients and 11 types of cancers were selected. The mean follow-up time was 35.9 months. Over a third of patients had RIL (37.25%). After removing outlying studies (n = 14), the between-study heterogeneity variance was estimated at t2 = 0.018 (P = .01) with an I2 value of 36.0% (95% confidence interval, 6%-56%). The results showed that RIL was significantly associated with worse OS (hazard ratio: 1.70; 95% confidence interval, 1.55-1.86; P < .01; 95% prediction interval, 1.27-2.26). A subgroup analysis was performed based on the type of primary tumor, and a difference between the subgroups was found (P < .01). Based on the P-curve analysis, a significant evidential value was found, and no significant publication bias was identified among the studies. Conclusions RIL is a significant prognostic factor for mortality in virtually all solid cancers. Pooled-effect estimates indicate a significantly reduced risk of death in patients without RIL. Tailoring RT regimens to spare the immune system and updating dosimetric constraints for new organs at risk, such as major blood vessels, organs with rich blood supplies, bones, and all lymph node areas, may improve prognoses.
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10
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Morland D, Triumbari EKA, Hoog C, Sézin G, Dejust S, Cadiot G, Paris P, Papathanassiou D. Predicting subacute hematological toxicity of 177Lu-DOTATATE therapy using healthy organs' uptake on post-treatment quantitative SPECT: A pilot study. Medicine (Baltimore) 2022; 101:e32212. [PMID: 36626520 PMCID: PMC9750522 DOI: 10.1097/md.0000000000032212] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The aim is to investigate the usefulness of 177Lu-DOTA-0-Tyr3-Octreotate (DOTATATE) healthy organs' (spleen, kidneys, bone marrow) standard uptake value for the prediction of subacute hematological toxicity in patients undergoing 177Lu-DOTATATE treatment. All patients referred from January 2021 to May 2022 for 177Lu-DOTATATE treatment were retrospectively screened. For each treatment session, baseline clinical data including age, sex, weight, delay between 177Lu-DOTATATE treatment and last cold somatostatin analogue intake were collected. Mean standardized uptake value (SUVmean) of healthy organs was measured and analyzed by generalized linear mixed effect models. Outcomes (significant decrease of platelets, hemoglobin levels and neutrophils) were assessed 1 month later, considering their within-subject biological coefficient of variation, published by the European Federation of Clinical Chemistry and Laboratory Medicine. A total of 9 patients (33 treatment sessions) were included. No predictive factors were identified for platelet and neutrophil decrease. Splenic SUVmean was found to be a significant predictor of hemoglobin levels decrease. Using an optimal threshold of ≥6.22, derived sensitivity and specificity to predict hemoglobin decrease were 85.7% [46.4; 99.0] and 76.9% [57.5; 89.2] respectively with an accuracy of 82.4%. Although not significantly predictive of hematological toxicity, bone marrow SUVmean and renal SUVmean were correlated with splenic SUVmean. Quantitative single photon emission computed tomography and healthy organs analysis might help to foresee hematological subacute toxicity in patients undergoing 177Lu-DOTATATE treatment and improve patient management.
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Affiliation(s)
- David Morland
- Service de Médecine Nucléaire, Institut Godinot, Reims, France
- Laboratoire de Biophysique, UFR de Médecine, Université de Reims Champagne-Ardenne, Reims, France
- CReSTIC (Centre de Recherche en Sciences et Technologies de l’Information et de la Communication), EA 3804, Université de Reims Champagne-Ardenne, Reims, France
- Unità di Medicina Nucleare, TracerGLab, Dipartimento di Radiologia, Radioterapia ed Ematologia, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Roma, Italia
- * Correspondence: David Morland, Service de Médecine Nucléaire, Institut Godinot, 1 rue du général Koenig, Reims 51100, France (e-mail: )
| | - Elizabeth Katherine Anna Triumbari
- Unità di Medicina Nucleare, TracerGLab, Dipartimento di Radiologia, Radioterapia ed Ematologia, Fondazione Policlinico Universitario A. Gemelli, IRCCS, Roma, Italia
| | - Christopher Hoog
- Service de Radiophysique et Radioprotection, Institut Godinot, Reims, France
| | - Ghali Sézin
- Service de Médecine Nucléaire, Institut Godinot, Reims, France
| | | | - Guillaume Cadiot
- Hépatogastroentérologie, Université de Reims Champagne-Ardenne and Hôpital Robert Debré, CHU de Reims, Reims, France
| | | | - Dimitri Papathanassiou
- Service de Médecine Nucléaire, Institut Godinot, Reims, France
- Laboratoire de Biophysique, UFR de Médecine, Université de Reims Champagne-Ardenne, Reims, France
- CReSTIC (Centre de Recherche en Sciences et Technologies de l’Information et de la Communication), EA 3804, Université de Reims Champagne-Ardenne, Reims, France
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Venkatesulu B, Giridhar P, Pujari L, Chou B, Lee JH, Block AM, Upadhyay R, Welsh JS, Harkenrider MM, Krishnan S, Verma V, En Hsieh C, Pradhan S, Small W, Solanki AA. Lymphocyte sparing normal tissue effects in the clinic (LymphoTEC): A systematic review of dose constraint considerations to mitigate radiation-related lymphopenia in the era of immunotherapy. Radiother Oncol 2022; 177:81-94. [PMID: 36334694 DOI: 10.1016/j.radonc.2022.10.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/07/2022] [Accepted: 10/17/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND Radiation-related lymphopenia has been associated with suboptimal tumor control rates leading to inferior survival outcomes. To date, no standardized dose constraints are available to limit radiation dose to resident and circulating lymphocyte populations. We undertook this systemic review of the literature to provide a synopsis of the dosimetric predictors of radiation-related lymphopenia in solid malignancies. METHODOLOGY A systematic literature review of PubMed (National Institutes of Health), Cochrane Central (Cochrane collaboration), and Google Scholar was conducted with the following keywords: "radiation", "lymphopenia", "cancer", "dosimetric predictors" with an inclusion deadline of May 31, 2022. Studies that met prespecified inclusion criteria were designated either Good, Fair, or Poor Quality based on the Newcastle-Ottawa quality assessment. The dosimetric parameters derived from Good Quality studies were tabulated as LymphoTEC dose constraints. Dosimetric parameters derived from Fair and Poor-quality studies were grouped as optional. RESULTS An initial systematic search of the literature yielded 1,632 articles. After screening, a total of 48 studies met inclusion criteria and were divided into the following categories: central nervous system (CNS, 6), thoracic (11), gastrointestinal (26), gynecologic (2), head and neck, breast, and genitourinary (one each) cancers. Lung mean dose, heart mean dose, brain V25, spleen mean dose, estimated dose to immune cells, and bone marrow V10 were among the strongest predictors for severe lymphopenia related to radiotherapy. CONCLUSION Optimizing the delivery of radiation therapy to limit dose to lymphocyte-rich structures may curb the negative oncologic impact of lymphocyte depletion. The dose constraints described herein may be considered for prospective validation and future use in clinical trials to limit risk of radiation-related lymphopenia and possibly improve cancer-associated outcomes.
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Affiliation(s)
- BhanuPrasad Venkatesulu
- Loyola University Chicago, Stritch School of Medicine, Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Maywood, IL 60153, USA; Edward Hines Veteran affairs hospital, Chicago, IL, USA.
| | | | - Lincoln Pujari
- Department of Radiation Oncology, Tata memorial center, Varanasi, India
| | - Brian Chou
- Loyola University Chicago, Stritch School of Medicine, Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Maywood, IL 60153, USA; Edward Hines Veteran affairs hospital, Chicago, IL, USA
| | - Jae Han Lee
- Loyola University Chicago, Stritch School of Medicine, Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Maywood, IL 60153, USA
| | - Alec M Block
- Loyola University Chicago, Stritch School of Medicine, Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Maywood, IL 60153, USA; Edward Hines Veteran affairs hospital, Chicago, IL, USA
| | - Rituraj Upadhyay
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - James S Welsh
- Loyola University Chicago, Stritch School of Medicine, Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Maywood, IL 60153, USA; Edward Hines Veteran affairs hospital, Chicago, IL, USA
| | - Matthew M Harkenrider
- Loyola University Chicago, Stritch School of Medicine, Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Maywood, IL 60153, USA
| | - Sunil Krishnan
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, USA
| | - Vivek Verma
- Department of Radiation Oncology, MD Anderson cancer center, Houston, Texas, USA
| | - Cheng En Hsieh
- Department of Radiation Oncology, Institute for Radiological Research, Chang Gung Memorial Hospital at Linkou and Chang Gung University, Taoyuan City, Taiwan; Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston and The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States
| | - Satyajit Pradhan
- Department of Radiation Oncology, Tata memorial center, Varanasi, India
| | - William Small
- Loyola University Chicago, Stritch School of Medicine, Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Maywood, IL 60153, USA
| | - Abhishek A Solanki
- Loyola University Chicago, Stritch School of Medicine, Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Maywood, IL 60153, USA; Edward Hines Veteran affairs hospital, Chicago, IL, USA
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12
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Jiang L, Lyu Q, Abdelhamid AMH, Hui S, Sheng K. An efficient rectangular optimization method for sparse orthogonal collimator based small animal irradiation. Phys Med Biol 2022; 67:10.1088/1361-6560/ac910b. [PMID: 36084625 PMCID: PMC9595432 DOI: 10.1088/1361-6560/ac910b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/09/2022] [Indexed: 11/11/2022]
Abstract
Objective.Intensity-modulated radiotherapy (IMRT) is widely used in clinical radiotherapy, treating varying malignancies with conformal doses. As the test field for clinical translation, preclinical small animal experiments need to mimic the human radiotherapy condition, including IMRT. However, small animal IMRT is a systematic challenge due to the lack of corresponding hardware and software for miniaturized targets.Approach.The sparse orthogonal collimators (SOC) based on the direct rectangular aperture optimization (RAO) substantially simplified the hardware for miniaturization. This study investigates and evaluates a significantly improved RAO algorithm for complex mouse irradiation using SOC. Because the Kronecker product representation of the rectangular aperture is the main limitation of the computational performance, we reformulated matrix multiplication in the data fidelity term using multiplication with small matrices instead of the Kronecker product of the dose loading matrices. Solving the optimization problem was further accelerated using the Fast Iterative Shrinkage-Thresholding Algorithm (FISTA).Main results.Four mouse cases, including a liver, a brain tumor, a concave U-target, and a complex total marrow irradiation (TMI) case, were included in this study with manually delineated targets and OARs. Seven coplanar-field SOC IMRT (sIMRT) plans were compared with idealistic fluence map based IMRT (iIMRT) plans. For the first three cases with simpler and smaller targets, the differences between sIMRT plans and iIMRT plans in the planning target volumes (PTV) statistics are within 1%. For the TMI case, the sIMRT plans are superior in reducing hot spots (also termedDmax) of PTV, kidneys, lungs, heart, and bowel by 20.5%, 31.5%, 24.67%, 20.13%, and 17.78%, respectively. On average, in four cases in this study, the sIMRT plan conformity is comparable to that of the iIMRT's with lightly increased R50 and Integral Dose by 2.23% and 2.78%.Significance.The significantly improved sIMRT optimization method allows fast plan creation in under 1 min for smaller targets and makes complex TMI planning feasible while achieving comparable dosimetry to idealistic IMRT with fluence map optimization.
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Affiliation(s)
- Lu Jiang
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, United States of America
| | - Qihui Lyu
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, United States of America
| | - Amr M H Abdelhamid
- Department of Radiation Oncology, City of Hope Medical Center, Duarte, CA, United States of America
| | - Susanta Hui
- Department of Radiation Oncology, City of Hope Medical Center, Duarte, CA, United States of America
| | - Ke Sheng
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, United States of America
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13
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Dose-Volume Constraints fOr oRganS At risk In Radiotherapy (CORSAIR): An "All-in-One" Multicenter-Multidisciplinary Practical Summary. Curr Oncol 2022; 29:7021-7050. [PMID: 36290829 PMCID: PMC9600677 DOI: 10.3390/curroncol29100552] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND The safe use of radiotherapy (RT) requires compliance with dose/volume constraints (DVCs) for organs at risk (OaRs). However, the available recommendations are sometimes conflicting and scattered across a number of different documents. Therefore, the aim of this work is to provide, in a single document, practical indications on DVCs for OaRs in external beam RT available in the literature. MATERIAL AND METHODS A multidisciplinary team collected bibliographic information on the anatomical definition of OaRs, on the imaging methods needed for their definition, and on DVCs in general and in specific settings (curative RT of Hodgkin's lymphomas, postoperative RT of breast tumors, curative RT of pediatric cancers, stereotactic ablative RT of ventricular arrythmia). The information provided in terms of DVCs was graded based on levels of evidence. RESULTS Over 650 papers/documents/websites were examined. The search results, together with the levels of evidence, are presented in tabular form. CONCLUSIONS A working tool, based on collected guidelines on DVCs in different settings, is provided to help in daily clinical practice of RT departments. This could be a first step for further optimizations.
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14
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Lee SF, Yip PL, Wong A, Ng F, Koh V, Wong LC, Luk H, Ng CK, Lee FAS, Mamon HJ. Splenic irradiation contributes to grade ≥ 3 lymphopenia after adjuvant chemoradiation for stomach cancer. Clin Transl Radiat Oncol 2022; 36:83-90. [PMID: 35909437 PMCID: PMC9334913 DOI: 10.1016/j.ctro.2022.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/07/2022] [Accepted: 07/15/2022] [Indexed: 11/04/2022] Open
Abstract
Severe lymphopenia occurs commonly after adjuvant chemoradiation for gastric cancer. High splenic radiation doses increase the chances of severe lymphopenia. Severe lymphopenia predicts a poorer overall survival and higher risk of infections. The spleen is not routinely considered an organ-at-risk with dosimetric constraint. Applying dose constraints to the spleen might lower the risk of severe lymphopenia.
Introduction Adjuvant chemoradiation therapy (CRT) in gastric cancer inevitably results in an unintentional spleen radiation dose. We aimed to determine the association between the spleen radiation dose and the observed severity of lymphopenia which may affect the clinical outcomes (survival time and infection risk). Methods Patients who received adjuvant CRT for gastric cancer between January 2015 and December 2020 were analyzed. The splenic dose-volume histogram (DVH) parameters were reported as mean splenic dose (MSD) and percentage of splenic volume receiving at least × Gray (Gy). Peripheral blood counts were recorded pre- and post-CRT. The development of severe (Common Terminology Criteria for Adverse Events, version 5.0, grade ≥ 3) post-CRT lymphopenia (absolute lymphocyte count [ALC] < 0.5 K/μL) was assessed by multivariable logistic regression using patient and dosimetric factors. Overall survival (OS), recurrence-free survival (RFS), and cumulative incidence of infectious events were estimated and analyzed using the Cox model or competing risk analysis. Results Eighty-four patients with a median follow-up duration of 42 months were analyzed. Pre- and post-CRT median ALC values were 1.8 K/μL (0.9–3.1 K/μL) and 0.9 K/μL (0.0–4.9 K/μL), respectively (P < 0.001). MSD > 40 Gy (odds ratio [OR], 1.13; 95 % confidence interval [CI], 1.01–1.26; P = 0.041), sex (OR for male to female, 0.25; 95 % CI, 0.09–0.70; P = 0.008), and baseline absolute neutrophil count (OR per 1 unit increase, 1.61; 95 % CI, 1.02–2.58; P = 0.040) were associated with the development of severe post-CRT lymphopenia, which was a risk factor for poorer OS (hazard ratio [HR] = 2.47; 95 % CI, 1.24–4.92; P = 0.010) and RFS (HR = 2.27; 95 % CI, 1.16–4.46; P = 0.017). The cumulative incidence of infections was higher among severe post-CRT lymphopenia patients (2.53, 95 % CI, 1.03–6.23, P = 0.043). Conclusion High splenic radiation doses increase the odds of severe post-CRT lymphopenia, an independent predictor of lower OS and higher risks of recurrence and infections in gastric cancer patients receiving adjuvant CRT. Therefore, optimizing the splenic DVH parameters may decrease the risk of severe post-CRT lymphopenia.
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Affiliation(s)
- Shing Fung Lee
- Department of Clinical Oncology, Tuen Mun Hospital, Hospital Authority, Hong Kong.,Department of Clinical Oncology, Queen Mary Hospital, Hospital Authority, Hong Kong.,Department of Radiation Oncology, National University Cancer Institute, Singapore
| | - Pui Lam Yip
- Department of Clinical Oncology, Tuen Mun Hospital, Hospital Authority, Hong Kong
| | - Aray Wong
- Department of Clinical Oncology, Tuen Mun Hospital, Hospital Authority, Hong Kong
| | - Francesca Ng
- Department of Clinical Oncology, Tuen Mun Hospital, Hospital Authority, Hong Kong
| | - Vicky Koh
- Department of Radiation Oncology, National University Cancer Institute, Singapore
| | - Lea Choung Wong
- Department of Radiation Oncology, National University Cancer Institute, Singapore
| | - Hollis Luk
- Department of Clinical Oncology, Tuen Mun Hospital, Hospital Authority, Hong Kong
| | - Chuk Kwan Ng
- Department of Clinical Oncology, Tuen Mun Hospital, Hospital Authority, Hong Kong
| | | | - Harvey J Mamon
- Department of Radiation Oncology, Brigham and Women's Hospital/Dana Farber Cancer Institute, Boston, MA 02115, USA
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Mohan R. A review of proton therapy – Current status and future directions. PRECISION RADIATION ONCOLOGY 2022; 6:164-176. [DOI: 10.1002/pro6.1149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Radhe Mohan
- Department of Radiation Physics, MD Anderson Cancer Center Houston Texas USA
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16
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Cho Y, Kim Y, Chamseddine I, Lee WH, Kim HR, Lee IJ, Hong MH, Cho BC, Lee CG, Cho S, Kim JS, Yoon HI, Grassberger C. Lymphocyte dynamics during and after chemo-radiation correlate to dose and outcome in stage III NSCLC patients undergoing maintenance immunotherapy. Radiother Oncol 2022; 168:1-7. [PMID: 35033601 PMCID: PMC9036741 DOI: 10.1016/j.radonc.2022.01.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 12/06/2021] [Accepted: 01/06/2022] [Indexed: 12/19/2022]
Abstract
PURPOSE We investigated the dynamics of lymphocyte depletion and recovery during and after definitive concurrent chemoradiotherapy (CCRT), dose to which structures is correlated to them, and how they affect the prognosis of stage III non-small cell lung cancer (NSCLC) patients undergoing maintenance immunotherapy. METHODS AND MATERIALS In this retrospective study, absolute lymphocyte counts (ALC) of 66 patients were obtained before, during, and after CCRT. Persistent lymphopenia was defined as ALC < 500/μL at 3 months after CCRT. The impact of regional dose on lymphocyte depletion and recovery was investigated using voxel-based analysis (VBA). RESULTS Most patients (n = 65) experienced lymphopenia during CCRT: 39 patients (59.0%) had grade (G) 3+ lymphopenia. Fifty-nine patients (89.3%) recovered from treatment-related lymphopenia at 3 months after CCRT, whereas 7 (10.6%) showed persistent lymphopenia. Patient characteristics associated with persistent lymphopenia were older age and ALC before and during treatment. In multivariable Cox regression analysis, recovery from lymphopenia was identified as a significant prognostic factor for Progression Free Survival (HR 0.35, 95% CI 0.13-0.93, p = 0.034) and Overall Survival (HR 0.24, 95% CI 0.08-0.68, p = 0.007). Voxel-based analysis showed strong correlation of dose to the upper mediastinum with lymphopenia at the end of CCRT, but not at 3 months after CCRT. CONCLUSION Recovery from lymphopenia is strongly correlated to improved survival of patients undergoing CCRT and adjuvant immunotherapy, and is correlated to lymphocyte counts pre- and post-CCRT. VBA reveals high correlation of dose to large vessels to lymphopenia at the end of CCRT. Therefore, efforts should be made not only for preventing lymphocyte depletion during CCRT but also for helping lymphocyte recovery after CCRT.
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Affiliation(s)
- Yeona Cho
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Republic of Korea
| | - Yejin Kim
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea; Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, United States; Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University Health System, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ibrahim Chamseddine
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, United States
| | - Won Hee Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University Health System, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hye Ryun Kim
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ik Jae Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University Health System, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Min Hee Hong
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Byung Chul Cho
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Chang Geol Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University Health System, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seungryong Cho
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Jin Sung Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University Health System, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Hong In Yoon
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University Health System, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Clemens Grassberger
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, United States.
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Leveraging Blood-Based Diagnostics to Predict Tumor Biology and Extend the Application and Personalization of Radiotherapy in Liver Cancers. Int J Mol Sci 2022; 23:ijms23041926. [PMID: 35216045 PMCID: PMC8879105 DOI: 10.3390/ijms23041926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/01/2022] [Accepted: 02/03/2022] [Indexed: 01/27/2023] Open
Abstract
While the incidence of primary liver cancers has been increasing worldwide over the last few decades, the mortality has remained consistently high. Most patients present with underlying liver disease and have limited treatment options. In recent years, radiotherapy has emerged as a promising approach for some patients; however, the risk of radiation induced liver disease (RILD) remains a limiting factor for some patients. Thus, the discovery and validation of biomarkers to measure treatment response and toxicity is critical to make progress in personalizing radiotherapy for liver cancers. While tissue biomarkers are optimal, hepatocellular carcinoma (HCC) is typically diagnosed radiographically, making tumor tissue not readily available. Alternatively, blood-based diagnostics may be a more practical option as blood draws are minimally invasive, widely availability and may be performed serially during treatment. Possible blood-based diagnostics include indocyanine green test, plasma or serum levels of HGF or cytokines, circulating blood cells and genomic biomarkers. The albumin–bilirubin (ALBI) score incorporates albumin and bilirubin to subdivide patients with well-compensated underlying liver dysfunction (Child–Pugh score A) into two distinct groups. This review provides an overview of the current knowledge on circulating biomarkers and blood-based scores in patients with malignant liver disease undergoing radiotherapy and outlines potential future directions.
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Sakaguchi M, Maebayashi T, Aizawa T, Ishibashi N, Okada M. Association between unintentional splenic radiation and lymphopenia and high neutrophil/lymphocyte ratio after radiotherapy in patients with esophageal cancer. Transl Cancer Res 2022; 10:5076-5084. [PMID: 35116359 PMCID: PMC8798520 DOI: 10.21037/tcr-21-1765] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 11/12/2021] [Indexed: 12/24/2022]
Abstract
Background Unintentional irradiation of the spleen may reduce absolute lymphocyte count (ALC), which can affect tumor immunity. Therefore, in the present study, we evaluated spleen dose-volume parameters associated with ALC and neutrophil/lymphocyte ratio (NLR) in patients with esophageal cancer. Methods This retrospective study evaluated patients who were diagnosed with stage I–IV esophageal cancer and who received radiotherapy at Nihon University Itabashi Hospital between January 2015 and March 2020. Spleen V5, V10, V20, and V30 and mean spleen dose, which are dose-volume histogram parameters correlated with ALC and NLR, were analyzed. Results In total, 89 esophageal cancer patients with a median age of 72 years (range, 51–92 years) were included in this research. Results showed that spleen V5, V10, and V20 and mean splenic dose were significantly correlated with a low ALC. Meanwhile, a significant association was observed between spleen V5 and V10 and a high NLR (P<0.05). In the linear regression analysis, spleen V5 and V10 were remarkably associated with a low ALC (P=0.006 and 0.008). Further, a correlation was noted between spleen V5 and a high NLR (P=0.019). Spleen V5 and V10 were remarkably associated with greater than grade 3 lymphopenia (P=0.024 and P=0.031). Conclusions A correlation was observed between the irradiated volume of the spleen and ALC and NLR in patients with esophageal cancer. Furthermore, the spleen should be regarded as a high-risk organ, and the use of techniques in reducing spleen V5, V10 for the preservation of tumor immunity may be beneficial.
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Affiliation(s)
- Masakuni Sakaguchi
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Toshiya Maebayashi
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Takuya Aizawa
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Naoya Ishibashi
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
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Reddy AV, Deek MP, Jackson JF, Hill CS, Sehgal S, He J, Zheng L, Herman JM, Meyer J, Narang AK. Vertebral body and splenic irradiation are associated with lymphopenia in localized pancreatic cancer treated with stereotactic body radiation therapy. Radiat Oncol 2021; 16:242. [PMID: 34952610 PMCID: PMC8709967 DOI: 10.1186/s13014-021-01969-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 12/15/2021] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVES The purpose of this study was to determine if vertebral body and splenic dosimetry was associated with the development of lymphopenia in patients with borderline resectable (BRPC) and locally advanced pancreatic cancer (LAPC) treated with stereotactic body radiation therapy (SBRT). METHODS Patients with BRPC/LAPC who were treated with SBRT and who had lymphocyte counts and radiation treatment plans available for review were included in the study. Vertebral body levels T11-L3 and the spleen were retrospectively contoured for each patient. Univariate (UVA) and multivariable analyses (MVA) were performed to identify associations between vertebral body and splenic dosimetric parameters with absolute lymphocyte count (ALC) and grade ≥ 2 lymphopenia. Receiver operator characteristic curves were generated to identify dose-volume thresholds in predicting grade ≥ 2 lymphopenia. RESULTS A total of 132 patients were included in the study. On UVA and MVA, vertebral V15 (regression coefficient [β]: - 0.026, 95% CI - 0.044 to - 0.009, p = 0.003), vertebral V2.5 (β: - 0.011, 95% CI - 0.020 to - 0.002, p = 0.015), and log10PTV (β: - 0.15, 95% CI - 0.30 to - 0.005, p = 0.042) were associated with post-SBRT ALC. On UVA and MVA, vertebral V15 (odds ratio [OR]: 3.98, 95% CI 1.09-14.51, p = 0.027), vertebral V2.5 (OR: 1.04, 95% CI 1.00-1.09, p = 0.032), and spleen V10 (OR: 1.05, 95% CI 1.09-1.95, p = 0.004) were associated with development of grade ≥ 2 lymphopenia. Development of grade ≥ 2 lymphopenia was more likely in patients with vertebral V15 ≥ 5.84% (65.5% vs 34.0%, p = 0.002), vertebral V2.5 ≥ 48.36% (48.9% vs 23.8%, p = 0.005), and spleen V10 ≥ 4.17% (56.2% vs 26.9%, p < 0.001). CONCLUSIONS Increasing radiation dose to vertebral bodies and spleen were associated with the development of lymphopenia in BRPC/LAPC treated with SBRT. Optimization of vertebral body and splenic dosimetry may reduce the risk of developing lymphopenia and improve clinical outcomes in this population.
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Affiliation(s)
- Abhinav V Reddy
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Sidney Kimmel Cancer Center, 401 N Broadway, Baltimore, MD, 21231, USA.
| | - Matthew P Deek
- Department of Radiation Oncology, Rutgers Robert Wood Johnson Medical School, 195 Little Albany Street, New Brunswick, NJ, 08901, USA
| | - Juan F Jackson
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Sidney Kimmel Cancer Center, 401 N Broadway, Baltimore, MD, 21231, USA
| | - Colin S Hill
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Sidney Kimmel Cancer Center, 401 N Broadway, Baltimore, MD, 21231, USA
| | - Shuchi Sehgal
- Philadelphia College of Osteopathic Medicine, 4170 City Ave, Philadelphia, PA, 19131, USA
| | - Jin He
- Department of Surgery, Johns Hopkins University School of Medicine, Sidney Kimmel Cancer Center, 401 N Broadway, Baltimore, MD, 21231, USA
| | - Lei Zheng
- Department of Oncology, Johns Hopkins University School of Medicine, Sidney Kimmel Cancer Center, 401 N Broadway, Baltimore, MD, 21231, USA
| | - Joseph M Herman
- Department of Radiation Oncology, Northwell Health, 450 Lakeville Road, New Hyde Park, NY, 11042, USA
| | - Jeffrey Meyer
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Sidney Kimmel Cancer Center, 401 N Broadway, Baltimore, MD, 21231, USA
| | - Amol K Narang
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Sidney Kimmel Cancer Center, 401 N Broadway, Baltimore, MD, 21231, USA
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20
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Alexandru M, Rodica A, Dragos-Eugen G, Mihai-Teodor G. Assessing the Spleen as an Organ at Risk in Radiation Therapy and Its Relationship With Radiation-Induced Lymphopenia: A Retrospective Study and Literature Review. Adv Radiat Oncol 2021; 6:100761. [PMID: 34934857 PMCID: PMC8655387 DOI: 10.1016/j.adro.2021.100761] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 07/19/2021] [Indexed: 12/24/2022] Open
Abstract
Purpose We conducted a systematic review and a retrospective study to investigate the relationship between spleen irradiation and lymphocyte toxicity. Methods and Materials Forty-six patients diagnosed with locally advanced gastric, esophageal, and pancreatic cancer who underwent radiation therapy were included in this study. The spleen was contoured for each patient. Volumes that received 5 up to 40 Gy (5 Gy increments), minimum, mean, and maximum dose were considered along with lymphocyte count to determine toxicity. Comprehensive and systematic literature searches were performed using PubMed, SCOPUS, Cochrane Central Databases, and Google Scholar. Results Literature review on spleen unintended irradiation and lymphocyte toxicity resulted in 408 patients from 5 studies. In our study, univariate and multivariate linear regressions found an association between V15 (chemotherapy as controlling factor) and nadir lymphocyte count (P = .04) and between DMAX and nadir lymphocyte count (P = .046). An increase of 1 Gy in mean splenic dose was associated with a 1% decrease in absolute lymphocyte count at nadir. Conclusions Although there is no consensus regarding lymphopenia spleen dose volume threshold, all studies found that higher splenic dose increases the risk of lymphopenia. Our study's results suggest that spleen unintentional V15 and maximum dose irradiation were associated with lymphopenia during chemoradiation therapy.
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Affiliation(s)
- Michire Alexandru
- Prof. Dr. Al. Trestioreanu Institute of Oncology, Bucharest, Romania.,Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Anghel Rodica
- Prof. Dr. Al. Trestioreanu Institute of Oncology, Bucharest, Romania.,Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Georgescu Dragos-Eugen
- Carol Davila University of Medicine and Pharmacy, Bucharest, Romania.,Dr. I. Cantacuzino Hospital, Bucharest, Romania
| | - Georgescu Mihai-Teodor
- Prof. Dr. Al. Trestioreanu Institute of Oncology, Bucharest, Romania.,Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
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21
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Wang Q, Qiu Q, Zhang Z, Zhang J, Yang G, Liu C, Li B. Bone marrow dosimetric analysis of lymphopenia in patients with esophageal squamous cell carcinoma treated with chemoradiotherapy. Cancer Med 2021; 10:5847-5858. [PMID: 34363346 PMCID: PMC8419783 DOI: 10.1002/cam4.4131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/23/2021] [Accepted: 06/23/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND We analyzed the relationship among peripheral blood lymphocytes, exposed sternum and vertebra body bone marrow (BM), and overall survival (OS) to find BM dosimetric parameters of lymphopenia during chemoradiotherapy (CRT) for patients with esophageal squamous cell carcinoma (ESCC). METHODS We examined 476 ESCC patients from January 2012 to January 2015, all of whom received concurrent or sequential CRT. Absolute lymphocyte counts (ALC) during radiotherapy (RT) of each patient were collected from the routine workup at the following RT times: pretreatment ALC (ALC0), at 1-5, 6-10, 11-15, 16-20, and 21-25, and more than 26 sessions (called ALC1-6, respectively). The sternum and vertebral body BM were delineated in accordance with uniform standards, and the irradiated volumes were calculated by dose-volume histograms (DVH). The Kaplan-Meier method and Cox proportional hazards regression were used to analyze the survival of the patients. Comparisons of DVH were performed using the Mann-Whitney U test or two-sample t-test where appropriate. RESULTS A relative volume of sternum BM irradiated by more than 20 Gy could clearly affect the peripheral blood lymphocytes. The V20 of sternum BM and V50 of vertebra body BM were related to the OS of the patients, and the level of ALC2 (at 6-10 times of RT) could predict the outcomes of patients. The Cox regression analyses showed that the 218 patients with ALC2 ≥ 0.8 × 109 /L had a significantly higher OS (47.0 months vs. 30.9 months, p < 0.0001) than the 258 patients with ALC2 < 0.8×109 /L. CONCLUSION In patients with ESCC, the relative volume of sternum BM irradiated by more than 20 Gy was associated with lymphocytes. Patients with ALC2 ≥ 0.8 × 109 /L had a significantly higher OS. The V20 of the sternum BM, the V50 of the vertebra body BM, and the level of ALC2 were significant prognostic factors in patients with ESCC.
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Affiliation(s)
- Qian Wang
- Cheeloo College of MedicineShandong UniversityJinanChina
- Department of Radiation OncologyShandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinanChina
| | - Qingtao Qiu
- Department of Radiation OncologyShandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinanChina
| | - Zicheng Zhang
- Department of Radiation OncologyShenzhen Traditional Chinese Medicine HospitalThe Fourth Clinical Medical of Guangzhou University of Chinese MedicineShenzhenGuangdongChina
| | - Jing Zhang
- Cheeloo College of MedicineShandong UniversityJinanChina
| | - Guanghui Yang
- Cheeloo College of MedicineShandong UniversityJinanChina
| | - Chengxin Liu
- Cheeloo College of MedicineShandong UniversityJinanChina
- Department of Radiation OncologyShandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinanChina
| | - Baosheng Li
- Department of Radiation OncologyShandong Cancer Hospital and InstituteShandong First Medical University and Shandong Academy of Medical SciencesJinanChina
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22
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Ellis R, Cole AJ, O'Hare J, Whitten G, Crowther K, Harrison C. Coincidental splenic irradiation and risk of functional hyposplenism in oesophageal cancer treatment. J Med Imaging Radiat Oncol 2021; 65:925-930. [PMID: 34405578 DOI: 10.1111/1754-9485.13310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 07/31/2021] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Definitive chemoradiotherapy (dCRT) and radical radiotherapy are central to the management of distal oesophageal carcinoma. This study sought to establish whether the spleen receives a significant incidental radiation dose when treating distal oesophageal carcinoma with the standardised dCRT or radical radiotherapy doses. METHODS In this single-centre retrospective study, all patients (n = 34) with distal oesophageal cancer, treated with either dCRT or radical radiotherapy over an 18-month period using a volumetric modulated arc therapy (VMAT) planning technique, were included. The median age was 74 years old: 56% were male; 50% (n = 17) had adenocarcinoma and 41% (n = 14) had squamous carcinoma. The majority (79%) received dCRT with a prescribed dose of 50 Gy in 25 fractions while the other 21% of patients were treated with radical radiotherapy alone (55 Gy in 20 fractions). The spleen was retrospectively contoured by one physician, and the V10 Gy and mean splenic dose (MSD) were calculated using Eclipse planning software. RESULTS The median MSD was 14.4 Gy with a range of 0.75-28.3 Gy. The median V10 Gy was 62.7%. Of the cohort, 67.6% received an MSD of more than 10 Gy. CONCLUSIONS Two-thirds of the patients received a dose of more than the 10 Gy. A review of the literature suggests that higher splenic radiation doses may increase the long-term risk of infection and impact on other outcomes. This study provides important evidence that the spleen receives a significant dose of radiation when treating distal oesophageal cancer and should be considered as an organ at risk.
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Affiliation(s)
| | - Aidan J Cole
- Northern Ireland Cancer Centre, Belfast, UK.,Centre for Medical Education, Queen's University Belfast, Belfast, UK
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The Influence of Severe Radiation-Induced Lymphopenia on Overall Survival in Solid Tumors: A Systematic Review and Meta-Analysis. Int J Radiat Oncol Biol Phys 2021; 111:936-948. [PMID: 34329738 DOI: 10.1016/j.ijrobp.2021.07.1695] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/10/2021] [Accepted: 07/19/2021] [Indexed: 11/22/2022]
Abstract
PURPOSE Emerging evidence suggests a detrimental prognostic association between radiation-induced lymphopenia (RIL) and pathologic response, progression-free survival, and overall survival (OS) in patients who undergo radiation therapy for cancer. The aim of this study was to systematically review and meta-analyze the prognostic impact of RIL on OS in patients with solid tumors. METHODS AND MATERIALS PubMed/MEDLINE and Embase were systematically searched. The analysis included intervention and prognostic studies that reported on the prognostic relationship between RIL and survival in patients with solid tumors. An overall pooled adjusted hazard ratio (aHR) was calculated using a random-effects model. Subgroup analyses for different patient-, tumor-, treatment-, and study-related characteristics were performed using meta-regression. RESULTS Pooling of 21 cohorts within 20 eligible studies demonstrated a statistically significant association between OS and grade ≥3 versus grade 0-2 RIL (n = 16; pooled aHR, 1.65; 95% confidence interval [CI], 1.43-1.90) and grade 4 RIL versus grade 0-3 (n = 5; aHR, 1.53; 95% CI, 1.24-1.90). Moderate heterogeneity among aHRs was observed, mostly attributable to overestimated aHRs in 7 studies likely subject to model-overfitting. Subgroup analysis showed significant prognostic impact of grade ≥3 RIL in 4 brain tumor (aHR, 1.63; 95% CI, 1.06-2.51), 4 lung cancer (aHR, 1.52; 95% CI, 1.01-2.29), and 3 pancreatic cancer (aHR, 1.92; 95% CI, 1.10-3.36) cohorts. CONCLUSIONS This meta-analysis demonstrates a significant detrimental prognostic association between grade ≥3 lymphopenia and OS in patients receiving radiation therapy for solid tumors. This finding appears consistent for tumors of the brain, thorax, and upper abdomen and provides an imperative to further elucidate the potential survival benefit of lymphopenia-mitigating strategies.
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24
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Puukila S, Tharmalingam S, Al-Khayyat W, Peterson J, Hooker AM, Muise S, Boreham DR, Dixon DL. Transcriptomic Response in the Spleen after Whole-Body Low-Dose X-Ray Irradiation. Radiat Res 2021; 196:66-73. [PMID: 33956160 DOI: 10.1667/rade-20-00267.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 04/02/2021] [Indexed: 11/03/2022]
Abstract
As the use of medical radiation procedures continues to rise, it is imperative to further our understanding of the effects of this exposure. The spleen is not known as a particularly radiosensitive organ, although its tolerance to radiation is not well understood. Low-dose radiation exposure has been implicated in beneficial responses, particularly in cell death and DNA damage repair. In this study, adult male rats received 2, 20, 200 mGy or 4 Gy whole-body X-ray irradiation and the transcriptional response in the spleen was analyzed at 0.5, 4 and 24 h postirradiation. We analyzed expression of genes involved in apoptosis, cell cycle progression and DNA damage repair. As expected, 4 Gy irradiated animals demonstrated elevated expression of genes related to apoptosis at 0.5, 4 and 24 h postirradiation in the spleen. These animals also showed upregulation of DNA damage repair genes at 24 h postirradiation. Interestingly, the spleens of 20 mGy irradiated animals showed reduced apoptosis and cell cycle arrest compared to the spleens of sham-irradiated animals. These results further reveal that the cellular response in the spleen to whole-body irradiation differs between low- and high-dose irradiation.
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Affiliation(s)
- S Puukila
- College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia.,Laurentian University, Sudbury, Canada
| | - S Tharmalingam
- Laurentian University, Sudbury, Canada.,Northern Ontario School of Medicine, Sudbury/Thunder Bay, Canada.,Health Sciences North Research Institute, Sudbury, Canada
| | | | | | - A M Hooker
- College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia.,Centre for Radiation Research Education and Innovation, University of Adelaide, Adelaide, Australia
| | - S Muise
- McMaster University, Hamilton, Canada
| | - D R Boreham
- Northern Ontario School of Medicine, Sudbury/Thunder Bay, Canada
| | - D-L Dixon
- College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia.,Northern Ontario School of Medicine, Sudbury/Thunder Bay, Canada
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Reinartz G, Baehr A, Kittel C, Oertel M, Haverkamp U, Eich HT. Biophysical Analysis of Acute and Late Toxicity of Radiotherapy in Gastric Marginal Zone Lymphoma-Impact of Radiation Dose and Planning Target Volume. Cancers (Basel) 2021; 13:cancers13061390. [PMID: 33808548 PMCID: PMC8003236 DOI: 10.3390/cancers13061390] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/04/2021] [Accepted: 03/17/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Prospective evaluation of impact of dose and target volume in radiation planning of gastric lymphoma on organs at risk. New model parameters for calculation of normal tissue complication probabilities were developed from quality-assured cohort data. The study provides practicable data to calculate risks for neighbored organs at risk in modern radiation planning with currently lower radiation doses, representing a basis for future adaptation of previous model parameters. Abstract Successful studies on radiation therapy for gastric lymphoma led to a decrease in planning target volume (PTV) and radiation dose with low toxicities, maintaining excellent survival rates. It remains unclear as to which effects are to be expected concerning dose burden on organs at risk (OAR) by decrease in PTV vs. dose and whether a direct impact on toxicity might be expected. We evaluated 72 radiation plans, generated prospectively for a cohort of 18 patients who were treated for indolent gastric lymphoma in our department. As a prospective work, four radiation plans with different radiation doses and target volumes (40 Gy-involved field, 40 Gy-involved site, 30 Gy-involved field, 30 Gy-involved site) were generated for each patient. Mean dose burden on adjacent organs was compared between the planning groups. Cohort toxicity data served to estimate parameters for the Lyman–Kutcher–Burman (LKB) model for normal tissue complication probability (NTCP). These were used to anticipate adverse events for OAR. Literature parameters were used to estimate high-grade toxicities of OAR. Decrease of dose and/or PTV led to median dose reductions between 0.13 and 5.2 Gy, with a significant dose reduction on neighboring organs. Estimated model parameters for liver, spleen, and bowel toxicity were feasible to predict cohort toxicities. NTCP for the endpoints elevated liver enzymes, low platelet count, and diarrhea ranged between 15.9 and 22.8%, 27.6 and 32.4%, and 21.8 and 26.4% for the respective four plan variations. Field and dose reduction highly impact dose burden and NTCP for OAR during stomach radiation. Our estimated LKB model parameters offer a good approximation for low-grade toxicities in abdominal organs with modern radiation techniques.
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Patient-Specific Lymphocyte Loss Kinetics as Biomarker of Spleen Dose in Patients Undergoing Radiation Therapy for Upper Abdominal Malignancies. Adv Radiat Oncol 2021; 6:100545. [PMID: 33665481 PMCID: PMC7897770 DOI: 10.1016/j.adro.2020.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/26/2020] [Accepted: 08/03/2020] [Indexed: 12/24/2022] Open
Abstract
Purpose Radiation therapy (RT)-induced lymphopenia (RIL) is linked with inferior survival in esophageal and pancreatic cancers. Previous work has demonstrated a correlation between spleen dose and RIL risk. The present study correlates spleen dose-volume parameters with fractional lymphocyte loss rate (FLL) and total percent change in absolute lymphocyte count (%ΔALC) and suggests spleen dose constraints to reduce RIL risk. Methods and Materials This registry-based study included 140 patients who underwent RT for pancreatic (n = 67), gastroesophageal (n = 61), or biliary tract (n = 12) adenocarcinoma. Patient-specific parameters of lymphocyte loss kinetics, including FLL and %ΔALC, were calculated based on serial ALCs obtained during RT. Spearman's rho was used to correlate spleen dose-volume parameters with %ΔALC, end-treatment ALC, and FLL. Multivariable logistic regression was used to identify predictors of ≥grade 3 and grade 4 RIL. Results Spleen dose-volume parameters, including mean spleen dose (MSD), all correlated with %ΔALC, end-treatment ALC, and FLL. Controlling for baseline ALC and planning target volume (PTV), an increase in any spleen dose-volume parameter increased the odds of developing ≥grade 3 lymphopenia. Each 1-Gy increase in MSD increased the odds of ≥grade 3 RIL by 18.6%, and each 100-cm3 increase in PTV increased the odds of ≥grade 3 lymphopenia by 20%. Patients with baseline ALC < 1500 cells/μL had a high risk of ≥grade 3 RIL regardless of MSD or PTV. FLL was an equally good predictor of ≥grade 3 lymphopenia as any spleen dose-volume parameter. Conclusions In patients undergoing RT for upper abdominal malignancies, higher spleen dose is associated with higher per-fraction lymphocyte loss rates, higher total %ΔALC, and increased odds of severe lymphopenia. Spleen dose constraints should be individualized based on baseline ALC and PTV size to minimize RIL risk, although our findings require validation in larger, ideally prospective data sets.
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Wolfe AR, Siedow M, Nalin A, DiCostanzo D, Miller ED, Diaz DA, Arnett A, Cloyd JM, Dillhoff M, Ejaz A, Tsung A, Williams TM. Increasing neutrophil-to-lymphocyte ratio following radiation is a poor prognostic factor and directly correlates with splenic radiation dose in pancreatic cancer. Radiother Oncol 2021; 158:207-214. [PMID: 33667588 DOI: 10.1016/j.radonc.2021.02.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 01/29/2021] [Accepted: 02/24/2021] [Indexed: 12/24/2022]
Abstract
PURPOSE Neutrophil-to-lymphocyte ratio has been correlated with clinical outcomes in many cancers. We investigated whether the delta-NLR (ΔNLR) following radiation therapy (RT) could predict achieving surgical resection and the overall survival (OS) of patients with borderline resectable (BRPC) and locally advanced pancreatic cancer (LAPC), and whether the splenic radiation dose impacted ΔNLR. METHODS/MATERIALS 101 patients with biopsy-proven BRPC or LAPC who received induction chemotherapy followed by RT were retrospectively enrolled. Following contouring of spleens, dose-volume histograms (DVHs) for splenic dosimetric parameters were calculated. Pre- and post-RT complete blood counts (CBC) within two weeks were recorded. Delta (Δ) values were calculated by subtracting the post-RT value from the pre-RT value. Cox regression survival analysis for pre and postradiation CBC values and OS was performed. Receiver operating curves (ROC) were generated and optimal cutoff points for highest sensitivity and specificity were identified. Kaplan-Meier curves for OS were generated. RESULTS On univariate Cox regression analysis, the only significant CBC value associated with OS was ΔNLR (HR 1.06, CI 1.03-1.09, p < 0.001). On multivariate analysis, ΔNLR, age, and completed resection all significantly predicted for worse OS (p < 0.05). ΔNLR significantly predicted achieving surgical resection (p = 0.04) and the optimal cutoff point for ΔNLR was 2.5. Patients with ΔNLR < 2.5 had significantly longer OS (log rank p = 0.046). Spleen radiation dose parameters were all significantly higher in patients with a ΔNLR ≥ 2.5. Optimal radiation cutoff points to predict a ΔNLR ≥ 2.5 were splenic Dmean of 308 cGy and V5 of 10.3%. CONCLUSIONS Among patients with BRPC or LAPC who have received induction chemotherapy, elevated ΔNLR after RT significantly predicts worse OS and decreased odds of achieving resection. Furthermore, ΔNLR is correlated with higher splenic doses, suggesting the spleen may be an important organ at risk.
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Affiliation(s)
- Adam R Wolfe
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Michael Siedow
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Ansel Nalin
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Dominic DiCostanzo
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Eric D Miller
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Dayssy Alexandra Diaz
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Andrea Arnett
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Jordan M Cloyd
- Division of Surgical Oncology, Department of Surgery, Ohio State University The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Mary Dillhoff
- Division of Surgical Oncology, Department of Surgery, Ohio State University The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Aslam Ejaz
- Division of Surgical Oncology, Department of Surgery, Ohio State University The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Allan Tsung
- Division of Surgical Oncology, Department of Surgery, Ohio State University The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Terence M Williams
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA, United States.
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Mohan R, Liu AY, Brown PD, Mahajan A, Dinh J, Chung C, McAvoy S, McAleer MF, Lin SH, Li J, Ghia AJ, Zhu C, Sulman EP, de Groot JF, Heimberger AB, McGovern SL, Grassberger C, Shih H, Ellsworth S, Grosshans DR. Proton therapy reduces the likelihood of high-grade radiation-induced lymphopenia in glioblastoma patients: phase II randomized study of protons vs photons. Neuro Oncol 2021; 23:284-294. [PMID: 32750703 PMCID: PMC7906048 DOI: 10.1093/neuonc/noaa182] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND We investigated differences in radiation-induced grade 3+ lymphopenia (G3+L), defined as an absolute lymphocyte count (ALC) nadir of <500 cells/µL, after proton therapy (PT) or X-ray (photon) therapy (XRT) for patients with glioblastoma (GBM). METHODS Patients enrolled in a randomized phase II trial received PT (n = 28) or XRT (n = 56) concomitantly with temozolomide. ALC was measured before, weekly during, and within 1 month after radiotherapy. Whole-brain mean dose (WBMD) and brain dose-volume indices were extracted from planned dose distributions. Univariate and multivariate logistic regression analyses were used to identify independent predictive variables. The resulting model was evaluated using receiver operating characteristic (ROC) curve analysis. RESULTS Rates of G3+L were lower in men (7/47 [15%]) versus women (19/37 [51%]) (P < 0.001), and for PT (4/28 [14%]) versus XRT (22/56 [39%]) (P = 0.024). G3+L was significantly associated with baseline ALC, WBMD, and brain volumes receiving 5‒40 Gy(relative biological effectiveness [RBE]) or higher (ie, V5 through V40). Stepwise multivariate logistic regression analysis identified being female (odds ratio [OR] 6.2, 95% confidence interval [CI]: 1.95‒22.4, P = 0.003), baseline ALC (OR 0.18, 95% CI: 0.05‒0.51, P = 0.003), and whole-brain V20 (OR 1.07, 95% CI: 1.03‒1.13, P = 0.002) as the strongest predictors. ROC analysis yielded an area under the curve of 0.86 (95% CI: 0.79-0.94) for the final G3+L prediction model. CONCLUSIONS Sex, baseline ALC, and whole-brain V20 were the strongest predictors of G3+L for patients with GBM treated with radiation and temozolomide. PT reduced brain volumes receiving low and intermediate doses and, consequently, reduced G3+L.
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Affiliation(s)
- Radhe Mohan
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Amy Y Liu
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Paul D Brown
- Department of Radiation Oncology, Mayo Clinic Hospital, Rochester, Minnesota
| | - Anita Mahajan
- Department of Radiation Oncology, Mayo Clinic Hospital, Rochester, Minnesota
| | - Jeffrey Dinh
- Millennium Physicians Radiation Oncology, The Woodlands, Texas
| | - Caroline Chung
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sarah McAvoy
- Department of Radiation Oncology, University of Maryland, Baltimore, Maryland
| | - Mary Frances McAleer
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Steven H Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jing Li
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Amol J Ghia
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Cong Zhu
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas
- Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health, The University of Texas Health Science Center, Houston, Texas
| | - Erik P Sulman
- Department of Radiation Oncology, NYU Grossman School of Medicine, New York, New York
| | - John F de Groot
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Amy B Heimberger
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Susan L McGovern
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Clemens Grassberger
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Helen Shih
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Susannah Ellsworth
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, Indiana
| | - David R Grosshans
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
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Koukourakis MI, Giatromanolaki A. Lymphopenia and intratumoral lymphocytic balance in the era of cancer immuno-radiotherapy. Crit Rev Oncol Hematol 2021; 159:103226. [PMID: 33482348 DOI: 10.1016/j.critrevonc.2021.103226] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/15/2020] [Accepted: 01/16/2021] [Indexed: 02/08/2023] Open
Abstract
INTRODUCTION The immune response has been recognized as a major tumor-eradication component of radiotherapy. OBJECTIVE This review studies, under a clinical perspective, two contrasting effects of radiotherapy, namely immunosuppression and radiovaccination. MATERIALS AND METHODS We critically reviewed the available clinical and experimental experience on radiotherapy-induced lymphopenia. RESULTS Radiation-induced tumor damage promotes radio-vaccination, enhances cytotoxic immune responses, and potentiates immunotherapy. Nevertheless, radiotherapy induces systemic and intratumoral lymphopenia. The above effects are directly related to radiotherapy fractionation and field size/location, and tumor characteristics. DISCUSSION Hypofractionated stereotactic and accelerated irradiation better promotes radio-vaccination and produces less severe lymphopenia. Adopting cytoprotective policies and combining lympho-stimulatory agents or agents blocking regulatory lymphocyte activity are awaited to unmask the radio-vaccination effect, enhancing the efficacy immuno-radiotherapy. CONCLUSION Radiation-induced lymphopenia and immunosuppression are important issues that should be considered in the design of immuno-radiotherapy clinical trials.
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Affiliation(s)
- Michael I Koukourakis
- Department of Radiotherapy/Oncology, Medical School, Democritus University of Thrace, Alexandroupolis 68100, Greece.
| | - Alexandra Giatromanolaki
- Department of Pathology, Medical School, Democritus University of Thrace, Alexandroupolis 68100, Greece
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30
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Jiang W, Wang Y, Wargo JA, Lang FF, Kim BYS. Considerations for designing preclinical cancer immune nanomedicine studies. NATURE NANOTECHNOLOGY 2021; 16:6-15. [PMID: 33349682 PMCID: PMC8103921 DOI: 10.1038/s41565-020-00817-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 11/04/2020] [Indexed: 05/02/2023]
Abstract
Immunotherapy is known to be clinically beneficial for cancer patients and in many cases represents the new standard of care. Because of this success, the interest in integrating nanomedicine with cancer immunotherapy to further improve clinical response and toxicity profiles has grown. However, unlike conventional systemic therapies, which are directly cytotoxic to tumour cells, cancer immunotherapy relies on the host's immune system to generate tumouricidal effects. As such, proper design of cancer immune nanomedicine requires scrutiny of tumours' intrinsic and extrinsic factors that may impact host antitumour immunity. Here, we highlight key parameters that differentiate cancer immunotherapy from conventional cytotoxic agents, and we discuss their implications for designing preclinical cancer immune nanomedicine studies. We emphasize that these factors, including intratumoural genomic heterogeneity, commensal diversity, sexual dimorphism and biological ageing, which were largely ignored in traditional cancer nanomedicine experiments, should be carefully considered and incorporated into cancer immune nanomedicine investigations given their critical involvement in shaping the body's antitumour immune responses.
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Affiliation(s)
- Wen Jiang
- Department of Radiation Oncology, The University of Texas Southwestern Medical Center, Dallas, TX, USA.
| | - Yifan Wang
- Department of Radiation Oncology, The University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jennifer A Wargo
- Department of Surgical Oncology, Division of Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Frederick F Lang
- Department of Neurosurgery, Division of Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Betty Y S Kim
- Department of Neurosurgery, Division of Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
- Brain Tumor Center, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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31
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Guo J, Wang L, Wang X, Li L, Lü Y, Wang C, Hao C, Zhang J. Excessive splenic volume is an unfavorable prognostic factor in patients with non-small cell lung cancer treated with chemoradiotherapy. Medicine (Baltimore) 2020; 99:e23321. [PMID: 33285708 PMCID: PMC7717811 DOI: 10.1097/md.0000000000023321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The relationship between splenic volume and the outcome of chemoradiotherapy for lung cancer has rarely been studied or addressed. The purpose of our study was to investigate whether splenic volume was associated with prognosis in patients treated with chemoradiotherapy for advanced or locally advanced non-small cell lung cancer (NSCLC).A retrospective investigation was conducted. Finally, 202 patients met the criteria and were included in the study. All patients were divided into 2 groups according to the optimum cutoff value of splenic volume for overall survival (OS). The optimum cutoff value was identified by X-tile software, and the OS and disease-free survival (DFS) were compared between the 2 groups of patients. The impact of splenic volume and other clinical characteristics on OS and DFS was analyzed using the Kaplan-Meier method and Cox proportional hazards model. Clinical characteristics were compared using chi-square or Fisher exact tests.The median (range) of splenic volume was 156.03 (28.55-828.11) cm. The optimal cutoff value of splenic volume was 288.4 cm. For univariate analyses, high splenic volume was associated with decreased OS (P = .025) and DFS (P = .044). In multivariate analyses, splenic volume remained an independent predictor of OS as a binary dependent variable (P = .003).Excessive splenic volume was associated with decreased OS and DFS in patients with NSCLC treated with chemoradiotherapy. Splenic volume should be regarded as an independent prognostic factor for patients treated with chemoradiotherapy for advanced or locally advanced NSCLC.
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Affiliation(s)
- Jianping Guo
- Department of Radiotherapy, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan
- Department of Oncology, Maternal and Child Health Care Hospital of Zibo
| | - Lei Wang
- Department of Oncology, The Fourth People's Hospital of ZiBo City
| | - Xiaoyan Wang
- Department of Oncology, Maternal and Child Health Care Hospital of Zibo
| | - Luo Li
- Department of Science and Education, Zibo Central Hospital, Zibo, Shandong, China
| | - Yajuan Lü
- Department of Radiotherapy, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan
| | - Congcong Wang
- Department of Oncology, Maternal and Child Health Care Hospital of Zibo
| | - Chong Hao
- Department of Oncology, Maternal and Child Health Care Hospital of Zibo
| | - Jiandong Zhang
- Department of Radiotherapy, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan
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32
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Xu H, Lin M, Hu Y, Zhang L, Li Q, Zhu J, Wang S, Xi M. Lymphopenia During Definitive Chemoradiotherapy in Esophageal Squamous Cell Carcinoma: Association with Dosimetric Parameters and Patient Outcomes. Oncologist 2020; 26:e425-e434. [PMID: 32960471 DOI: 10.1002/onco.13533] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 08/26/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The objective of this study was to investigate the relationship between clinical characteristics, as well as dosimetric parameters, and the risk of treatment-related lymphopenia in esophageal squamous cell carcinoma (ESCC) treated with definitive chemoradiotherapy (CRT). MATERIALS AND METHODS Clinical characteristics and dosimetric parameters were collected from 436 patients with ESCC who received definitive CRT from 2010 through 2017. Absolute lymphocyte counts (ALCs) were obtained before, during, and 1 month after CRT. Grade 4 (G4) lymphopenia was defined as ALC <0.2 × 109 /L during CRT. Logistic regression analysis was used to evaluate the effect of each factor on predicting G4 lymphopenia. The relationship between lymphopenia and overall survival (OS) was examined, and a nomogram was developed to predict OS. RESULTS G4 lymphopenia was observed in 103 patients (23.6%) during CRT. Multivariate analysis indicated that planning target volume (PTV), lung V10 , heart V10 , performance status, and pretreatment lymphopenia were significant risk factors for G4 lymphopenia. Patients with G4 lymphopenia had significantly worse survival than those without. Based on multivariate analysis, clinical TNM stage, radiotherapy modality, pretreatment ALC, and G4 lymphopenia were predictive of OS and were incorporated into the nomogram, yielding a concordance index of 0.71. CONCLUSIONS G4 lymphopenia during definitive CRT was associated with larger PTVs, higher lung V10 and heart V10 , and worse survival. IMPLICATIONS FOR PRACTICE The purpose of this study was to investigate the relationship between clinical characteristics, as well as dosimetric parameters, and the risk of treatment-related lymphopenia in 436 patients with esophageal squamous cell carcinoma who received definitive chemoradiotherapy. Grade 4 (G4) lymphopenia was observed in 23.6% of patients during radiotherapy. G4 lymphopenia was associated with larger planning target volumes, higher lung V10 and heart V10 , and worse survival. Then, a nomogram was built based on multivariate analysis, yielding excellent performance to predict overall survival. Prospective studies are needed to investigate potential approaches for mitigating severe lymphopenia, which may ultimately convert into survival benefits.
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Affiliation(s)
- Hui Xu
- Department of Head and Neck Oncology, The Second Affiliated Hospital of Zunyi Medical University, Zunyi, People's Republic of China
| | - Maosheng Lin
- State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Guangdong Esophageal Cancer Institute, Guangzhou, People's Republic of China.,Departments of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Yingying Hu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Guangdong Esophageal Cancer Institute, Guangzhou, People's Republic of China.,Department of Nuclear Medicine, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Li Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Guangdong Esophageal Cancer Institute, Guangzhou, People's Republic of China.,Departments of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Qiaoqiao Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Guangdong Esophageal Cancer Institute, Guangzhou, People's Republic of China.,Departments of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Jinhan Zhu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Guangdong Esophageal Cancer Institute, Guangzhou, People's Republic of China.,Departments of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Shi Wang
- Department of Engineering Physics, Tsinghua University, Beijing, People's Republic of China
| | - Mian Xi
- State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Guangdong Esophageal Cancer Institute, Guangzhou, People's Republic of China.,Departments of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
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Abravan A, Faivre-Finn C, Kennedy J, McWilliam A, van Herk M. Radiotherapy-Related Lymphopenia Affects Overall Survival in Patients With Lung Cancer. J Thorac Oncol 2020; 15:1624-1635. [PMID: 32553694 DOI: 10.1016/j.jtho.2020.06.008] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Lymphopenia after radiotherapy has an adverse effect on the patient's outcome. However, the relationship between radiotherapy dose delivery and lymphopenia is not fully understood. This work used image-based data mining to identify anatomical regions where the received dose is correlated with severe lymphopenia. METHODS A total of 901 patients with lung cancer were analyzed. A Cox model was used to assess prognostic factors of overall survival (OS). Two matched groups were defined-patients with lymphopenia of grade 3 or higher and patients without lymphopenia of grade 3-based on tumor volume, baseline lymphocytes, and prescribed dose. Then, data mining was used to identify regions where dose correlates significantly with lymphopenia of grade 3 or higher. For this, dose matrices were aligned using registration of the computed tomography images to one reference patient. Mean dose distributions were obtained for the two groups, and organs of significance were detected. Dosimetric parameters from the identified organs that had the highest correlation with lymphocytes at nadir were selected. Multivariable analysis was conducted for lymphopenia of grade 3 or higher on the full lung cohort, and the model was tested on 305 patients with esophageal cancer. RESULTS Adjusted Cox regression revealed that lymphopenia of grade 3 or higher is an independent factor of OS. The anatomical regions identified were the heart, lung, and thoracic vertebrae. Dosimetric parameters for lymphopenia included thoracic vertebrae V20, mean lung dose, and mean heart dose, which were further validated in the esophageal cancer cohort. CONCLUSIONS We report that severe lymphopenia during radiotherapy is a poor prognostic factor for OS in patients with lung cancer and could be mitigated by minimizing thoracic vertebrae V20, mean lung dose, and mean heart dose to limit the irradiation of stem cells and blood pool.
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Affiliation(s)
- Azadeh Abravan
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Radiotherapy Related Research, The Christie NHS Foundation Trust, Manchester, United Kingdom.
| | - Corinne Faivre-Finn
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Radiotherapy Related Research, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Jason Kennedy
- Radiotherapy Related Research, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Alan McWilliam
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Radiotherapy Related Research, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Marcel van Herk
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Radiotherapy Related Research, The Christie NHS Foundation Trust, Manchester, United Kingdom
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34
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Steenbrugge J, De Jaeghere EA, Meyer E, Denys H, De Wever O. Splenic Hematopoietic and Stromal Cells in Cancer Progression. Cancer Res 2020; 81:27-34. [PMID: 32998999 DOI: 10.1158/0008-5472.can-20-2339] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/31/2020] [Accepted: 09/24/2020] [Indexed: 11/16/2022]
Abstract
Tumor-derived secretory factors orchestrate splenic hematopoietic and stromal cells to fuel metastasis. The spleen acts as a reservoir site for hematopoietic stem and progenitor cells, which are rapidly exploited as myeloid-derived suppressor cells at the cost of tumor-reactive lymphoid cells. Splenic erythroid progenitor cells and mesenchymal stromal cells contribute directly and indirectly to both tumor immune escape and the metastatic cascade. Animal models provide valuable mechanistic insights, but their translation to a clinical setting highlights specific challenges and open issues. In this review, we envision the exploitation of the spleen as a source for novel biomarkers and therapeutic approaches.
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Affiliation(s)
- Jonas Steenbrugge
- Laboratory of Biochemistry, Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Emiel A De Jaeghere
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
- Laboratory of Experimental Cancer Research, Department of Human Structure and Repair, Ghent University, Ghent, Belgium
- Medical Oncology, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium
- Gynecologic Pelvic Oncology Network Ghent (GYPON), Ghent, Belgium
| | - Evelyne Meyer
- Laboratory of Biochemistry, Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Hannelore Denys
- Laboratory of Experimental Cancer Research, Department of Human Structure and Repair, Ghent University, Ghent, Belgium
- Medical Oncology, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium
- Gynecologic Pelvic Oncology Network Ghent (GYPON), Ghent, Belgium
| | - Olivier De Wever
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
- Laboratory of Experimental Cancer Research, Department of Human Structure and Repair, Ghent University, Ghent, Belgium
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35
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Katz MS. Bystander Effects and Unintended Consequences: Time to Include the Spleen in Radiation Therapy Planning. Front Oncol 2020; 10:1171. [PMID: 32766156 PMCID: PMC7378780 DOI: 10.3389/fonc.2020.01171] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 06/09/2020] [Indexed: 11/22/2022] Open
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36
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Kim DW, Lee G, Lee H, Qian JM, Sanford NN, Lam MB, Tahir N, Mamon HJ. Stereotactic Body Radiation Therapy to a Splenic Metastasis in Oligoprogressive Non-small Cell Lung Cancer. Adv Radiat Oncol 2020; 5:516-521. [PMID: 32529149 PMCID: PMC7276683 DOI: 10.1016/j.adro.2019.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/18/2019] [Accepted: 12/23/2019] [Indexed: 11/01/2022] Open
Affiliation(s)
- Daniel W Kim
- Departments of Radiation Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Boston, Massachusetts
| | - Grace Lee
- Harvard Medical School, Boston, Massachusetts
| | - Hwan Lee
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jack M Qian
- Departments of Radiation Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Boston, Massachusetts
| | - Nina N Sanford
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Miranda B Lam
- Departments of Radiation Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Boston, Massachusetts
| | - Naeem Tahir
- Department of Hematology/Oncology, Dana-Farber Cancer Institute/Brigham and Women's Cancer Center, Milford, Massachusetts
| | - Harvey J Mamon
- Departments of Radiation Oncology, Dana-Farber Cancer Institute/Brigham and Women's Hospital, Boston, Massachusetts
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Newman NB, Anderson JL, Sherry AD, Osmundson EC. Dosimetric analysis of lymphopenia during chemoradiotherapy for esophageal cancer. J Thorac Dis 2020; 12:2395-2405. [PMID: 32642145 PMCID: PMC7330371 DOI: 10.21037/jtd.2020.03.93] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background Lymphopenia during chemoradiation (CRT) for esophageal cancer (EC) can adversely affect clinical outcomes. We sought to explore an association between lymphopenia and dosimetric parameters during CRT for EC. Methods After IRB approval, we retrospectively reviewed 54 patients treated with either definitive or neoadjuvant CRT for EC. Absolute lymphocyte count was recorded weekly during CRT up and graded according to the common terminology of adverse events (CTCAE) version 4.0. Dose volume histograms (DVH) parameters were collected based on vertebral body, body dose, dose to peripheral lymphocytes, and spleen. Logistic regression correlated Grade 4 toxicity with DVH parameters and linear regression analysis correlated absolute lymphocyte nadir counts with DVH parameters. Receiver operator curves (ROC) were constructed to define dosimetric thresholds. Results There were a total of 21 Grade 4 events (38.8%) of lymphopenia. Increasing vertebral volume receiving ≥10 Gy (OR 1.1, P=0.04), ≥20 Gy (OR 1.1, P=0.03), ≥30 Gy (OR 1.1, P=0.012), or mean body dose (OR 1.04, P=0.032) were correlated with Grade 4 lymphopenia on multivariable logistic regression. The dosimetric parameters most predictive of Grade 4 toxicity via a ROC analysis included absolute vertebral volume receiving 10 Gy >289 cc, 20 Gy ≥270 cc, and vertebral volumes receiving 30 Gy ≥197 cc. On multivariable linear regression increasing volume receiving 20 Gy (Beta -0.004, P=0.001), 30 Gy (Beta -0.005, P=0.0046), and mean body dose (Beta -0.002, P=0.001) all correlated with absolute lymphocyte nadir. Conclusions Lymphopenia, a known negative prognostic factor in EC, is closely correlated with the volume of vertebral bodies receiving radiation during CRT for EC. Dosimetric sparing of the vertebral bodies may result in better outcomes.
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Affiliation(s)
- Neil B Newman
- Department of Radiation Oncology, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | | | - Evan C Osmundson
- Department of Radiation Oncology, Vanderbilt University Medical Center, Nashville, TN, USA
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Lambin P, Lieverse RIY, Eckert F, Marcus D, Oberije C, van der Wiel AMA, Guha C, Dubois LJ, Deasy JO. Lymphocyte-Sparing Radiotherapy: The Rationale for Protecting Lymphocyte-rich Organs When Combining Radiotherapy With Immunotherapy. Semin Radiat Oncol 2020; 30:187-193. [PMID: 32381298 PMCID: PMC8412054 DOI: 10.1016/j.semradonc.2019.12.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
There is now strong clinical and preclinical evidence that lymphocytes, for example, CD8+ T cells, are key effectors of immunotherapy and that irradiation of large blood vessels, the heart, and lymphoid organs (including nodes, spleen, bones containing bone marrow, and thymus in children) causes transient or persistent lymphopenia. Furthermore, there is extensive clinical evidence, across multiple cancer sites and treatment modalities, that lymphopenia correlates strongly with decreased overall survival. At the moment, we lack quantitative evidence to establish the relationship between dose-volume and dose-rate to critical normal structures and lymphopenia. Therefore, we propose that data should be systematically recorded to characterise a possible quantitative relationship. This might enable us to improve the efficacy of radiotherapy and develop strategies to predict and prevent treatment-related lymphopenia. In anticipation of more quantitative data, we recommend the application of the principle of As Low As Reasonably Achievable to lymphocyte-rich regions for radiotherapy treatment planning to reduce the radiation doses to these structures, thus moving toward "Lymphocyte-Sparing Radiotherapy."
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Affiliation(s)
- Philippe Lambin
- The D-Lab and The M-Lab, Department of Precision Medicine, GROW - School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands.
| | - Relinde I Y Lieverse
- The D-Lab and The M-Lab, Department of Precision Medicine, GROW - School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Franziska Eckert
- Department of Radiation Oncology, University Hospital and Medical Faculty Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Damiënne Marcus
- The D-Lab and The M-Lab, Department of Precision Medicine, GROW - School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Cary Oberije
- The D-Lab and The M-Lab, Department of Precision Medicine, GROW - School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Alexander M A van der Wiel
- The D-Lab and The M-Lab, Department of Precision Medicine, GROW - School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Chandan Guha
- Department of Radiation Oncology, Montefiore Medical Center, Bronx, NY
| | - Ludwig J Dubois
- The D-Lab and The M-Lab, Department of Precision Medicine, GROW - School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Joseph O Deasy
- Department of Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY
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Abravan A, Eide HA, Helland Å, Malinen E. Radiotherapy-related lymphopenia in patients with advanced non-small cell lung cancer receiving palliative radiotherapy. Clin Transl Radiat Oncol 2020; 22:15-21. [PMID: 32181373 PMCID: PMC7063172 DOI: 10.1016/j.ctro.2020.02.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 02/07/2023] Open
Abstract
Risk of grade 3 lymphopenia increased with RT dose to the soft tissue and trabecular bone. High baseline CRP/Albumin was negatively associated with overall survival. Risk of lymphopenia may decrease by limiting irradiation field in palliative RT.
Background Lymphopenia during radiotherapy (RT) may have an adverse effect on treatment outcome. The aim of this study is to investigate associations between lymphopenia and RT parameters in patients with advanced lung cancer. Moreover, to investigate the prognostic role of lymphopenia, blood protein levels, and treatment and patient-related factors. Material and Methods Sixty-two advanced stage non-small cell lung cancer (NSCLC) patients were retrospectively analyzed. Blood counts were available prior to, during, and after RT (3Gyx10). For each patient, a thoracic volume of interest (VOI) –including thoracic soft tissue and trabecular bone– was obtained by applying a CT window of −500 to 1200 HU in the planning CT. Dose parameters from thoracic VOI and other regions including lungs and vertebrae were calculated. Association between risk of lymphopenia ≥ G3 (lymphocytes at nadir according to CTCAE v4.0) and therapeutic parameters was investigated using Logistic regression. Relationships between overall survival (OS) and RT dose parameters, baseline blood counts and protein levels, and clinical factors were evaluated using Log-rank and Cox models. Result Mean thoracic RT dose (odds ratio [OR] 1.67; p = 0.04), baseline lymphocytes (OR 0.65; p = 0.01), and corticosteroids use (OR 6.07; p = 0.02) were significantly associated with increased risk of lymphopenia ≥ G3 in multivariable analysis. Worse OS was associated with high mean thoracic RT dose, high CRP/Albumin, large tumor volume and corticosteroids use (p < 0.05, univariate analysis), but not with lymphopenia ≥ G3. CRP/Albumin ratio > 0.12 (hazard ratio [HR] 2.28, p = 0.03) and corticosteroid use (HR 2.52, p = 0.01) were independently associated with worse OS. Conclusion High thoracic RT dose gave a higher risk of lymphopenia ≥ G3; hence limiting dose volume to the thorax may be valuable in preventing severe lymphopenia for patients receiving palliative fractionated RT. Still, lymphopenia ≥ G3 was not associated with worse OS. however, high baseline CRP/Albumin was associated with poorer OS and may carry important information as a prognostic factor of OS in advanced NSCLC receiving palliative RT.
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Key Words
- C-reactive protein/Albumin
- CRP, C-Reactive Protein
- CRT, Chemo-radiotherapy
- CT, Computed Tomography
- CTCAE, Common Terminology Criteria for Adverse Events
- Corticosteroid
- ECOG, Eastern Cooperative Oncology Group
- GTV, Gross Tumor Volume
- HR, Hazard Ratio
- Hematologic toxicity
- Lung cancer
- Lymphopenia
- NSCLC, Non-Small Cell Lung Cancer
- OR, Odds Ratio
- OS, Overall Survival
- Overall survival
- RT, Radiotherapy
- Radiotherapy
- VOI, Volume of Interest
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Affiliation(s)
- Azadeh Abravan
- Department of Medical Physics, Oslo University Hospital, Oslo, Norway
- Department of Physics, University of Oslo, Oslo, Norway
- Corresponding author at: Department of Medical Physics, Oslo University Hospital, PO Box 4953 Nydalen, N-0424 Oslo, Norway.
| | - Hanne Astrid Eide
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Åslaug Helland
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Eirik Malinen
- Department of Medical Physics, Oslo University Hospital, Oslo, Norway
- Department of Physics, University of Oslo, Oslo, Norway
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Ultra high dose rate (35 Gy/sec) radiation does not spare the normal tissue in cardiac and splenic models of lymphopenia and gastrointestinal syndrome. Sci Rep 2019; 9:17180. [PMID: 31748640 PMCID: PMC6868225 DOI: 10.1038/s41598-019-53562-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 11/04/2019] [Indexed: 12/13/2022] Open
Abstract
Recent reports have shown that very high dose rate radiation (35–100 Gy/second) referred to as FLASH tends to spare the normal tissues while retaining the therapeutic effect on tumor. We undertook a series of experiments to assess if ultra-high dose rate of 35 Gy/second can spare the immune system in models of radiation induced lymphopenia. We compared the tumoricidal potency of ultra-high dose rate and conventional dose rate radiation using a classical clonogenic assay in murine pancreatic cancer cell lines. We also assessed the lymphocyte sparing potential in cardiac and splenic irradiation models of lymphopenia and assessed the severity of radiation-induced gastrointestinal toxicity triggered by the two dose rate regimes in vivo. Ultra-high dose rate irradiation more potently induces clonogenic cell death than conventional dose rate irradiation with a dose enhancement factor at 10% survival (DEF10) of 1.310 and 1.365 for KPC and Panc02 cell lines, respectively. Ultra-high dose rate was equally potent in depleting CD3, CD4, CD8, and CD19 lymphocyte populations in both cardiac and splenic irradiation models of lymphopenia. Radiation-induced gastrointestinal toxicity was more pronounced and mouse survival (7 days vs. 15 days, p = 0.0001) was inferior in the ultra-high dose rate arm compared to conventional dose rate arm. These results suggest that, contrary to published data in other models of radiation-induced acute and chronic toxicity, dose rates of 35 Gy/s do not protect mice from the detrimental side effects of irradiation in our models of cardiac and splenic radiation-induced lymphopenia or gastrointestinal mucosal injury.
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Woods K, Neph R, Nguyen D, Sheng K. A sparse orthogonal collimator for small animal intensity-modulated radiation therapy. Part II: hardware development and commissioning. Med Phys 2019; 46:5733-5747. [PMID: 31621091 DOI: 10.1002/mp.13870] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 10/07/2019] [Accepted: 10/09/2019] [Indexed: 12/18/2022] Open
Abstract
PURPOSE A dose-modulation device for small animal radiotherapy is required to use clinically analogous treatment techniques, which will likely increase the translatability of preclinical research results. Because the clinically used multileaf collimator (MLC) is impractical for miniaturization, we have developed a simpler, better-suited sparse orthogonal collimator (SOC) for delivering small animal intensity-modulated radiation therapy (IMRT) using a rectangular aperture optimization (RAO) treatment planning system. METHODS The SOC system was modeled in computer-aided design software and fabricated with machined tungsten leaves and three-dimensional (3D) printed leaf housing. A graphical user interface was developed for controlling and calibrating the SOC leaves, which are driven by Arduino-controlled stepper motors. A Winston-Lutz test was performed to assess mechanical alignment, and abutting field and grid dose patterns were created to analyze intra- and intercalibration leaf positioning error. Leaf transmission and penumbra were measured over the full range of gantry angles and leaf positions, respectively. Three SOC test plans were delivered, and film measurements were compared to the intended dose distributions. The differences in maximum, mean, and minimum, as well as pixelwise absolute dose differences, were compared for each structure, and a gamma analysis was performed for the target structures using criteria of 4% dose difference and 0.3 mm distance to agreement. RESULTS The Winston-Lutz test revealed maximum directional offsets between the SOC and primary collimator axes of 0.53 mm at 0° and 0.68 mm over the full 360°. Upper and lower abutting field patterns had maximum dose deviations of 18.8 ± 3.1% and 15.5 ± 2.9%, respectively, and grid patterns showed intra- and intercalibration repeatability of 93% and 91%, respectively. Extremely low midleaf (0.15 ± 0.05%) and interleaf (0.27 ± 0.22%) transmission was measured, with no significant rotational variation. The average penumbra was ~0.8 mm for all leaves at field center, with a range of 0.17 mm for all leaf positions. A highly concave test plan was delivered with a ~ 95% gamma analysis pass rate, and a realistic mouse phantom liver irradiation plan achieved a pass rate of ~98%. A highly complex dose distribution was also created with 551 SOC apertures averaging 2.4 mm in size. CONCLUSIONS A sparse orthogonal collimator was developed and commissioned, with promising preliminary dosimetry results. The SOC design, with its limited moving components and high dose-modulation resolution, is ideal for delivering high-quality small animal IMRT with our RAO-based treatment planning system.
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Affiliation(s)
- Kaley Woods
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, USA
| | - Ryan Neph
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, USA
| | - Dan Nguyen
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, USA
| | - Ke Sheng
- Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, USA
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Lymphopenia Is Associated with Gross Target Volumes and Fractions in Hepatocellular Carcinoma Patients Treated with External Beam Radiation Therapy and Also Indicates Worse Overall Survival. Can J Gastroenterol Hepatol 2019; 2019:9691067. [PMID: 31781521 PMCID: PMC6855067 DOI: 10.1155/2019/9691067] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 08/29/2019] [Indexed: 01/27/2023] Open
Abstract
PURPOSE To investigate whether lymphocyte nadir induced by radiation is associated with survival and explore its underlying risk factors in patients with hepatocellular carcinoma (HCC). METHODS Total lymphocyte counts were collected from 184 HCC patients treated by radiotherapy (RT) with complete follow-up. Associations between gross tumor volumes (GTVs) and radiation-associated parameters with lymphocyte nadir were evaluated by Pearson/Spearman correlation analysis and multiple linear regression. Kaplan-Meier analysis, log-rank test, as well as univariate and multivariate Cox regression were performed to assess the relationship between lymphocyte nadir and overall survival (OS). RESULTS GTVs and fractions were negatively related with lymphocyte nadir (p < 0.001 and p=0.001, respectively). Lymphocyte nadir and Barcelona Clinic Liver Cancer (BCLC) stage were independent prognostic factors predicting OS of HCC patients (all p < 0.001). Patients in the GTV ≤55.0 cc and fractions ≤16 groups were stratified by lymphocyte nadir, and the group with the higher lymphocyte counts (LCs) showed longer survival than the group with lower LCs (p < 0.001 and p=0.006, respectively). Patient distribution significantly differed among the RT fraction groups according to BCLC stage (p < 0.001). However, stratification of patients in the same BCLC stage by RT fractionation showed that the stereotactic body RT (SBRT) group achieved the best survival. Furthermore, there were significant differences in lymphocyte nadir among patients in the SBRT group. CONCLUSIONS A lower lymphocyte nadir during RT was associated with worse survival among HCC patients. Smaller GTVs and fractions reduced the risk of lymphopenia.
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van Rossum PSN, Deng W, Routman DM, Liu AY, Xu C, Shiraishi Y, Peters M, Merrell KW, Hallemeier CL, Mohan R, Lin SH. Prediction of Severe Lymphopenia During Chemoradiation Therapy for Esophageal Cancer: Development and Validation of a Pretreatment Nomogram. Pract Radiat Oncol 2019; 10:e16-e26. [PMID: 31369887 DOI: 10.1016/j.prro.2019.07.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/10/2019] [Accepted: 07/21/2019] [Indexed: 12/13/2022]
Abstract
INTRODUCTION In patients with esophageal cancer, occurrence of severe radiation-induced lymphopenia during chemoradiation therapy has been associated with worse progression-free and overall survival. The aim of this study was to develop and validate a pretreatment clinical nomogram for the prediction of grade 4 lymphopenia. METHODS AND MATERIALS A development set of consecutive patients who underwent chemoradiation therapy for esophageal cancer and an independent validation set of patients from another institution were identified. Grade 4 lymphopenia was defined as an absolute lymphocyte count nadir during chemoradiation therapy of <0.2 × 103/μL. Multivariable logistic regression analysis was used to create a prediction model for grade 4 lymphopenia in the development set, which was internally validated using bootstrapping and externally validated by applying the model to the validation set. The model was presented as a nomogram yielding 4 risk groups. RESULTS Among 860 included patients, 322 (37%) experienced grade 4 lymphopenia. Higher age, larger planning target volume in interaction with lower body mass index, photon- rather than proton-based therapy, and lower baseline absolute lymphocyte count were predictive in the final model (corrected c-statistic, 0.76). External validation in 144 patients, among whom 58 (40%) had grade 4 lymphopenia, yielded a c-statistic of 0.71. Four nomogram-based risk groups yielded predicted risk rates of 10%, 24%, 43%, and 70%, respectively. CONCLUSIONS A pretreatment clinical nomogram was developed and validated for the prediction of grade 4 radiation-induced lymphopenia during chemoradiation therapy for esophageal cancer. The nomogram can risk stratify individual patients suitable for lymphopenia-mitigating strategies or potential future therapeutic approaches to ultimately improve survival.
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Affiliation(s)
- Peter S N van Rossum
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas; Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Wei Deng
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - David M Routman
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Amy Y Liu
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Cai Xu
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Yutaka Shiraishi
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Max Peters
- Department of Radiation Oncology, University Medical Center Utrecht, Utrecht, Netherlands
| | | | | | - Radhe Mohan
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Steven H Lin
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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Bala S, Chugh NA, Bansal SC, Koul A. Aloe vera modulates X-ray induced hematological and splenic tissue damage in mice. Hum Exp Toxicol 2019; 38:1195-1211. [PMID: 31256688 DOI: 10.1177/0960327119860174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The present study was premeditated to examine the radioprotective effects of aqueous Aloe vera gel extract against whole-body X-ray irradiation-induced hematological alterations and splenic tissue injury in mice. Healthy male balb/c mice were divided into four groups: group 1, control; group 2, A. vera (50 mg/kg body weight) administered per oral on alternate days for 30 days (15 times); group 3, X-ray exposure of 2 Gy (0.25 Gy twice a day for four consecutive days in the last week of the experimental protocol); and group 4, A. vera + X-ray. X-ray exposure caused alterations in histoarchitecture of spleen along with enhanced clastogenic damage as assessed by micronucleus formation and apoptotic index. Irradiation caused an elevation in proinflammatory cytokines like tumor necrosis factor and interleukin-6, total leucocyte counts, neutrophil counts and decreased platelet counts along with unaltered red blood cell counts and hemoglobin. Irradiation also caused an elevation in reactive oxygen species (ROS), lipid peroxidation (LPO) levels, lactate dehydrogenase activity and alterations in enzymatic and nonenzymatic antioxidant defense mechanism in plasma and spleen. However, administration of A. vera gel extract ameliorated X-ray irradiation-induced elevation in ROS/LPO levels, histopathological and clastogenic damage. It also modulated biochemical indices, inflammatory markers, and hematological parameters. These results collectively indicated that the A. vera gel extract offers protection against whole-body X-ray exposure by virtue of its antioxidant, anti-inflammatory and anti-apoptotic potential.
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Affiliation(s)
- S Bala
- 1 Department of Biophysics, Basic Medical Sciences, Block-II, Panjab University, Chandigarh, India
| | - N A Chugh
- 1 Department of Biophysics, Basic Medical Sciences, Block-II, Panjab University, Chandigarh, India
| | - S C Bansal
- 2 Department of Radiodiagnosis and Imaging, PGIMER, Chandigarh, India
| | - A Koul
- 1 Department of Biophysics, Basic Medical Sciences, Block-II, Panjab University, Chandigarh, India
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Abdel-Magied N, Shedid SM. The effect of naringenin on the role of nuclear factor (erythroid-derived 2)-like2 (Nrf2) and haem oxygenase 1 (HO-1) in reducing the risk of oxidative stress-related radiotoxicity in the spleen of rats. ENVIRONMENTAL TOXICOLOGY 2019; 34:788-795. [PMID: 30843661 DOI: 10.1002/tox.22745] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 02/18/2019] [Accepted: 02/23/2019] [Indexed: 06/09/2023]
Abstract
The present study was to evaluate the radiomitigative effect of naringenin (NRG) on the modulation of ionizing radiation (IR)-induced spleen injury. Rats were exposed to 12 Gy (3Gy/two times/week). NRG (50mg/Kg), was orally given one hour after the first radiation dose, and daily continued during the irradiation period. Rats were sacrificed 1 day after the last dose of radiation. NRG showed a significant decrease of malondialdehyde, hydrogen peroxide with a significant elevation of superoxide dismutase, catalase and glutathione peroxidase activities and glutathione content. Moreover, NRG confirmed the intracellular defense mechanisms through activation of nuclear factor (erythroid-derived 2)-like2 (Nrf2) and haem oxygenase-1 (HO-1) levels and their protein expression. In addition, NRG deactivated the nuclear factor-κB (NF-κB) and reduced the pro-inflammatory cytokines. Further, NRG showed positive modulation in the haematological values (WBCs, RBCs, Hb, Hct% and PLt). In conclusion, these results suggested that NRG reversed the IR-induced redox-imbalance in the rat spleen.
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Affiliation(s)
- Nadia Abdel-Magied
- Radiation Biology Research Department, National Centre for Radiation Research and Technology (NCRRT), Atomic Energy Authority (AEA), Cairo, Egypt
| | - Shereen M Shedid
- Radiation Biology Research Department, National Centre for Radiation Research and Technology (NCRRT), Atomic Energy Authority (AEA), Cairo, Egypt
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Choi C, Yoo GS, Cho WK, Park HC. Optimizing radiotherapy with immune checkpoint blockade in hepatocellular carcinoma. World J Gastroenterol 2019; 25:2416-2429. [PMID: 31171886 PMCID: PMC6543238 DOI: 10.3748/wjg.v25.i20.2416] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/12/2019] [Accepted: 04/19/2019] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the fifth most common cancer, and its incidence is rapidly increasing in North America and Western Europe as well as South-East Asia. Patients with advanced stage HCC have very poor outcomes; therefore, the discovery of new innovative approaches is urgently needed. Cancer immunotherapy has become a game-changer and revolutionized cancer treatment. A comprehensive understanding of tumor-immune interactions led to the development of immune checkpoint inhibitors (ICIs) as new therapeutic tools, which have been used with great success. Targeting immune checkpoint molecules such as programmed cell death-1 (PD-1) and cytotoxic T lymphocyte-associated protein-4 (CTLA-4) reinvigorates anti-tumor immunity by restoring exhausted T cells. Despite their effectiveness in several types of cancer, of the many immune suppressive mechanisms limit the efficacy of ICI monotherapy. Radiation therapy (RT) is an essential local treatment modality for a broad range of malignancies, and it is currently gaining extensive attention as a promising combination partner with ICIs because of its ability to trigger immunogenic cell death. The efficacy of combination approaches using RT and ICIs has been well documented in numerous preclinical and clinical studies on various types of cancers but not HCC. The application of ICIs has now expanded to HCC, and RT is recognized as a promising modality in HCC. This review will highlight the current roles of PD-1 and CTLA-4 therapies and their combination with RT in the treatment of cancers, including HCC. In addition, this review will discuss the future perspectives of the combination of ICIs and RT in HCC treatment.
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Affiliation(s)
- Changhoon Choi
- Department of Radiation Oncology, Samsung Medical Center, Seoul 06351, South Korea
| | - Gyu Sang Yoo
- Department of Radiation Oncology, Samsung Medical Center, Seoul 06351, South Korea
| | - Won Kyung Cho
- Department of Radiation Oncology, Samsung Medical Center, Seoul 06351, South Korea
| | - Hee Chul Park
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, South Korea
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Zhou XL, Zhu WG, Zhu ZJ, Wang WW, Deng X, Tao WJ, Ji FZ, Tong YS. Lymphopenia in Esophageal Squamous Cell Carcinoma: Relationship to Malnutrition, Various Disease Parameters, and Response to Concurrent Chemoradiotherapy. Oncologist 2019; 24:e677-e686. [PMID: 31040254 PMCID: PMC6693723 DOI: 10.1634/theoncologist.2018-0723] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 03/18/2019] [Accepted: 04/02/2019] [Indexed: 12/16/2022] Open
Abstract
Management of esophageal squamous cell carcinoma remains challenging, because detection often occurs at advanced stages and because of the high incidence of lymph node metastasis. This article focuses on whether lymphopenia is associated with response and tumor progression in patients with advanced esophageal squamous cell carcinoma who received concurrent chemotherapy. Background. Lymphopenia occurs commonly in esophageal squamous cell carcinoma (ESCC) and may influence treatment outcomes. We aimed to examine its association with treatment response and tumor progression in patients with locally advanced ESCC treated with concurrent chemoradiotherapy (CCRT). Materials and Methods. A total of 286 patients with stage II–IVa ESCC treated with CCRT between 2015 and 2017 were analyzed. Total lymphocyte counts were assessed at baseline, weekly, and 4 weeks after CCRT. Pretreatment lymphopenia was defined as total lymphocyte count <1,000 cells per mm3 at diagnosis, and treatment‐related lymphopenia was defined as total lymphocyte count <200 cells per mm3 with 6 weeks after starting CCRT. Univariate and multivariate logistic regression methods were used to analyze factors associated treatment‐related lymphopenia and treatment response. Results. Lymphopenia was observed in 44 patients (15.4%) at initial diagnosis. Pretreatment lymphopenia was significantly associated with greater tumor length, worse T status, body mass index ≤18.5 kg/m2, and weight loss ≥3 kg in the previous 3 months. Six weeks after starting CCRT, 89 patients (31%) developed treatment‐related lymphopenia. Tumor progression and cancer‐related death were more frequently observed in treatment‐related lymphopenia group than those without (76.4% vs. 52.8% and 58.4% vs. 39.6%). A complete response (CR) was achieved in 62 patients (21.7%). In multivariate analysis, treatment‐related lymphopenia was significantly associated with lack of clinical CR, and older age, lower tumor location, greater tumor length, and larger planning target volume were independent predictors of treatment‐related lymphopenia. Conclusion. Treatment‐related lymphopenia during CCRT is an independent predictor for poor treatment response in ESCC. Implications for Practice. A total of 286 patients with locally advanced esophageal squamous cell carcinoma were treated with concurrent chemoradiotherapy (CCRT), and treatment‐related lymphopenia occurred in 31% of patients within 6 weeks from the start of CCRT. Treatment‐related lymphopenia was significantly associated with lack of treatment response, and older age, lower tumor location, greater tumor length, and larger planning target volume were independent predictors of treatment‐related lymphopenia. Lymphocyte count is an inexpensive biomarker that may be easily used by clinicians to identify patients who are most likely to benefit from CCRT.
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Affiliation(s)
- Xi-Lei Zhou
- Department of Radiation Oncology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, People's Republic of China
| | - Wei-Guo Zhu
- Department of Radiation Oncology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, People's Republic of China
| | - Zhi-Jian Zhu
- Department of Radiation Oncology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, People's Republic of China
| | - Wan-Wei Wang
- Department of Radiation Oncology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, People's Republic of China
| | - Xue Deng
- Department of Radiation Oncology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, People's Republic of China
| | - Wei-Jing Tao
- Department of Radiology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, People's Republic of China
| | - Fu-Zhi Ji
- Department of Radiation Oncology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, People's Republic of China
| | - Yu-Suo Tong
- Department of Radiation Oncology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu, People's Republic of China
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Byun HK, Kim N, Park S, Seong J. Acute severe lymphopenia by radiotherapy is associated with reduced overall survival in hepatocellular carcinoma. Strahlenther Onkol 2019; 195:1007-1017. [DOI: 10.1007/s00066-019-01462-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 03/25/2019] [Indexed: 01/27/2023]
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Deng W, Xu C, Liu A, van Rossum PS, Deng W, Liao Z, Koong AC, Mohan R, Lin SH. The relationship of lymphocyte recovery and prognosis of esophageal cancer patients with severe radiation-induced lymphopenia after chemoradiation therapy. Radiother Oncol 2019; 133:9-15. [DOI: 10.1016/j.radonc.2018.12.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/29/2018] [Accepted: 12/02/2018] [Indexed: 12/24/2022]
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Saito T, Toya R, Yoshida N, Shono T, Matsuyama T, Ninomura S, Watakabe T, Sasaki Y, Baba H, Oya N. Spleen Dose-Volume Parameters as a Predictor of Treatment-related Lymphopenia During Definitive Chemoradiotherapy for Esophageal Cancer. In Vivo 2019; 32:1519-1525. [PMID: 30348711 DOI: 10.21873/invivo.11409] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/06/2018] [Accepted: 08/07/2018] [Indexed: 12/24/2022]
Abstract
AIM Our study sought to identify dosimetric predictors of treatment-related lymphopenia during chemoradiotherapy for esophageal cancer. MATERIALS AND METHODS Patients with esophageal cancer who had received definitive chemoradiotherapy at our Institution were retrospectively assessed. The absolute volume of the spleen, body, and bone marrow that had received 5, 10, 20, and 30 Gy and the mean splenic dose were recorded. RESULTS Multivariate linear regression analysis revealed that docetaxel use and spleen dose-volume parameters (V5, V10, V20, V30, and mean splenic dose) were significant independent factors negatively influencing the absolute lymphocyte count at nadir. An increase of 1 Gy in mean splenic dose predicted a 2.9% decrease in nadir absolute lymphocyte count. Univariable logistic regression analysis showed that the mean splenic dose was a significant predictor of grade 4 lymphopenia. None of the body or bone marrow dose-volume parameters significantly predicted lymphopenia. CONCLUSION Higher spleen dose-volume parameters were associated with severe lymphopenia during chemoradiotherapy.
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Affiliation(s)
- Tetsuo Saito
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Ryo Toya
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Naoya Yoshida
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takashi Shono
- Department of Gastroenterology and Hepatology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Tomohiko Matsuyama
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Satoshi Ninomura
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Takahiro Watakabe
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
| | - Yutaka Sasaki
- Department of Gastroenterology and Hepatology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hideo Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Natsuo Oya
- Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
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