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Ronot M, Dioguardi Burgio M, Gregory J, Hentic O, Vullierme MP, Ruszniewski P, Zappa M, de Mestier L. Appropriate use of morphological imaging for assessing treatment response and disease progression of neuroendocrine tumors. Best Pract Res Clin Endocrinol Metab 2023; 37:101827. [PMID: 37858478 DOI: 10.1016/j.beem.2023.101827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Neuroendocrine tumors (NETs) are relatively rare neoplasms displaying heterogeneous clinical behavior, ranging from indolent to aggressive forms. Patients diagnosed with NETs usually receive a varied array of treatments, including somatostatin analogs, locoregional treatments (ablation, intra-arterial therapy), cytotoxic chemotherapy, peptide receptor radionuclide therapy (PRRT), and targeted therapies. To maximize therapeutic efficacy while limiting toxicity (both physical and economic), there is a need for accurate and reliable tools to monitor disease evolution and progression and to assess the effectiveness of these treatments. Imaging morphological methods, primarily relying on computed tomography (CT) and magnetic resonance imaging (MRI), are indispensable modalities for the initial evaluation and continuous monitoring of patients with NETs, therefore playing a pivotal role in gauging the response to treatment. The primary goal of assessing tumor response is to anticipate and weigh the benefits of treatments, especially in terms of survival gain. The World Health Organization took the pioneering step of introducing assessment criteria based on cross-sectional imaging. This initial proposal standardized the measurement of lesion sizes, laying the groundwork for subsequent criteria. The Response Evaluation Criteria in Solid Tumors (RECIST) subsequently refined and enhanced these standards, swiftly gaining acceptance within the oncology community. New treatments were progressively introduced, targeting specific features of NETs (such as tumor vascularization or expression of specific receptors), and achieving significant qualitative changes within tumors, although associated with minimal or paradoxical effects on tumor size. Several alternative criteria, adapted from those used in other cancer types and focusing on tumor viability, the slow growth of NETs, or refining the existing size-based RECIST criteria, have been proposed in NETs. This review article aims to describe and discuss the optimal utilization of CT and MRI for assessing the response of NETs to treatment; it provides a comprehensive overview of established and emerging criteria for evaluating tumor response, along with comparative analyses. Molecular imaging will not be addressed here and is covered in a dedicated article within this special issue.
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Affiliation(s)
- Maxime Ronot
- Université Paris-Cité, Centre de Recherche sur l'Inflammation, INSERM UMR1149, FHU MOSAIC, Paris, France; Université Paris-Cité, Department of Radiology, Beaujon Hospital (APHP.Nord), Clichy, France.
| | - Marco Dioguardi Burgio
- Université Paris-Cité, Centre de Recherche sur l'Inflammation, INSERM UMR1149, FHU MOSAIC, Paris, France; Université Paris-Cité, Department of Radiology, Beaujon Hospital (APHP.Nord), Clichy, France
| | - Jules Gregory
- Université Paris-Cité, Centre de Recherche sur l'Inflammation, INSERM UMR1149, FHU MOSAIC, Paris, France; Université Paris-Cité, Department of Radiology, Beaujon Hospital (APHP.Nord), Clichy, France
| | - Olivia Hentic
- Université Paris-Cité, Department of Pancreatology and Digestive Oncology, Beaujon Hospital (APHP.Nord), Clichy, France
| | | | - Philippe Ruszniewski
- Université Paris-Cité, Centre de Recherche sur l'Inflammation, INSERM UMR1149, FHU MOSAIC, Paris, France; Université Paris-Cité, Department of Pancreatology and Digestive Oncology, Beaujon Hospital (APHP.Nord), Clichy, France
| | - Magaly Zappa
- Department of Radiology, Cayenne University Hospital, Cayenne, Guyanne, France
| | - Louis de Mestier
- Université Paris-Cité, Centre de Recherche sur l'Inflammation, INSERM UMR1149, FHU MOSAIC, Paris, France; Université Paris-Cité, Department of Pancreatology and Digestive Oncology, Beaujon Hospital (APHP.Nord), Clichy, France
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de Mestier L, Resche-Rigon M, Dromain C, Lamarca A, La Salvia A, de Baker L, Fehrenbach U, Pusceddu S, Colao A, Borbath I, de Haas R, Rinzivillo M, Zerbi A, Funicelli L, de Herder WW, Selberherr A, Wagner AD, Manoharan P, De Cima A, Lybaert W, Jann H, Prinzi N, Faggiano A, Annet L, Walenkamp A, Panzuto F, Pedicini V, Pitoni MG, Siebenhuener A, Mayerhoefer ME, Ruszniewski P, Vullierme MP. Proposal of early CT morphological criteria for response of liver metastases to systemic treatments in gastroenteropancreatic neuroendocrine tumors: Alternatives to RECIST. J Neuroendocrinol 2023; 35:e13311. [PMID: 37345276 DOI: 10.1111/jne.13311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 04/10/2023] [Accepted: 04/28/2023] [Indexed: 06/23/2023]
Abstract
RECIST 1.1 criteria are commonly used with computed tomography (CT) to evaluate the efficacy of systemic treatments in patients with neuroendocrine tumors (NETs) and liver metastases (LMs), but their relevance is questioned in this setting. We aimed to explore alternative criteria using different numbers of measured LMs and thresholds of size and density variation. We retrospectively studied patients with advanced pancreatic or small intestine NETs with LMs, treated with systemic treatment in the first-and/or second-line, without early progression, in 14 European expert centers. We compared time to treatment failure (TTF) between responders and non-responders according to various criteria defined by 0%, 10%, 20% or 30% decrease in the sum of LM size, and/or by 10%, 15% or 20% decrease in LM density, measured on two, three or five LMs, on baseline (≤1 month before treatment initiation) and first revaluation (≤6 months) contrast-enhanced CT scans. Multivariable Cox proportional hazard models were performed to adjust the association between response criteria and TTF on prognostic factors. We included 129 systemic treatments (long-acting somatostatin analogs 41.9%, chemotherapy 26.4%, targeted therapies 31.8%), administered as first-line (53.5%) or second-line therapies (46.5%) in 91 patients. A decrease ≥10% in the size of three LMs was the response criterion that best predicted prolonged TTF, with significance at multivariable analysis (HR 1.90; 95% CI: 1.06-3.40; p = .03). Conversely, response defined by RECIST 1.1 did not predict prolonged TTF (p = .91), and neither did criteria based on changes in LM density. A ≥10% decrease in size of three LMs could be a more clinically relevant criterion than the current 30% threshold utilized by RECIST 1.1 for the evaluation of treatment efficacy in patients with advanced NETs. Its implementation in clinical trials is mandatory for prospective validation. Criteria based on changes in LM density were not predictive of treatment efficacy. CLINICAL TRIAL REGISTRATION: Registered at CNIL-CERB, Assistance publique hopitaux de Paris as "E-NETNET-L-E-CT" July 2018. No number was assigned. Approved by the Medical Ethics Review Board of University Medical Center Groningen.
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Affiliation(s)
- Louis de Mestier
- Department of Pancreatology and Digestive Oncology, Université Paris-Cité, INSERM U1149, Beaujon University Hospital, Clichy, France
| | - Matthieu Resche-Rigon
- Department of Epidemiology and Biostatistics, Université Paris-Cité, Saint-Louis Hospital, Paris, France
| | - Clarisse Dromain
- Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Angela Lamarca
- Department of Medical Oncology, The Christie Hospital, Manchester, UK
| | - Anna La Salvia
- Department of Medical Oncology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Lesley de Baker
- Department of Radiology, Universitair Ziekenhuis Antwerpen, Edegem, Belgium
| | - Uli Fehrenbach
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sara Pusceddu
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Annamaria Colao
- Endocrinology Unit, Department of Clinical Medicine and Surgery, Università Federico II di Napoli, Naples, Italy
- Endocrinology Unit, Department of Clinical and Molecular Medicine, Sapienza University of Rome, Sant'Andrea Hospital, ENETS Center of Excellence, Rome, Italy
| | - Ivan Borbath
- Department of Hepatology and Gastroenterology, University Hospital St Luc/UCLouvain, Woluwe, Belgium
| | - Robbert de Haas
- Department of Radiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Maria Rinzivillo
- Digestive Disease Unit, Sant'Andrea University Hospital, ENETS Center of Excellence, Rome, Italy
| | - Alessandro Zerbi
- Pancreatic Surgery, Humanitas Clinical and Research Center, Rozzano-, Milano, Italy
| | - Luigi Funicelli
- Division of Radiology, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Wouter W de Herder
- Department of Internal Medicine, Erasmus MC and Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Andreas Selberherr
- Division of General Surgery, Department of Surgery, Medical University, Vienna, Austria
- Department of General and Visceral Surgery, Evangelisches Krankenhaus Wien, Vienna, Austria
| | - Anna Dorothea Wagner
- Department of Medical Oncology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Prakash Manoharan
- Department of Radiology and Nuclear Medicine, The Christie, Manchester, UK
| | - Andrea De Cima
- Department of Radiology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Willem Lybaert
- Department of Medical Oncology, Universitair Ziekenhuis Antwerpen, Edegem, Belgium
| | - Henning Jann
- Department of Hepatology and Gastroenterology, Charité-University, Charité-Universitätsmedizin, Berlin, Germany
| | - Natalie Prinzi
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Antongiulio Faggiano
- Endocrinology Unit, Department of Clinical Medicine and Surgery, Università Federico II di Napoli, Naples, Italy
| | - Laurence Annet
- Department of Radiology, Cliniques Universitaires Saint-Luc/UCLouvain, Brussels, Belgium
| | - Annemiek Walenkamp
- Department of Medical Oncology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - Francesco Panzuto
- Digestive Disease Unit, Sant'Andrea University Hospital, ENETS Center of Excellence, Rome, Italy
- Department of Medical-Surgical Sciences and Translational Medicine, Sapienza University of Rome, ENETS Center of Excellence, Rome, Italy
| | - Vittorio Pedicini
- Department of Radiology, Humanitas Clinical and Research Center, Rozzano-Milano, Italy
| | | | - Alexander Siebenhuener
- Department of Gastroenterology and Hepatology, University of Zurich, University Hospital Zurich, Zurich, Switzerland
| | - Marius E Mayerhoefer
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Philippe Ruszniewski
- Department of Pancreatology and Digestive Oncology, Université Paris-Cité, INSERM U1149, Beaujon University Hospital, Clichy, France
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Staal FC, Taghavi M, Hong EK, Tissier R, van Treijen M, Heeres BC, van der Zee D, Tesselaar ME, Beets-Tan RG, Maas M. CT-based radiomics to distinguish progressive from stable neuroendocrine liver metastases treated with somatostatin analogues: an explorative study. Acta Radiol 2023; 64:1062-1070. [PMID: 35702011 DOI: 10.1177/02841851221106598] [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] [Indexed: 11/17/2022]
Abstract
BACKGROUND Accurate response evaluation in patients with neuroendocrine liver metastases (NELM) remains a challenge. Radiomics has shown promising results regarding response assessment. PURPOSE To differentiate progressive (PD) from stable disease (SD) with radiomics in patients with NELM undergoing somatostatin analogue (SSA) treatment. MATERIAL AND METHODS A total of 46 patients with histologically confirmed gastroenteropancreatic neuroendocrine tumors (GEP-NET) with ≥1 NELM and ≥2 computed tomography (CT) scans were included. Response was assessed with Response Evaluation Criteria in Solid Tumors (RECIST1.1). Hepatic target lesions were manually delineated and analyzed with radiomics. Radiomics features were extracted from each NELM on both arterial-phase (AP) and portal-venous-phase (PVP) CT. Multiple instance learning with regularized logistic regression via LASSO penalization (with threefold cross-validation) was used to classify response. Three models were computed: (i) AP model; (ii) PVP model; and (iii) AP + PVP model for a lesion-based and patient-based outcome. Next, clinical features were added to each model. RESULTS In total, 19 (40%) patients had PD. Median follow-up was 13 months (range 1-50 months). Radiomics models could not accurately classify response (area under the curve 0.44-0.60). Adding clinical variables to the radiomics models did not significantly improve the performance of any model. CONCLUSION Radiomics features were not able to accurately classify response of NELM on surveillance CT scans during SSA treatment.
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Affiliation(s)
- Femke Cr Staal
- Department of Radiology, 1228The Netherlands Cancer Institute, Amsterdam, The Netherlands
- GROW School for Oncology and Developmental Biology, 5211Maastricht University Medical Centre, Maastricht, The Netherlands
- Center for Neuroendocrine Tumors, ENETS Center of Excellence, 1228Netherlands Cancer Institute Amsterdam/University Medical Center Utrecht, Utrecht, The Netherlands
| | - M Taghavi
- Department of Radiology, 1228The Netherlands Cancer Institute, Amsterdam, The Netherlands
- GROW School for Oncology and Developmental Biology, 5211Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Eun K Hong
- Department of Radiology, 1228The Netherlands Cancer Institute, Amsterdam, The Netherlands
- GROW School for Oncology and Developmental Biology, 5211Maastricht University Medical Centre, Maastricht, The Netherlands
- Department of Radiology, 26725Seoul National University Hospital, Seoul, Republic of Korea
| | - Renaud Tissier
- Biostatistics Center, 1228The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Mark van Treijen
- Center for Neuroendocrine Tumors, ENETS Center of Excellence, 1228Netherlands Cancer Institute Amsterdam/University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Endocrine Oncology, 8124University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Birthe C Heeres
- Department of Radiology, 1228The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | | | - Margot Et Tesselaar
- Center for Neuroendocrine Tumors, ENETS Center of Excellence, 1228Netherlands Cancer Institute Amsterdam/University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Medical Oncology, 1228The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Regina Gh Beets-Tan
- Department of Radiology, 1228The Netherlands Cancer Institute, Amsterdam, The Netherlands
- GROW School for Oncology and Developmental Biology, 5211Maastricht University Medical Centre, Maastricht, The Netherlands
- Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Monique Maas
- Department of Radiology, 1228The Netherlands Cancer Institute, Amsterdam, The Netherlands
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Chen H, Li Z, Hu Y, Xu X, Ye Z, Lou X, Zhang W, Gao H, Qin Y, Zhang Y, Chen X, Chen J, Tang W, Yu X, Ji S. Maximum Value on Arterial Phase Computed Tomography Predicts Prognosis and Treatment Efficacy of Sunitinib for Pancreatic Neuroendocrine Tumours. Ann Surg Oncol 2022; 30:2988-2998. [PMID: 36310316 DOI: 10.1245/s10434-022-12693-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 10/06/2022] [Indexed: 12/15/2022]
Abstract
PURPOSE This study was designed to assess the computed tomography maximum (CTmax) value on pretherapeutic arterial phase computed tomography (APCT) images to predict pancreatic neuroendocrine tumours (pNETs) recurrence and clarify its role in predicting the outcome of tumour therapy. METHODS This retrospective study enrolled 250 surgical patients and 24 nonsurgical patients with sunitinib-based treatment in our hospital from 2008 to 2019. CT images were assessed, the maximum value was defined as "CTmax," and recurrence-free survival (RFS) or progression-free survival (PFS) was compared between a high-CTmax group and a low-CTmax group among patients who underwent surgical resection or nonsurgical, sunitinib-based treatment according to the CTmax cutoff value. RESULTS In ROC curve analysis, a CTmax of 108 Hounsfield units, as the cutoff value, achieved an AUC of 0.796 in predicting recurrence. Compared with the low-CTmax group, the high-CTmax group had a longer RFS (p < 0.001). Low CTmax was identified as an independent factor for RFS (p < 0.001) in multivariate analysis; these results were confirmed using the internal validation set. The CTmax value was significantly correlated with the microvascular density (MVD) value (p < 0.001) and the vascular endothelial growth factor receptor 2 (VEGFR2) score (p < 0.001). Furthermore, the high-CTmax group had a better PFS than the low-CTmax group among the sunitinib treatment group (p = 0.007). CONCLUSIONS The tumour CTmax on APCT might be a potential and independent indicator for predicting recurrence in patients who have undergone surgical resection and assessing the efficacy of sunitinib for patients with advanced metastatic pNETs.
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Affiliation(s)
- Haidi Chen
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Zheng Li
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Yuheng Hu
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Xiaowu Xu
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Zeng Ye
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Xin Lou
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Wuhu Zhang
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Heli Gao
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Yi Qin
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Yue Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Third Affiliated Hospital of Suzhou University, The First People's Hospital of Changzhou, Changzhou, China
| | - Xuemin Chen
- Department of Hepatobiliary and Pancreatic Surgery, The Third Affiliated Hospital of Suzhou University, The First People's Hospital of Changzhou, Changzhou, China
| | - Jie Chen
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Wei Tang
- Department of Radiology, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Xianjun Yu
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
- Shanghai Pancreatic Cancer Institute, Shanghai, China.
- Pancreatic Cancer Institute, Fudan University, Shanghai, China.
| | - Shunrong Ji
- Center for Neuroendocrine Tumors, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
- Shanghai Pancreatic Cancer Institute, Shanghai, China.
- Pancreatic Cancer Institute, Fudan University, Shanghai, China.
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5
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van Treijen MJC, Schoevers JMH, Heeres BC, van der Zee D, Maas M, Valk GD, Tesselaar MET. Defining disease status in gastroenteropancreatic neuroendocrine tumors: Choi-criteria or RECIST? Abdom Radiol (NY) 2022; 47:1071-1081. [PMID: 34989825 DOI: 10.1007/s00261-021-03393-1] [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: 10/19/2021] [Revised: 12/15/2021] [Accepted: 12/17/2021] [Indexed: 11/27/2022]
Abstract
PURPOSE Adequate monitoring of changes in tumor load is fundamental for the assessment of the course of disease and response to treatment. There is an ongoing debate on the utility of RECIST v1.1 in gastroenteropancreatic neuroendocrine tumors (GEP-NETs). METHODS In this retrospective real-life cohort study, Choi-criteria were compared with RECIST v1.1. The agreement between both criteria and the association with survival endpoints were evaluated. RESULTS Seventy-five patients were included with a median follow-up of 35 months (range 8-53). Median progression-free survival (mPFS) according to RECIST v1.1 was 15 months (range 2-50) compared to 14 months (range 2-50) in Choi. According to RECIST, 33 (44%) patients were classified as having stable disease (SD), 40 (53%) as progressive disease (PD) and two (3%) patients as partial response (PR), compared to 9 (12%) patients classified as SD, 50 (67%) as PD and 16 (21%) as PR according to Choi-criteria. Overall concordance between the criteria was moderate (Cohen's Kappa = 0.408, p < 0.001) and agreement varied between 57 and 69% at each consecutive scan (p < 0.001). Survival analysis showed significant differences in overall survival (OS) for RECIST v1.1 categories PD and non-PD (log-rank p = 0.02), however, in Choi no significant differences in OS were found (p = 0.27). CONCLUSION RECIST v1.1 had a better clinical utility and prognostic value compared to Choi-criteria. Still, RECIST were also not sufficient to adequately predict OS. This outlines the need for new tools that provides accurate information on the disease course and treatment response to support precise prognostication in patients with GEP-NETs.
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Affiliation(s)
- M J C van Treijen
- Department of Endocrine Oncology, University Medical Center Utrecht Cancer Center, Heidelberglaan 100, 3584CX, Utrecht, The Netherlands.
- The Netherlands Cancer Institute/University Medical Center Utrecht Center for Neuroendocrine Tumors, ENETs Center of Excellence, Amsterdam/Utrecht, The Netherlands.
| | - J M H Schoevers
- Department of Endocrine Oncology, University Medical Center Utrecht Cancer Center, Heidelberglaan 100, 3584CX, Utrecht, The Netherlands
| | - B C Heeres
- The Netherlands Cancer Institute/University Medical Center Utrecht Center for Neuroendocrine Tumors, ENETs Center of Excellence, Amsterdam/Utrecht, The Netherlands
- Department of Radiology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - D van der Zee
- Department of Radiology, Bernhoven Hospital, Uden, The Netherlands
| | - M Maas
- The Netherlands Cancer Institute/University Medical Center Utrecht Center for Neuroendocrine Tumors, ENETs Center of Excellence, Amsterdam/Utrecht, The Netherlands
- Department of Radiology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - G D Valk
- Department of Endocrine Oncology, University Medical Center Utrecht Cancer Center, Heidelberglaan 100, 3584CX, Utrecht, The Netherlands
- The Netherlands Cancer Institute/University Medical Center Utrecht Center for Neuroendocrine Tumors, ENETs Center of Excellence, Amsterdam/Utrecht, The Netherlands
| | - M E T Tesselaar
- The Netherlands Cancer Institute/University Medical Center Utrecht Center for Neuroendocrine Tumors, ENETs Center of Excellence, Amsterdam/Utrecht, The Netherlands
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
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6
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Lee L, Ramos-Alvarez I, Jensen RT. Predictive Factors for Resistant Disease with Medical/Radiologic/Liver-Directed Anti-Tumor Treatments in Patients with Advanced Pancreatic Neuroendocrine Neoplasms: Recent Advances and Controversies. Cancers (Basel) 2022; 14:cancers14051250. [PMID: 35267558 PMCID: PMC8909561 DOI: 10.3390/cancers14051250] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/08/2022] [Accepted: 02/23/2022] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Tumor resistance, both primary and acquired, is leading to increased complexity in the nonsurgical treatment of patients with advanced panNENs, which would be greatly helped by reliable prognostic/predictive factors. The importance in identifying resistance is being contributed to by the increased array of possible treatments available for treating resistant advanced disease; the variable clinical course as well as response to any given treatment approach of patients within one staging or grading system, the advances in imaging which are providing increasing promising results/parameters that correlate with grading/outcome/resistance, the increased understanding of the molecular pathogenesis providing promising prognostic markers, all of which can contribute to selecting the best treatment to overcome resistance disease. Several factors have been identified that have prognostic/predictive value for identifying development resistant disease and affecting overall survival (OS)/PFS with various nonsurgical treatments of patients with advanced panNENs. Prognostic factors identified for patients with advanced panNENs for both OS/PFSs include various clinically-related factors (clinical, laboratory/biological markers, imaging, treatment-related factors), pathological factors (histological, classification, grading) and molecular factors. Particularly important prognostic factors for the different treatment modalities studies are the recent grading systems. Most prognostic factors for each treatment modality for OS/PFS are not specific for a given treatment option. These advances have generated several controversies and new unanswered questions, particularly those related to their possible role in predicting the possible sequence of different anti-tumor treatments in patients with different presentations. Each of these areas is reviewed in this paper. Abstract Purpose: Recent advances in the diagnosis, management and nonsurgical treatment of patients with advanced pancreatic neuroendocrine neoplasms (panNENs) have led to an emerging need for sensitive and useful prognostic factors for predicting responses/survival. Areas covered: The predictive value of a number of reported prognostic factors including clinically-related factors (clinical/laboratory/imaging/treatment-related factors), pathological factors (histological/classification/grading), and molecular factors, on therapeutic outcomes of anti-tumor medical therapies with molecular targeting agents (everolimus/sunitinib/somatostatin analogues), chemotherapy, radiological therapy with peptide receptor radionuclide therapy, or liver-directed therapies (embolization/chemoembolization/radio-embolization (SIRTs)) are reviewed. Recent findings in each of these areas, as well as remaining controversies and uncertainties, are discussed in detail, particularly from the viewpoint of treatment sequencing. Conclusions: The recent increase in the number of available therapeutic agents for the nonsurgical treatment of patients with advanced panNENs have raised the importance of prognostic factors predictive for therapeutic outcomes of each treatment option. The establishment of sensitive and useful prognostic markers will have a significant impact on optimal treatment selection, as well as in tailoring the therapeutic sequence, and for maximizing the survival benefit of each individual patient. In the paper, the progress in this area, as well as the controversies/uncertainties, are reviewed.
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Affiliation(s)
- Lingaku Lee
- Digestive Diseases Branch, NIDDK, NIH, Bethesda, MD 20892-1804, USA; (L.L.); (I.R.-A.)
- National Kyushu Cancer Center, Department of Hepato-Biliary-Pancreatology, Fukuoka 811-1395, Japan
| | - Irene Ramos-Alvarez
- Digestive Diseases Branch, NIDDK, NIH, Bethesda, MD 20892-1804, USA; (L.L.); (I.R.-A.)
| | - Robert T. Jensen
- Digestive Diseases Branch, NIDDK, NIH, Bethesda, MD 20892-1804, USA; (L.L.); (I.R.-A.)
- Correspondence: ; Tel.: +1-301-496-4201
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Optimization of the tumour response threshold in advanced gastroenteropancreatic neuroendocrine carcinomas treated with cisplatin/etoposide combined chemotherapy. Eur J Radiol 2021; 147:110119. [PMID: 34979297 DOI: 10.1016/j.ejrad.2021.110119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 12/05/2021] [Accepted: 12/21/2021] [Indexed: 11/20/2022]
Abstract
OBJECTIVES To identify early and more accurate imaging response criteria for computed tomography evaluation to define 'responders' in advanced gastroenteropancreatic neuroendocrine carcinoma (GEP-NEC) patients treated with cisplatin/etoposide combined chemotherapy. MATERIALS AND METHODS Thirty-seven patients with GEP-NEC treated with first-line cisplatin/etoposide (E/P) combined chemotherapy were enrolled in this study. Computed tomography scans of the chest, abdomen, and pelvis were performed at baseline, during the treatment course, and during follow-up. Tumour size was measured, and tumour response was evaluated by Response Evaluation Criteria in Solid Tumours (RECIST) 1.1. Receiver operating characteristic (ROC) analysis was carried out among the patients who progressed during follow-up. Thresholds from -55% to + 5% were tested by Kaplan-Meier analysis to define "responders" for significantly improved progression-free survival (PFS). The overall survival rate was compared between these two groups. RESULTS A reduction of 45% (vs. baseline) achieved the highest sensitivity (70%) and specificity (90%) by ROC analysis. This threshold divided patients into 15 responders and 22 nonresponders. Patients who were grouped as responders by the -45% threshold had a significantly longer PFS (11.06 months) than nonresponders (7.97 months, hazard ratio, 3.636; 95% confidence interval, 1.293-10.164). No significant difference was shown in overall survival between these two groups (29.1 vs. 21.4 months, P = 0.190). CONCLUSION A 45% reduction in target lesions may be considered to be a more reliable predictor than the RECIST 1.1 criteria in evaluating the outcome of GEP-NEC patients treated with E/P chemotherapy.
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Vullierme MP, Ruszniewski P, de Mestier L. Are recist criteria adequate in assessing the response to therapy in metastatic NEN? Rev Endocr Metab Disord 2021; 22:637-645. [PMID: 33871762 DOI: 10.1007/s11154-021-09645-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/08/2021] [Indexed: 10/21/2022]
Abstract
Response to therapy criteria, known as RECIST (Response Evaluation Criteria in Solid Tumours), are widely used to evaluate neuroendocrine tumours (NET) metastatic to the liver, under treatment. RECIST criteria does not take in account many various distinct features such as tumour growth, secretory capacity and anatomical localisation with wide variation in clinical and biological presentation of different NETs. Key features of RECIST includes definitions of the minimal size of measurable lesions, instructions on how many lesions to measure and follow, and the use of unidimensional, rather than bidimensional, measures for overall evaluation of tumour burden. These measures are currently done with computed tomography (CT) or Magnetic Resonance Imaging (MRI). RECIST criteria are accurate in assessing tumour progression but sometimes inaccurate in assessing tumour response after locoregional therapy or under molecular targeted therapy, tumour vessels being part of the target of such treatments. There is poor correlation between a so called tumour necrosis and conventional methods of response assessment, which poses questions of how best to quantify efficacy of these targeted therapies. Variations in tumour density with computed tomography (CT) could theoretically be associated with tumour necrosis. This hypothesis has been studied proposing alternative CT criteria of response evaluation in metastatic digestive NET treated with targeted therapy. If preliminary results upon the poor relationship between density measured with CT (derived from CHOI criteria) evolution curves at CT and PFS are confirmed by further studies, showing that the correlation between density changing and response to non-targeted treatment is weak, the use of contrast injection, will probably be not mandatory to enable appropriate evaluation.
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Affiliation(s)
- Marie-Pierre Vullierme
- Department of Radiology, University Hospitals Paris-Nord Val-de-Seine, AP-HP, Beaujon, 92110, Clichy, France.
- Université Paris Diderot-Paris 7, University of Paris, 75018, Clichy, France.
| | - Philippe Ruszniewski
- Department of Pancreatology, University Hospitals Paris-Nord Val-de-Seine, AP-HP, Beaujon, 92110, Clichy, France
- Université Paris Diderot-Paris 7, University of Paris, 75018, Clichy, France
| | - Louis de Mestier
- Department of Pancreatology, University Hospitals Paris-Nord Val-de-Seine, AP-HP, Beaujon, 92110, Clichy, France
- Université Paris Diderot-Paris 7, University of Paris, 75018, Clichy, France
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Fehrenbach U, Xin S, Hartenstein A, Auer TA, Dräger F, Froböse K, Jann H, Mogl M, Amthauer H, Geisel D, Denecke T, Wiedenmann B, Penzkofer T. Automatized Hepatic Tumor Volume Analysis of Neuroendocrine Liver Metastases by Gd-EOB MRI-A Deep-Learning Model to Support Multidisciplinary Cancer Conference Decision-Making. Cancers (Basel) 2021; 13:2726. [PMID: 34072865 PMCID: PMC8199286 DOI: 10.3390/cancers13112726] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/22/2021] [Accepted: 05/25/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Rapid quantification of liver metastasis for diagnosis and follow-up is an unmet medical need in patients with secondary liver malignancies. We present a 3D-quantification model of neuroendocrine liver metastases (NELM) using gadoxetic-acid (Gd-EOB)-enhanced MRI as a useful tool for multidisciplinary cancer conferences (MCC). METHODS Manual 3D-segmentations of NELM and livers (149 patients in 278 Gd-EOB MRI scans) were used to train a neural network (U-Net architecture). Clinical usefulness was evaluated in another 33 patients who were discussed in our MCC and received a Gd-EOB MRI both at baseline and follow-up examination (n = 66) over 12 months. Model measurements (NELM volume; hepatic tumor load (HTL)) with corresponding absolute (ΔabsNELM; ΔabsHTL) and relative changes (ΔrelNELM; ΔrelHTL) between baseline and follow-up were compared to MCC decisions (therapy success/failure). RESULTS Internal validation of the model's accuracy showed a high overlap for NELM and livers (Matthew's correlation coefficient (φ): 0.76/0.95, respectively) with higher φ in larger NELM volume (φ = 0.80 vs. 0.71; p = 0.003). External validation confirmed the high accuracy for NELM (φ = 0.86) and livers (φ = 0.96). MCC decisions were significantly differentiated by all response variables (ΔabsNELM; ΔabsHTL; ΔrelNELM; ΔrelHTL) (p < 0.001). ΔrelNELM and ΔrelHTL showed optimal discrimination between therapy success or failure (AUC: 1.000; p < 0.001). CONCLUSION The model shows high accuracy in 3D-quantification of NELM and HTL in Gd-EOB-MRI. The model's measurements correlated well with MCC's evaluation of therapeutic response.
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Affiliation(s)
- Uli Fehrenbach
- Department of Radiology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany; (A.H.); (T.A.A.); (F.D.); (K.F.); (D.G.); (T.P.)
| | - Siyi Xin
- Division of Gastroenterology, Medical Department, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany; (S.X.); (H.J.); (B.W.)
| | - Alexander Hartenstein
- Department of Radiology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany; (A.H.); (T.A.A.); (F.D.); (K.F.); (D.G.); (T.P.)
- Bayer AG, 13353 Berlin, Germany
| | - Timo Alexander Auer
- Department of Radiology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany; (A.H.); (T.A.A.); (F.D.); (K.F.); (D.G.); (T.P.)
- Berlin Institute of Health, 10178 Berlin, Germany
| | - Franziska Dräger
- Department of Radiology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany; (A.H.); (T.A.A.); (F.D.); (K.F.); (D.G.); (T.P.)
| | - Konrad Froböse
- Department of Radiology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany; (A.H.); (T.A.A.); (F.D.); (K.F.); (D.G.); (T.P.)
| | - Henning Jann
- Division of Gastroenterology, Medical Department, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany; (S.X.); (H.J.); (B.W.)
| | - Martina Mogl
- Department of Surgery Campus Charité Mitte/Campus Virchow-Klinikum, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany;
| | - Holger Amthauer
- Department of Nuclear Medicine, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany;
| | - Dominik Geisel
- Department of Radiology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany; (A.H.); (T.A.A.); (F.D.); (K.F.); (D.G.); (T.P.)
| | - Timm Denecke
- Department of Diagnostic and Interventional Radiology, University Hospital Leipzig, 04103 Leipzig, Germany;
| | - Bertram Wiedenmann
- Division of Gastroenterology, Medical Department, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany; (S.X.); (H.J.); (B.W.)
| | - Tobias Penzkofer
- Department of Radiology, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany; (A.H.); (T.A.A.); (F.D.); (K.F.); (D.G.); (T.P.)
- Berlin Institute of Health, 10178 Berlin, Germany
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Barriuso J, Lamarca A. Clinical and Translational Research Challenges in Neuroendocrine Tumours. Curr Med Chem 2020; 27:4823-4839. [PMID: 32031064 DOI: 10.2174/0929867327666200207120725] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 12/04/2019] [Accepted: 01/16/2020] [Indexed: 12/31/2022]
Abstract
Neuroendocrine tumours (NETs) represent a range of neoplasms that may arise from any (neuro)endocrine cell situated in any part of the human body. As any other rare diseases, NETs face several difficulties in relation to research. This review will describe some of the main challenges and proposed solutions faced by researchers with expertise in rare malignancies. Some of the most common challenges in clinical and translational research are enumerated in this review, covering aspects from clinical, translational and basic research. NETs being a heterogeneous group of diseases and a limited sample size of clinical and translational research projects are the main challenges. Challenges with NETs lay over the disparities between healthcare models to tackle rare diseases. NETs add an extra layer of complexity due to a numerous group of different entities. Prospective real-world data trials are an opportunity for rare cancers with the revolution of electronic health technologies. This review explores potential solutions to these challenges that could be useful not only to the NET community but also to other rare tumours researchers.
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Affiliation(s)
- Jorge Barriuso
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Angela Lamarca
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
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11
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Megdanova-Chipeva VG, Lamarca A, Backen A, McNamara MG, Barriuso J, Sergieva S, Gocheva L, Mansoor W, Manoharan P, Valle JW. Systemic Treatment Selection for Patients with Advanced Pancreatic Neuroendocrine Tumours (PanNETs). Cancers (Basel) 2020; 12:E1988. [PMID: 32708210 PMCID: PMC7409353 DOI: 10.3390/cancers12071988] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/19/2020] [Accepted: 07/09/2020] [Indexed: 02/07/2023] Open
Abstract
Pancreatic neuroendocrine tumours (PanNETs) are rare diseases and a good example of how research is not only feasible, but also of crucial importance in the scenario of rare tumours. Many clinical trials have been performed over the past two decades expanding therapeutic options for patients with advanced PanNETs. Adequate management relies on optimal selection of treatment, which may be challenging for clinicians due to the fact that multiple options of therapy are currently available. A number of therapies already exist, which are supported by data from phase III studies, including somatostatin analogues and targeted therapies (sunitinib and everolimus). In addition, chemotherapy remains an option, with temozolomide and capecitabine being one of the most popular doublets to use. Peptide receptor radionuclide therapy was successfully implemented in patients with well-differentiated gastro-entero-pancreatic neuroendocrine tumours, but with certain questions waiting to be solved for the management of PanNETs. Finally, the role of immunotherapy is still poorly understood. In this review, the data supporting current systemic treatment options for locally advanced or metastatic PanNETs are summarized. Strategies for treatment selection in patients with PanNETs based on patient, disease, or drug characteristics is provided, as well as a summary of current evidence on prognostic and predictive biomarkers. Future perspectives are discussed, focusing on current and forthcoming challenges and unmet needs of patients with these rare tumours.
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Affiliation(s)
- Vera G. Megdanova-Chipeva
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester M204BX, UK; (V.G.M.-C.); (A.B.); (M.G.M.); (J.B.); (W.M.)
- Department of Radiotherapy and Medical Oncology, University Hospital “Queen Yoanna” ISUL, 1000 Sofia, Bulgaria;
- Department of Nuclear Medicine, Radiotherapy and Medical Oncology, Medical University—Sofia, 1000 Sofia, Bulgaria
| | - Angela Lamarca
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester M204BX, UK; (V.G.M.-C.); (A.B.); (M.G.M.); (J.B.); (W.M.)
- Division of Cancer Sciences, University of Manchester, Manchester M204BX, UK
| | - Alison Backen
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester M204BX, UK; (V.G.M.-C.); (A.B.); (M.G.M.); (J.B.); (W.M.)
- Division of Cancer Sciences, University of Manchester, Manchester M204BX, UK
| | - Mairéad G. McNamara
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester M204BX, UK; (V.G.M.-C.); (A.B.); (M.G.M.); (J.B.); (W.M.)
- Division of Cancer Sciences, University of Manchester, Manchester M204BX, UK
| | - Jorge Barriuso
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester M204BX, UK; (V.G.M.-C.); (A.B.); (M.G.M.); (J.B.); (W.M.)
- Division of Cancer Sciences, University of Manchester, Manchester M204BX, UK
| | - Sonia Sergieva
- Nuclear Medicine Department, SBALOZ, Sofia grad, 1000 Sofia, Bulgaria;
| | - Lilia Gocheva
- Department of Radiotherapy and Medical Oncology, University Hospital “Queen Yoanna” ISUL, 1000 Sofia, Bulgaria;
- Department of Nuclear Medicine, Radiotherapy and Medical Oncology, Medical University—Sofia, 1000 Sofia, Bulgaria
| | - Was Mansoor
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester M204BX, UK; (V.G.M.-C.); (A.B.); (M.G.M.); (J.B.); (W.M.)
- Division of Cancer Sciences, University of Manchester, Manchester M204BX, UK
| | - Prakash Manoharan
- Department of Radiology and Nuclear Medicine, The Christie NHS Foundation Trust, Manchester M204BX, UK;
| | - Juan W. Valle
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester M204BX, UK; (V.G.M.-C.); (A.B.); (M.G.M.); (J.B.); (W.M.)
- Division of Cancer Sciences, University of Manchester, Manchester M204BX, UK
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Abstract
OBJECTIVES The combination chemotherapy regimen capecitabine/temozolomide (CAPTEM) is efficacious for metastatic well-differentiated pancreatic neuroendocrine tumors (PNETs), but its role in the neoadjuvant setting has not been established. METHODS The outcomes of all patients with locally advanced or resectable metastatic PNETs who were treated with neoadjuvant CAPTEM between 2009 and 2017 at 2 high-volume institutions were retrospectively reviewed. RESULTS Thirty patients with locally advanced PNET (n = 10) or pancreatic neuroendocrine hepatic metastases (n = 20) received neoadjuvant CAPTEM. Thirteen patients (43%) exhibited partial radiographic response (PR), 16 (54%) had stable disease, and 1 (3%) developed progressive disease. Twenty-six (87%) patients underwent resection (pancreatectomy [n = 12], combined pancreatectomy and liver resection [n = 8], or major hepatectomy alone [n = 6]); 3 (18%) declined surgery despite radiographic PR, and 1 (3%) underwent aborted pancreatoduodenectomy. Median primary tumor size was 5.5 cm, and median Ki-67 index was 3.5%. Rates of PR were similar across tumor grades (P = 0.24). At median follow-up of 49 months, median progression-free survival was 28.2 months and 5-year overall survival was 63%. CONCLUSIONS Neoadjuvant CAPTEM is associated with favorable radiographic objective response rates for locally advanced or metastatic PNET and may facilitate selection of patients appropriate for surgical resection.
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Evaluating radiological response in pancreatic neuroendocrine tumours treated with sunitinib: comparison of Choi versus RECIST criteria (CRIPNET_ GETNE1504 study). Br J Cancer 2019; 121:537-544. [PMID: 31477779 PMCID: PMC6889276 DOI: 10.1038/s41416-019-0558-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 08/09/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The purpose of our study was to analyse the usefulness of Choi criteria versus RECIST in patients with pancreatic neuroendocrine tumours (PanNETs) treated with sunitinib. METHOD A multicentre, prospective study was conducted in 10 Spanish centres. Computed tomographies, at least every 6 months, were centrally evaluated until tumour progression. RESULTS One hundred and seven patients were included. Median progression-free survival (PFS) by RECIST and Choi were 11.42 (95% confidence interval [CI], 9.7-15.9) and 15.8 months (95% CI, 13.9-25.7). PFS by Choi (Kendall's τ = 0.72) exhibited greater correlation with overall survival (OS) than PFS by RECIST (Kendall's τ = 0.43). RECIST incorrectly estimated prognosis in 49.6%. Partial response rate increased from 12.8% to 47.4% with Choi criteria. Twenty-four percent of patients with progressive disease according to Choi had stable disease as per RECIST, overestimating treatment effect. Choi criteria predicted PFS/OS. Changes in attenuation occurred early and accounted for 21% of the variations in tumour volume. Attenuation and tumour growth rate (TGR) were associated with improved survival. CONCLUSION Choi criteria were able to capture sunitinib's activity in a clinically significant manner better than RECIST; their implementation in standard clinical practice shall be strongly considered in PanNET patients treated with this drug.
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14
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Perspective of neo-adjuvant/conversion and adjuvant therapy for pancreatic neuroendocrine tumors. JOURNAL OF PANCREATOLOGY 2019. [DOI: 10.1097/jp9.0000000000000023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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15
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Carmona-Bayonas A, Jiménez-Fonseca P, Lamarca Á, Barriuso J, Castaño Á, Benavent M, Alonso V, Riesco-Martínez MDC, Alonso-Gordoa T, Custodio A, Sánchez Cánovas M, Hernando Cubero J, López C, Lacasta A, Fernández Montes A, Marazuela M, Crespo G, Escudero P, Diaz JÁ, Feliciangeli E, Gallego J, Llanos M, Segura Á, Vilardell F, Percovich JC, Grande E, Capdevila J, Valle JW, García-Carbonero R. Prediction of Progression-Free Survival in Patients With Advanced, Well-Differentiated, Neuroendocrine Tumors Being Treated With a Somatostatin Analog: The GETNE-TRASGU Study. J Clin Oncol 2019; 37:2571-2580. [PMID: 31390276 PMCID: PMC6768612 DOI: 10.1200/jco.19.00980] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
PURPOSE Somatostatin analogs (SSAs) are recommended for the first-line treatment of most patients with well-differentiated, gastroenteropancreatic (GEP) neuroendocrine tumors; however, benefit from treatment is heterogeneous. The aim of the current study was to develop and validate a progression-free survival (PFS) prediction model in SSA-treated patients. PATIENTS AND METHODS We extracted data from the Spanish Group of Neuroendocrine and Endocrine Tumors Registry (R-GETNE). Patient eligibility criteria included GEP primary, Ki-67 of 20% or less, and first-line SSA monotherapy for advanced disease. An accelerated failure time model was developed to predict PFS, which was represented as a nomogram and an online calculator. The nomogram was externally validated in an independent series of consecutive eligible patients (The Christie NHS Foundation Trust, Manchester, United Kingdom). RESULTS We recruited 535 patients (R-GETNE, n = 438; Manchester, n = 97). Median PFS and overall survival in the derivation cohort were 28.7 (95% CI, 23.8 to 31.1) and 85.9 months (95% CI, 71.5 to 96.7 months), respectively. Nine covariates significantly associated with PFS were primary tumor location, Ki-67 percentage, neutrophil-to-lymphocyte ratio, alkaline phosphatase, extent of liver involvement, presence of bone and peritoneal metastases, documented progression status, and the presence of symptoms when initiating SSA. The GETNE-TRASGU (Treated With Analog of Somatostatin in Gastroenteropancreatic and Unknown Primary NETs) model demonstrated suitable calibration, as well as fair discrimination ability with a C-index value of 0.714 (95% CI, 0.680 to 0.747) and 0.732 (95% CI, 0.658 to 0.806) in the derivation and validation series, respectively. CONCLUSION The GETNE-TRASGU evidence-based prognostic tool stratifies patients with GEP neuroendocrine tumors receiving SSA treatment according to their estimated PFS. This nomogram may be useful when stratifying patients with neuroendocrine tumors in future trials. Furthermore, it could be a valuable tool for making treatment decisions in daily clinical practice.
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Affiliation(s)
- Alberto Carmona-Bayonas
- Hospital Universitario Morales Meseguer, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria, Murcia, Spain
| | | | - Ángela Lamarca
- The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Jorge Barriuso
- The Christie NHS Foundation Trust, Manchester, United Kingdom.,University of Manchester, Manchester, United Kingdom
| | - Ángel Castaño
- Hospital Universitario de Fuenlabrada, Madrid, Spain
| | - Marta Benavent
- Hospital Universitario Virgen del Rocío, Instituto de Biomedicina de Sevilla, Sevilla, Spain
| | | | | | | | - Ana Custodio
- Hospital Universitario La Paz, Centro de Investigación Biomédica en Red Cáncer, CB16/12/00398, Madrid, Spain
| | - Manuel Sánchez Cánovas
- Hospital Universitario Morales Meseguer, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria, Murcia, Spain
| | - Jorge Hernando Cubero
- Hospital Universitario Vall d'Hebron, Vall Hebron Institute of Oncology, Autonomous University of Barcelona, Barcelona, Spain
| | - Carlos López
- Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | | | | | | | | | - Pilar Escudero
- Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | | | | | | | - Marta Llanos
- Hospital Universitario de Canarias, Universidad de La Laguna, Tenerife, Spain
| | | | | | | | | | - Jaume Capdevila
- Hospital Universitario Vall d'Hebron, Vall Hebron Institute of Oncology, Autonomous University of Barcelona, Barcelona, Spain
| | - Juan W Valle
- The Christie NHS Foundation Trust, Manchester, United Kingdom.,University of Manchester, Manchester, United Kingdom
| | - Rocío García-Carbonero
- Hospital Universitario Doce de Octubre, Universidad Complutense de Madrid, Centro Nacional de Investigaciones Oncológicas, Centro de Investigación Biomédica en Red Cáncer, Madrid, Spain
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Lamarca A, Ronot M, Moalla S, Crona J, Opalinska M, Lopez Lopez C, Pezzutti D, Najran P, Carvhalo L, Bezerra ROF, Borg P, Vietti Violi N, Vidal Trueba H, de Mestier L, Scaefer N, Baudin E, Sundin A, Costa F, Pavel M, Dromain C. Tumor Growth Rate as a Validated Early Radiological Biomarker Able to Reflect Treatment-Induced Changes in Neuroendocrine Tumors: The GREPONET-2 Study. Clin Cancer Res 2019; 25:6692-6699. [PMID: 31375514 DOI: 10.1158/1078-0432.ccr-19-0963] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/23/2019] [Accepted: 07/30/2019] [Indexed: 11/16/2022]
Abstract
PURPOSE Tumor growth rate (TGR) represents the percentage change in tumor volume per month (%/m). Previous results from the GREPONET study showed that TGR measured after 3 months (TGR3m) of starting systemic treatment (ST) or watch and wait (WW) was an early biomarker predicting progression-free survival (PFS) in neuroendocrine tumors (NET). EXPERIMENTAL DESIGN Patients from 7 centers with advanced grade (G) 1/2 NETs from the pancreas (P)/small bowel (SB) initiating ST/WW were eligible. Computed tomography (CT)/MRI performed at prebaseline, baseline, and 3(±1) months of study entry were retrospectively reviewed. Aim-1: explore treatment-induced changes in TGR (ΔTGR3m-BL; paired T test), and Aim-2: validate TGR3m (<0.8%/m vs. ≥0.8%/m) as an early biomarker in an independent cohort (Kaplan-Meier/Cox regression). RESULTS Of 785 patients screened, 127 were eligible. Mean (SD) TGR0 and TGR3m were 5.4%/m (14.9) and -1.4%/m (11.8), respectively. Mean (SD) ΔTGR3m-BL paired-difference was -6.8%/m (19.3; P < 0.001). Most marked ΔTGR3m-BL [mean (SD)] were identified with targeted therapies [-11.3%/m (4.7); P = 0.0237] and chemotherapy [-7.9%/m (3.4); P = 0.0261]. Multivariable analysis confirmed the absence of previous treatment (OR = 4.65; 95% CI, 1.31-16.52; P = 0.018) and low TGR3m (continuous variable; OR 1.09; 95% CI, 1.01-1.19; P = 0.042) to be independent predictors of radiologic objective response. When the multivariable survival analysis for PFS (Cox regression) was adjusted to grade (P = 0.004) and stage (P = 0.017), TGR3m ≥ 0.8 (vs. <0.8) maintained its significance as a prognostic factor (P < 0.001), whereas TGR0 and ΔTGR3m-BL did not. TGR3m ≥ 0.8%/m was confirmed as an independent prognostic factor for PFS [external validation; Aim-2; multivariable HR 2.21 (95% CI, 1.21-3.70; P = 0.003)]. CONCLUSIONS TGR has a role as a biomarker for monitoring response to therapy for early identification of treatment-induced changes and for early prediction of PFS and radiologic objective response.
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Affiliation(s)
- Angela Lamarca
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, United Kingdom.
| | - Maxime Ronot
- Department of Radiology, Beaujon University Hospital, Clichy, France
| | - Salma Moalla
- Department of Radiology, Institute Gustave Roussy, Paris, France
| | - Joakim Crona
- Department of Medical Sciences, Uppsala University Hospital, Uppsala, Sweden
| | - Marta Opalinska
- Nuclear Medicine Unit, Department of Endocrinology, University Hospital, Krakow, Poland
| | - Carlos Lopez Lopez
- Department of Medical Oncology, Hospital Universitario Marques de Valdecilla, Santander, Spain
| | - Daniela Pezzutti
- Department of Radiology, Israelita Albert Einstein Hospital, São Paulo, Brazil
| | - Pavan Najran
- Department of Radiology, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Luciana Carvhalo
- Department of Medical Oncology, Sirio-Libanes Hospital, São Paulo, Brazil
| | - Regis Otaviano Franca Bezerra
- Department of Radiology, Sirio-Libanes Hospital, São Paulo, Brazil and São Paulo Cancer Institute Octavio Frias de Oliveira (ICESP), São Paulo, Brazil
| | - Philip Borg
- Department of Radiology, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Naik Vietti Violi
- Department of Radiology, CHUV University Hospital, Lausanne, Switzerland
| | - Hector Vidal Trueba
- Department of Radiology, Hospital Universitario Marques de Valdecilla, Santander, Spain
| | - Louis de Mestier
- Department of Gastroenterology, Beujon University Hospital, Clichy, France
| | - Niklaus Scaefer
- Department of Medical Oncology, CHUV University Hospital, Lausanne, Switzerland
| | - Eric Baudin
- Department of Nuclear Medicine, Institute Gustave Roussy, Paris, France
| | - Anders Sundin
- Department of Radiology, Institution of Surgical Sciences, Uppsala University Hospital, Uppsala, Sweden
| | - Frederico Costa
- Department of Medical Oncology; Sirio-Libanes Hospital, São Paulo, Brazil
| | - Marianne Pavel
- Department of Endocrinology, Universitatsklinikum Erlangen, Erlangen, Germany
| | - Clarisse Dromain
- Department of Radiology, CHUV University Hospital, Lausanne, Switzerland
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17
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Colloca GA, Venturino A, Guarneri D. Analysis of response-related endpoints in trials of first-line medical treatment of metastatic colorectal cancer. Int J Clin Oncol 2019; 24:1406-1411. [PMID: 31289956 DOI: 10.1007/s10147-019-01504-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 06/30/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Tumor radiologic response after systemic chemotherapy has been used as endpoint of trials of patients with metastatic colorectal cancer (mCRC), which can report the best overall response rate (ORR) and the disease control rate (DCR) by RECIST criteria as well as the early tumor shrinkage (ETS). The present study perform a trial-level analysis to verify whether such response-related endpoints are predictive of overall survival (OS). METHODS After a systematic search, randomized clinical trials (RCTs) were selected each time they evaluated the three response endpoints and progression-free survival (PFS). Two arms per trial were selected, and the correlation between the difference in each endpoint and the difference in OS was calculated. The analysis then evaluated the effects of treatment on ∆ORR, or ∆DCR, ∆ETS, ∆PFS, and on ∆OS, using separate linear regressions for each of them, and the proportion of variability explained (R2trial) on OS for each of the four endpoints was calculated. RESULTS The systematic review of the literature led to the selection of 12 RCTs, 7 phase-3 and 5 phase-2. ETS reported a different performance in the entire sample compared to phase-3 trials (R2trial = 0.172 vs. 0.842), differently from DCR (R2trial = 0.541 vs. 0.816) and ORR (R2trial = 0.349 vs. 0.740). Surprisingly, PFS predicted OS with a weak correlation, which was not significant in the subgroup of phase-3 studies (R2trial = 0.455 vs. 0.466). CONCLUSION The results of the present trial-level analysis report a good performance of two response-related endpoints, DCR and ETS, and suggest that they could be differently used depending on the setting of disease and the type of medical treatment.
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Affiliation(s)
- Giuseppe A Colloca
- Department of Oncology, Ospedale Civile di Sanremo, Via G. Borea n. 56, 18038, Sanremo, Imperia, Italy.
| | - Antonella Venturino
- Department of Oncology, Ospedale Civile di Sanremo, Via G. Borea n. 56, 18038, Sanremo, Imperia, Italy
| | - Domenico Guarneri
- Department of Oncology, Ospedale Civile di Sanremo, Via G. Borea n. 56, 18038, Sanremo, Imperia, Italy
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18
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Lamarca A, Crona J, Ronot M, Opalinska M, Lopez Lopez C, Pezzutti D, Najran P, Carvhalo L, Franca Bezerra RO, Borg P, Vietti Violi N, Vidal Trueba H, de Mestier L, Schaefer N, Sundin A, Costa F, Pavel M, Dromain C. Value of Tumor Growth Rate (TGR) as an Early Biomarker Predictor of Patients' Outcome in Neuroendocrine Tumors (NET)-The GREPONET Study. Oncologist 2019; 24:e1082-e1090. [PMID: 30910869 DOI: 10.1634/theoncologist.2018-0672] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 02/19/2019] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Tumor growth rate (TGR; percent size change per month [%/m]) is postulated to be an early radiological biomarker to overcome limitations of RECIST. This study aimed to assess the impact of TGR in neuroendocrine tumors (NETs) and potential clinical and therapeutic applications. MATERIALS AND METHODS Patients (pts) with advanced grade (G) 1/2 NETs from the pancreas or small bowel initiating systemic treatment (ST) or watch and wait (WW) were eligible. Baseline and follow-up scans were retrospectively reviewed to calculate TGR at pretreatment (TGR0), first follow-up (TGRfirst), and 3(±1) months of study entry (TGR3m). RESULTS Out of 905 pts screened, 222 were eligible. Best TGRfirst (222 pts) cutoff was 0.8 (area under the curve, 0.74). When applied to TGR3m (103 pts), pts with TGR3m <0.8 (66.9%) versus TGR3m ≥ 0.8 (33.1%) had longer median progression-free survival (PFS; 26.3 m; 95% confidence interval [CI] 19.5-32.4 vs. 9.3 m; 95% CI, 6.1-22.9) and lower progression rate at 12 months (7.3% vs. 56.8%; p = .001). WW (vs. ST) and TGR3m ≥ 0.8 (hazard ratio [HR], 3.75; 95% CI, 2.21-6.34; p < .001) were retained as factors associated with a shorter PFS in multivariable Cox regression. TGR3m (HR, 3.62; 95% CI, 1.97-6.64; p < .001) was also an independent factor related to shorter PFS when analysis was limited to pts with stable disease (81 pts). Out of the 60 pts with TGR0 data available, 60% of pts had TGR0 < 4%/month. TGR0 ≥ 4 %/month (HR, 2.22; 95% CI, 1.15-4.31; p = .018) was also an independent factor related to shorter PFS. CONCLUSION TGR is an early radiological biomarker able to predict PFS and to identify patients with advanced NETs who may require closer radiological follow-up. IMPLICATIONS FOR PRACTICE Tumor growth rate at 3 months (TGR3m) is an early radiological biomarker able to predict progression-free survival and to identify patients with advanced neuroendocrine tumors who may require closer radiological follow-up. It is feasible to calculate TGR3m in clinical practice and it could be a useful tool for guiding patient management. This biomarker could also be implemented in future clinical trials to assess response to therapy.
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Affiliation(s)
- Angela Lamarca
- Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, United Kingdom
- Division of Cancer Sciences, University of Manchester, Manchester, United Kingdom
| | - Joakim Crona
- Department of Medical Sciences, Institution of Surgical Sciences, Uppsala University Hospital, Sweden
| | - Maxime Ronot
- Department of Radiology, Beaujon University Hospital, Clichy, France
| | - Marta Opalinska
- Nuclear Medicine Unit, Department of Endocrinology, University Hospital, Krakow, Poland
| | - Carlos Lopez Lopez
- Department of Medical Oncology, Hospital Universitario Marques de Valdecilla, Santander, Spain
| | - Daniela Pezzutti
- Department of Radiology, Israelita Albert Einstein Hospital, Sao Paulo, Brazil
| | - Pavan Najran
- Department of Radiology, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Luciana Carvhalo
- Department of Medical Oncology, Sirio-Libanes Hospital, Sao Paulo, Brazil
| | - Regis Otaviano Franca Bezerra
- Department of Radiology, Sirio-Libanes Hospital, Sao Paulo, Brazil
- São Paulo Cancer Institute Octavio Frias de Oliveira, Sao Paulo, Brazil
| | - Philip Borg
- Department of Radiology, The Christie NHS Foundation Trust, Manchester, United Kingdom
| | - Naik Vietti Violi
- Department of Radiology, CHUV University Hospital, Lausanne, Switzerland
| | - Hector Vidal Trueba
- Department of Radiology, Hospital Universitario Marques de Valdecilla, Santander, Spain
| | - Louis de Mestier
- Department of Gastroenterology, Beaujon University Hospital, Clichy, France
| | - Niklaus Schaefer
- Department of Medical Oncology, CHUV University Hospital, Lausanne, Switzerland
| | - Anders Sundin
- Department of Radiology, Institution of Surgical Sciences, Uppsala University Hospital, Sweden
| | - Frederico Costa
- Department of Medical Oncology, Sirio-Libanes Hospital, Sao Paulo, Brazil
| | - Marianne Pavel
- Department of Medicine 1, Division of Endocrinology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Clarisse Dromain
- Department of Radiology, CHUV University Hospital, Lausanne, Switzerland
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19
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Wang M, Chen C, Jemielita T, Anderson J, Li XN, Hu C, Kang SP, Ibrahim N, Ebbinghaus S. Are tumor size changes predictive of survival for checkpoint blockade based immunotherapy in metastatic melanoma? J Immunother Cancer 2019; 7:39. [PMID: 30736858 PMCID: PMC6368769 DOI: 10.1186/s40425-019-0513-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 01/16/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND In oncology clinical development, objective response rate, disease control rate and early tumor size changes are commonly used as efficacy metrics for early decision-making. However, for immunotherapy trials, it is unclear whether these early efficacy metrics are still predictive of long-term clinical benefit such as overall survival. The goal of this paper is to identify appropriate early efficacy metrics predictive of overall survival for immunotherapy trials. METHODS Based on several checkpoint blockade based immunotherapy studies in metastatic melanoma, we evaluated the predictive value of early tumor size changes and RECIST-based efficacy metrics at various time points on overall survival. The cut-off values for tumor size changes to predict survival were explored via tree based recursive partitioning and validated by external data. Sensitivity analyses were performed for the cut-offs. RESULTS The continuous tumor size change metric and RECIST-based trichotomized response metric at different landmark time points were found to be statistically significantly associated with overall survival. The predictive values were higher at Week 12 and 18 than those at Week 24. The percentage of tumor size changes appeared to have comparable or lower predictive values than the RECIST-based trichotomized metric, and a cut-off of approximately 10% tumor reduction appeared to be reasonable for predicting survival. CONCLUSIONS An approximate 10% tumor reduction may be a reasonable cut-off for early decision-making while the RECIST-based efficacy metric remains the primary tool. Early landmark analysis is especially useful for decision making when accrual is fast. Composite response rate (utilizing different weights for PR/CR and SD) may be worth further investigation. TRIAL REGISTRATION Clinical trials gov, NCT01295827 , Registered February 15, 2011; NCT01704287 , Registered October 11, 2012; NCT01866319 , Registered May 31, 2013.
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Affiliation(s)
- Meihua Wang
- Merck & Co., Inc., Kenilworth, NJ, USA.
- BARDS Early Development Statistics - Early Oncology, 351 North Sumneytown Pike, North Wales, 19454, USA.
| | - Cong Chen
- Merck & Co., Inc., Kenilworth, NJ, USA
| | | | | | | | - Chen Hu
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD, USA
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20
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Systemic therapies in patients with advanced well-differentiated pancreatic neuroendocrine tumors (PanNETs): When cytoreduction is the aim. A critical review with meta-analysis. Cancer Treat Rev 2018; 71:39-46. [DOI: 10.1016/j.ctrv.2018.10.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 10/10/2018] [Accepted: 10/12/2018] [Indexed: 12/18/2022]
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