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Start Over Author "Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD)" Topic 0302 clinical medicine
9 results on '"Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD)"'

1. PXR Modulates the Prostate Cancer Cell Response to Afatinib by Regulating the Expression of the Monocarboxylate Transporter SLC16A1

Author

Hanane Agherbi, Fanny Leenhardt, Litaty Mbatchi, Aurélie Garcin, Philippe Pourquier, Alexandre Evrard, Candice Marchive, Alice Matheux, Matthieu Gassiot, Nadine Houede, Abdelhay Boulahtouf, Gaëlle Fromont, Patrick Balaguer, Eve Combes, Céline Gongora, Eric Fabbrizio, Institut de Recherche en Cancérologie de Montpellier (IRCM - U1194 Inserm - UM), CRLCC Val d'Aurelle - Paul Lamarque-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Gongora, Céline, Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Institut du Cancer de Montpellier (ICM), Nutrition, croissance et cancer (U 1069) (N2C), Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), and Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD)

Subjects
0301 basic medicine, Cancer Research, Afatinib, PXR, [SDV]Life Sciences [q-bio], afatinib, [SDV.CAN]Life Sciences [q-bio]/Cancer, [SDV.MHEP.UN]Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology, digestive system, Article, 03 medical and health sciences, Prostate cancer, 0302 clinical medicine, [SDV.CAN] Life Sciences [q-bio]/Cancer, Prostate, medicine, kinase inhibitors, RC254-282, Pregnane X receptor, Chemistry, Kinase, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, biomarkers, Dabrafenib, medicine.disease, prostate cancer, [SDV.MHEP.UN] Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology, digestive system diseases, 3. Good health, Dasatinib, 030104 developmental biology, medicine.anatomical_structure, Oncology, [SDV.SP.PHARMA] Life Sciences [q-bio]/Pharmaceutical sciences/Pharmacology, 030220 oncology & carcinogenesis, [SDV.SP.PHARMA]Life Sciences [q-bio]/Pharmaceutical sciences/Pharmacology, Cancer research, SLC16A1, Erlotinib, Biomakers, medicine.drug
Abstract

Simple Summary Many kinase inhibitors have been tested as potential alternatives for the treatment of castration-resistant prostate cancers. However, none of these clinical trials led to drug approval despite interesting responses. Our study reveals that genes involved in drug metabolism and their master regulator PXR (Pregnane X Receptor) could be responsible, at least in part, for these disappointing results as they can modulate tumor cell response to specific kinase inhibitors. We found that stable expression of PXR sensitized prostate cancer cells to erlotinib, dabrafenib, and afatinib, while it rendered cells resistant to dasatinib and had no effect for other inhibitors tested. We also report for the first time that sensitization to afatinib is due to an alteration in drug transport that involves the SLC16A1 monocarboxylate transporter. Together, our results further indicate that PXR might be considered as a biomarker of response to kinase inhibitors in castration-resistant prostate cancers. Abstract Resistance to castration is a crucial issue in the treatment of metastatic prostate cancer. Kinase inhibitors (KIs) have been tested as potential alternatives, but none of them are approved yet. KIs are subject of extensive metabolism at both the hepatic and the tumor level. Here, we studied the role of PXR (Pregnane X Receptor), a master regulator of metabolism, in the resistance to KIs in a prostate cancer setting. We confirmed that PXR is expressed in prostate tumors and is more frequently detected in advanced forms of the disease. We showed that stable expression of PXR in 22Rv1 prostate cancer cells conferred a resistance to dasatinib and a higher sensitivity to erlotinib, dabrafenib, and afatinib. Higher sensitivity to afatinib was due to a ~ 2-fold increase in its intracellular accumulation and involved the SLC16A1 transporter as its pharmacological inhibition by BAY-8002 suppressed sensitization of 22Rv1 cells to afatinib and was accompanied with reduced intracellular concentration of the drug. We found that PXR could bind to the SLC16A1 promoter and induced its transcription in the presence of PXR agonists. Together, our results suggest that PXR could be a biomarker of response to kinase inhibitors in castration-resistant prostate cancers.

Published
2021
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2. Feasibility and efficacy of a supervised home-based physical exercise program for metastatic cancer patients receiving oral targeted therapy: study protocol for the phase II/III - UNICANCER SdS 01 QUALIOR trial

Author

Sophie Abadie-Lacourtoisie, Isabelle Durand-Zaleski, Jean-Marc Descotes, C. Lefeuvre-Plesse, Nadine Houede, Nathalie Menneveau, Amélie Anota, Claire Garnier-Tixidre, Carole Helissey, Laetitia Stefani, Soazig Nenan, Florence Joly, Isabelle Rieger, Alain Zannetti, Sébastien Salas, Hôpital Côte de Nacre [CHU Caen], CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), Centre Régional de Lutte contre le Cancer François Baclesse [Caen] (UNICANCER/CRLC), UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU), Centre Eugène Marquis (CRLCC), Institut Daniel Hollard [Grenoble], HIA Bégin, Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Centre Hospitalier de Cholet (CHC), Hôpital de la Timone [CHU - APHM] (TIMONE), Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD), Département d'oncologie médicale [Saint Herblain] (Centre René Gauducheau - ICO), Institut de Cancérologie de l'Ouest [Angers/Nantes] (UNICANCER/ICO), UNICANCER-UNICANCER, CH Annecy Genevois, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Centre de Diagnostic et de Thérapeutique, Hôpital de l’Hôtel-Dieu [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), and CAMI Sport et Cancer

Subjects
Quality of life, Male, Cancer Research, medicine.medical_specialty, Colorectal cancer, Medico-economy, medicine.medical_treatment, Pain, Administration, Oral, Physical exercise, [SDV.CAN]Life Sciences [q-bio]/Cancer, lcsh:RC254-282, Targeted therapy, 03 medical and health sciences, Study Protocol, 0302 clinical medicine, Breast cancer, Internal medicine, Genetics, medicine, Humans, 030212 general & internal medicine, Oral targeted therapy, Neoplasm Metastasis, Lung cancer, Fatigue, business.industry, Cancer, Adherence to treatment, medicine.disease, lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens, Supervised physical exercise programs, 3. Good health, Exercise Therapy, Oncology, 030220 oncology & carcinogenesis, Feasibility Studies, Psychological and cognitive functions, Female, business, Kidney cancer, Metastatic cancer, Supportive care
Abstract

Background Currently, oral targeted therapies are known to be effective and are frequently used to treat metastatic cancer patients, but fatigue is a frequently reported early side effect of these treatments. This fatigue may impact the patient’s treatment adherence and result in a negative impact on quality of life. Physical exercise significantly improved the general well-being and quality of life of advanced cancer patients. However, there is no specific physical activity program adapted for patients with advanced disease. Methods QUALIOR is a two-part, randomized, open-label, and multicenter with two arms phase II/III trial. Patients (phase II: n = 120; phase III: n = 312) with metastatic cancer (breast cancer, kidney cancer, lung cancer, and other cancers [including but not limited to colon cancer, melanoma, sarcoma, or hepatocarcinoma]) treated with a first- or second-line oral targeted therapy without chemotherapy will be included. Patients will be randomized (2:1) to a 3-month supervised home-based standardized physical activity program or to a recommended adapted physical activity (via a booklet). The primary objective of the phase II is to evaluate the feasibility of the supervised program. The primary objective of the phase III is the evaluation of the benefit of the supervised home-based program compare to the recommended program in terms of fatigue and quality of life at 3 months. The secondary objectives aim to evaluate the impact of the supervised program on fatigue over time, pain, physical capacities, psychosocial and cognitive functions, general quality of life, frequency of dose reduction and patients’ adherence to the targeted therapy, overall survival, and progression-free survival. This study will also evaluate the medico-economic impact of supervised program compared to the recommended adapted physical activity program. Discussion The aim of this study is to evaluate home-based physical exercise program for metastatic cancer patients treated with oral targeted therapies to help patients to cope with fatigue and improve quality of life. Trial registration This trial was registered in ClinicalTrials.gov since May 2017 (NCT03169075).

Published
2020
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3. Impact of iterative reconstructions on image quality and detectability of focal liver lesions in low-energy monochromatic images

Author

Jean Paul Beregi, Djamel Dabli, Aymeric Hamard, J.M. Teissier, Joël Greffier, J. Frandon, Hugo Pasquier, Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Aide à la Décision pour une Médecine Personnalisé - Laboratoire de Biostatistique, Epidémiologie et Recherche Clinique - EA 2415 (AIDMP), Université Montpellier 1 (UM1)-Université de Montpellier (UM), Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD), General Electric Medical Systems [Buc] (GE Healthcare), and General Electric Medical Systems

Subjects
MESH: Radiation Dosage, Carcinoma, Hepatocellular, Image quality, Multidetector Computed tomography, Biophysics, General Physics and Astronomy, [SDV.CAN]Life Sciences [q-bio]/Cancer, Iterative reconstruction, Radiation Dosage, Dose level, MESH: Carcinoma, Hepatocellular / diagnostic imaging, Imaging phantom, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Low energy, [INFO.INFO-IM]Computer Science [cs]/Medical Imaging, Humans, Radiology, Nuclear Medicine and imaging, Image resolution, Physics, MESH: Humans, Phantoms, Imaging, business.industry, Liver Neoplasms, General Medicine, MESH: Liver / diagnostic imaging, MESH: Tomography, X-Ray Computed / methods, MESH: Liver Neoplasms / diagnostic imaging, MESH: Phantoms, Imaging, Liver, Dual-energy, 030220 oncology & carcinogenesis, Task-based image quality assessment, Radiographic Image Interpretation, Computer-Assisted, MESH: Radiographic Image Interpretation, Computer-Assisted / methods, Spatial frequency, Monochromatic color, Tomography, X-Ray Computed, Nuclear medicine, business
Abstract

International audience; Purpose: To assess the impact of iterative reconstructions on image quality and detectability of focal liver lesions in low-energy monochromatic images from a Fast kV-Switching Dual Energy CT (KVSCT) platform.Methods: Acquisitions on an image-quality phantom were performed using a KVSCT for three dose levels (CTDIvol:12.72/10.76/8.79 mGy). Raw data were reconstructed for five energy levels (40/50/60/70/80 keV) using Filtered Back Projection (FBP) and four levels of ASIR (ASIR30/ASIR50/ASIR70/ASIR100). Noise power spectrum (NPS) and task-based transfer function (TTF) were measured before computing a Detectability index (d') to model the detection task of liver metastasis (LM) and hepatocellular carcinoma (HCC) as function of keV.Results: From 40 to 70 keV, noise-magnitude was reduced on average by -68% ± 1% with FBP; -61% ± 3% with ASIR50 and -52% ± 6% with ASIR100. The mean spatial frequency of the NPS decreased when the energy level decreased and the iterative level increased. TTF values at 50% decreased as the energy level increased and as the percentage of ASIR increased. The detectability of both lesions increased with increasing dose level and percentage of ASIR. For the LM, d' peaked at 70 keV for all reconstruction types, except for ASIR70 at 12.72 mGy and ASIR100, where d' peaked at 50 keV. For HCC, d' peaked at 60 keV for FBP and ASIR30 but peaked at 50 keV for ASIR50, ASIR70 and ASIR100.Conclusions: Using percentage of ASIR above 50% at low-energy monochromatic images could limit the increase of noise-magnitude, benefit from spatial resolution improvement and hence enhance detectability of subtle low contrast focal liver lesions such as HCC.

Published
2020
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4. PD-L1 expression and pattern of immune cells in pre-treatment specimens are associated with disease-free survival for HR-NMIBC undergoing BCG treatment

Author

Morgan Rouprêt, Evanguelos Xylinas, Leonor Chaltiel, Yann Neuzillet, Jeanne Piana-Thomassin, Serge Brunelle, Géraldine Pignot, Mathieu Roumiguié, Juliette Cotte, François Audenet, Eva Compérat, Gregory Verhoest, Nadine Houede, Stéphane Larré, Alexandra Masson-Lecomte, Pierre Colin, François Xavier Nouhaud, Institut Universitaire du Cancer de Toulouse - Oncopole (IUCT Oncopole - UMR 1037), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital de Rangueil, CHU Toulouse [Toulouse], Groupe de Recherche Clinique Onco-Urologie Prédictive [CHU Tenon] (GRC 5), CHU Tenon [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut Claudius Regaud, UNIROUEN - UFR Santé (UNIROUEN UFR Santé), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU), CHU Rouen, Normandie Université (NU), CHU Pontchaillou [Rennes], Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Ramsay Générale de Santé - Hôpital Privé La Louvière, Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD), Centre Hospitalier Universitaire de Reims (CHU Reims), AP-HP - Hôpital Bichat - Claude Bernard [Paris], Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Hôpital Foch [Suresnes], Université de Versailles Saint-Quentin-en-Yvelines - UFR Sciences de la santé Simone Veil (UVSQ Santé), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Salvy-Córdoba, Nathalie, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)

Subjects
Adult, Male, Nephrology, medicine.medical_specialty, T-Lymphocytes, Urology, medicine.medical_treatment, 030232 urology & nephrology, [SDV.CAN]Life Sciences [q-bio]/Cancer, Risk Assessment, Gastroenterology, [SDV.MHEP.UN]Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology, B7-H1 Antigen, Disease-Free Survival, PD-L1/PD-1 checkpoint inhibitor, 03 medical and health sciences, 0302 clinical medicine, [SDV.CAN] Life Sciences [q-bio]/Cancer, Adjuvants, Immunologic, Internal medicine, Tumor Cells, Cultured, medicine, Humans, Neoplasm Invasiveness, BCG, Stage (cooking), Aged, Retrospective Studies, Aged, 80 and over, Bladder cancer, business.industry, Proportional hazards model, Carcinoma in situ, Immunotherapy, Middle Aged, medicine.disease, [SDV.MHEP.UN] Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology, 3. Good health, Log-rank test, Administration, Intravesical, Urinary Bladder Neoplasms, 030220 oncology & carcinogenesis, Concomitant, BCG Vaccine, Female, business, Non-muscle invasive bladder cancer
Abstract

International audience; Purpose: To assess the association between PD-L1 expression and disease-free survival (DFS) in High-Risk Non-Muscle Invasive Bladder Cancer (HR-NMIBC) patients treated with intravesical Bacillus Calmette-Guerin (BCG) instillations (IBI).Methods: Retrospective study in five French centres between 2001 and 2015. Participants were 140 patients with histologically confirmed HR-NMIBC. All patients received induction and maintenance IBI. Pathological stage/grade, concomitant carcinoma in situ, lesion number and tumour size were recorded. CD3, CD8 and PD-L1 expression in tumour cells and in T cells in the tumour microenvironment (TME) was determined immunohistochemically. Median follow-up was 54.2 months. The primary outcome measure was DFS. Univariable and multivariable analyses were performed using the log rank test and Cox proportional hazards model.Results: Of the 140 NMIBC, 52 (37.1%) were Ta, 88 (62.9%) were T1 and 100% were high grade. Median number of maintenance IBI was six (range 1-30). Twenty-five (17.9%) patients had recurrence/progression. In multivariable analysis, age (HR 1.07 [95% CI 1.02-1.13], p = 0.009), PD-L1 expression in tumour cells (HR per 10 units = 1.96 [95% CI 1.28-3.00], p = 0.02) and CD3/CD8 ratio (HR per 10 units = 3.38 [95% CI 1.61-7.11], p = 0.01) were significantly associated with DFS. However, using the cut-off corresponding for each PD-L1 antibodies, PD-L1 + status was not associated with DFS.Conclusion: Despite an association between PD-L1 expression and BCG failure in HR-NMIBC, the PD-L1 + status was not a prognostic factor in the response of BCG. Moreover, we confirmed the key role played by the IC within the microenvironment in BCG treatment. These findings highlighted the rationale to combine BCG and PD-L1/PD-1 antibodies in early bladder cancer.

Published
2020
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5. Traitement des oligometastases et oligoprogression

Author

I. Latorzeff, O. Riou, M.-P. Farcy-Jacquet, C. Lemanski, P. Boisselier, D. Azria, C. Llacer, Céline Bourgier, Pascal Fenoglietto, M. Charissoux, CCSD, Accord Elsevier, Institut de Recherche en Cancérologie de Montpellier (IRCM - U1194 Inserm - UM), CRLCC Val d'Aurelle - Paul Lamarque-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Institut du Cancer de Montpellier (ICM), Clinique Pasteur [Toulouse], Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), and Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD)

Subjects
Gynecology, medicine.medical_specialty, business.industry, [SDV]Life Sciences [q-bio], Oligométastases, 3. Good health, Stereotactic radiotherapy, [SDV] Life Sciences [q-bio], 03 medical and health sciences, 0302 clinical medicine, Oncology, 030220 oncology & carcinogenesis, Radiothérapie stéréotaxique, medicine, Radiology, Nuclear Medicine and imaging, business, Oligometastases
Abstract

Resume Nous proposons dans cette revue de rapporter l’impact de la radiotherapie stereotaxique chez les patients ayant un cancer oligometastatique ou en oligoprogression en termes de survie sans progression metastatique et globale, et d’identifier quelle est la place de cette modalite de radiotherapie au sein du parcours–patient.

Published
2019
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6. Clinical and molecular response to interferon-α therapy in essential thrombocythemia patients with CALR mutations

Author

Serge Carillo, Aurélie Chauveau, Stéphane Giraudier, Jean-Jacques Kiladjian, Emmanuelle Verger, Valérie Ugo, Mohammed A. Yassin, Bruno Cassinat, Christine Chomienne, Marie-Hélène Schlageter, Jean-Christophe Ianotto, Eric Legouffe, Nader Al-Dewik, Christine Dosquet, Unite de Biologie Cellulaire (Biol Cell - ST LOUIS - PARIS), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Groupe Hospitalier Saint Louis - Lariboisière - Fernand Widal [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Laboratoire d'hématologie (Labo Hémato - BREST), Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Unité de Formation de Recherche de Médecine (UFRM - BREST), Université de Brest (UBO), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Laboratoire d'hématologie, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Institut de cancérologie et d'hématologie, Hôpital Morvan [Brest]-Centre Hospitalier Régional Universitaire de Brest (CHRU Brest), Groupe d'Etude de la Thrombose de Bretagne Occidentale (GETBO), Université de Brest (UBO)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO)-Université de Brest (UBO), Department of Hematology and Bone Marrow Transplant (DHBMT - DOHA - QATAR), National Center for Cancer Care and Research (NCCCR - DOHA - QATAR), Qatar Medical Genetic Center (QMGC - DOHA - QATAR), Hamad medical corporation, Département de Cytologie Clinique (Dep Cyto Clin - NIMES), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Service d'hématologie et oncologie médicale, Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Lapeyronie-Université de Montpellier (UM), ONCOGARD - NIMES, Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD), Université d'Angers - Faculté de médecine (UA UFR Médecine), Université d'Angers (UA)-Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM), Laboratoire d'Hématologie Biologique (Hémato - ANGERS), Centre Hospitalier Universitaire d'Angers (CHU Angers), Hématologie -Immunologie -Cibles thérapeutiques, Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre d'Investigations Cliniques, Hopital Saint-Louis [AP-HP] (AP-HP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hôpital Lapeyronie-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université Montpellier 1 (UM1)-Université de Montpellier (UM), Université de Brest (UBO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Brestois Santé Agro Matière (IBSAM), Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] (IBMM), and Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Male, Oncology, [SDV]Life Sciences [q-bio], DNA Mutational Analysis, Gene mutation, medicine.disease_cause, Biochemistry, Somatic evolution in cancer, Polyethylene Glycols, 0302 clinical medicine, Hydroxyurea, interferon-a therapy, 0303 health sciences, Mutation, essential thrombocythemia, biology, Remission Induction, Hematology, Middle Aged, Isocitrate Dehydrogenase, Recombinant Proteins, 3. Good health, DNA-Binding Proteins, 030220 oncology & carcinogenesis, Female, Thrombocythemia, Essential, CALR mutations, Adult, medicine.medical_specialty, Adolescent, Immunology, Alpha interferon, IDH2, Dioxygenases, Clonal Evolution, Young Adult, 03 medical and health sciences, Proto-Oncogene Proteins, Internal medicine, medicine, Humans, Allele, Alleles, 030304 developmental biology, Aspirin, Essential thrombocythemia, Interferon-alpha, Off-Label Use, Cell Biology, Genes, p53, medicine.disease, Clone Cells, Repressor Proteins, biology.protein, Calreticulin, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Follow-Up Studies
Abstract

International audience; Myeloproliferative neoplasms are clonal disorders characterized by the presence of several gene mutations associated with particular hematologic parameters, clinical evolution, and prognosis. Few therapeutic options are available, among which interferon α (IFNα) presents interesting properties like the ability to induce hematologic responses (HRs) and molecular responses (MRs) in patients with JAK2 mutation. We report on the response to IFNα therapy in a cohort of 31 essential thrombocythemia (ET) patients with CALR mutations (mean follow-up of 11.8 years). HR was achieved in all patients. Median CALR mutant allelic burden (%CALR) significantly decreased from 41% at baseline to 26% after treatment, and 2 patients even achieved complete MR. In contrast, %CALR was not significantly modified in ET patients treated with hydroxyurea or aspirin only. Next-generation sequencing identified additional mutations in 6 patients (affecting TET2, ASXL1, IDH2, and TP53 genes). The presence of additional mutations was associated with poorer MR on CALR mutant clones, with only minor or no MRs in this subset of patients. Analysis of the evolution of the different variant allele frequencies showed that the mutated clones had a differential sensitivity to IFNα in a given patient, but no new mutation emerged during treatment. In all, this study shows that IFNα induces high rates of HRs and MRs in CALR-mutated ET, and that the presence of additional nondriver mutations may influence the MR to therapy.

Published
2015
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7. Androgen deprivation therapy plus docetaxel and estramustine versus androgen deprivation therapy alone for high-risk localised prostate cancer (GETUG 12): a phase 3 randomised controlled trial

Author

Nadine Houede, Claude Linassier, Philippe Beuzeboc, Paule Chinet-Charrot, Laura Faivre, Loic Mourey, Aude Flechon, Frank Priou, Gael Deplanque, Jean-Marc Ferrero, Jean-Louis Davin, Christine Theodore, Muriel Habibian, Brigitte Laguerre, Remy Delva, Anne-Laure Martin, Ivan Krakowski, Agnès Laplanche, Karim Fizazi, Frederic Rolland, Jean-Luc Labourey, Stéphane Culine, Jean-François Berdah, Gwenaelle Gravis, François Lesaunier, Isabelle Cojean-Zelek, Eric Legouffe, Alain Ravaud, Marjorie Baciuchka, Stéphane Oudard, Jean-Léon Lagrange, Institut Gustave Roussy (IGR), Centre Régional de Lutte contre le Cancer François Baclesse (CRLC François Baclesse ), Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), Institut de cancérologie de l'Ouest - Paul Papin (ICO - Paul Papin), Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Institut de cancérologie de l'Ouest - Nantes (ICO Nantes), CRLCC Paul Papin-CRLCC René Gauducheau, Centre Hospitalier Départemental - Hôpital de La Roche-sur-Yon, Centre Antoine Lacassagne, CRLCC Antoine Lacassagne, Centre Hospitalier Régional Universitaire de Nîmes (CHRU Nîmes), Institut de Recherche en Cancérologie de Montpellier (IRCM - U1194 Inserm - UM), CRLCC Val d'Aurelle - Paul Lamarque-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Institut Claudius Regaud, CRLCC Institut Claudius Regaud, Hôpital Foch [Suresnes], Institut de Cancérologie de Lorraine - Alexis Vautrin (ICL), Hôpital privé Toulon Hyères : Sainte Marguerite, Hôpital de la Timone [CHU - APHM] (TIMONE), CRLCC Eugène Marquis (CRLCC), Centre Léon Bérard [Lyon], Hôpital Saint-André, Groupe Hospitalier Diaconesses Croix Saint-Simon, Hôpital Européen Georges Pompidou [APHP] (HEGP), Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP), CHU Limoges, CRLCC Henri Becquerel, ONCOGARD - NIMES, Institut de Cancérologie du GARD (Instit Cancéro - GARD), Hôpital Henri Mondor, Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), Hôpital Saint-Joseph, Institut Curie, Institut Sainte Catherine [Avignon], UNICANCER [Paris], Hôpital Saint-Louis, Université Paris Diderot - Paris 7 (UPD7)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP), Centre Régional de Lutte contre le Cancer François Baclesse [Caen] (UNICANCER/CRLC), UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU), Institut de Cancérologie de l'Ouest [Angers/Nantes] (UNICANCER/ICO), UNICANCER, Centre de Lutte contre le Cancer Antoine Lacassagne [Nice] (UNICANCER/CAL), UNICANCER-Université Côte d'Azur (UCA), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Institut de Cancérologie de Lorraine - Alexis Vautrin [Nancy] (UNICANCER/ICL), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Centre de Lutte Contre le Cancer Henri Becquerel Normandie Rouen (CLCC Henri Becquerel), Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Institut Curie [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7), Normandie Université (NU)-UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN), Université Côte d'Azur (UCA)-UNICANCER, Université Paris Diderot - Paris 7 (UPD7)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), and Centre Hospitalier Départemental - Hôpital de La Roche-sur-Yon (CHD Vendée)

Subjects
Male, medicine.medical_specialty, Maximum Tolerated Dose, Population, 030232 urology & nephrology, Urology, [SDV.CAN]Life Sciences [q-bio]/Cancer, Docetaxel, Kaplan-Meier Estimate, Disease-Free Survival, Drug Administration Schedule, Androgen deprivation therapy, 03 medical and health sciences, Prostate cancer, 0302 clinical medicine, Antineoplastic Combined Chemotherapy Protocols, medicine, Humans, Neoplasm Invasiveness, education, Aged, Neoplasm Staging, Proportional Hazards Models, education.field_of_study, Dose-Response Relationship, Drug, business.industry, Standard treatment, Goserelin, Prostatic Neoplasms, Cancer, Androgen Antagonists, Middle Aged, Prostate-Specific Antigen, medicine.disease, Survival Analysis, 3. Good health, Surgery, Treatment Outcome, Oncology, 030220 oncology & carcinogenesis, Estramustine, Taxoids, France, Neoplasm Recurrence, Local, business, Follow-Up Studies, medicine.drug
Abstract

International audience; BACKGROUND:Early risk-stratified chemotherapy is a standard treatment for breast, colorectal, and lung cancers, but not for high-risk localised prostate cancer. Combined docetaxel and estramustine improves survival in patients with castration-resistant prostate cancer. We assessed the effects of combined docetaxel and estramustine on relapse in patients with high-risk localised prostate cancer.METHODS:We did this randomised phase 3 trial at 26 hospitals in France. We enrolled patients with treatment-naive prostate cancer and at least one risk factor (ie, stage T3-T4 disease, Gleason score of ≥8, prostate-specific antigen concentration >20 ng/mL, or pathological node-positive). All patients underwent a staging pelvic lymph node dissection. Patients were randomly assigned (1:1) to either androgen deprivation therapy (ADT; goserelin 10·8 mg every 3 months for 3 years) plus four cycles of docetaxel on day 2 at a dose of 70 mg/m(2) and estramustine 10 mg/kg per day on days 1-5, every 3 weeks, or ADT only. The randomisation was done centrally by computer, stratified by risk factor. Local treatment was administered at 3 months. Neither patients nor investigators were masked to treatment allocation. The primary endpoint was relapse-free survival in the intention-to-treat population. Follow-up for other endpoints is ongoing. This study is registered with ClinicalTrials.gov, number NCT00055731.FINDINGS:We randomly assigned 207 patients to the ADT plus docetaxel and estramustine group and 206 to the ADT only group. Median follow-up was 8·8 years (IQR 8·1-9·7). 88 (43%) of 207 patients in the ADT plus docetaxel and estramustine group had an event (relapse or death) versus 111 (54%) of 206 in the ADT only group. 8-year relapse-free survival was 62% (95% CI 55-69) in the ADT plus docetaxel and estramustine group versus 50% (44-57) in the ADT only group (adjusted hazard ratio [HR] 0·71, 95% CI 0·54-0·94, p=0·017). Of patients who were treated with radiotherapy and had data available, 31 (21%) of 151 in the ADT plus docetaxel and estramustine group versus 26 (18%) of 143 in the ADT only group reported a grade 2 or higher long-term side-effect (p=0·61). We recorded no excess second cancers (26 [13%] of 207 vs 22 [11%] of 206; p=0·57), and there were no treatment-related deaths.INTERPRETATION:Docetaxel-based chemotherapy improves relapse-free survival in patients with high-risk localised prostate cancer. Longer follow-up is needed to assess whether this benefit translates into improved metastasis-free survival and overall survival.FUNDING:Ligue Contre le Cancer, Sanofi-Aventis, AstraZeneca, Institut National du Cancer.

Published
2015
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8. Phase II Study of a Radiotherapy Total Dose Increase in Hypoxic Lesions Identified by 18 F-Misonidazole PET/CT in Patients with Non–Small Cell Lung Carcinoma (RTEP5 Study)

Author

Romain Modzelewski, Mathieu Salaün, Fabrice Denis, Naji Salem, Pierre Bohn, Jean-Pierre Muratet, Pierre Olivier, Sophie Guillemard, Nicolas Aide, Enrique Chajon, Laurent Vervueren, Pierre Vera, Alina Berriolo Riedinger, Claire Houzard, Marie Lacombe, Françoise Mornex, Etienne Martin, Maximilien Vermandel, Nathalie Charrier, P.O. Kotzki, Frédéric Courbon, Anne Devillers, Véronique Beckendorf, S. Danhier, Carole Massabeau, Marc-André Mahé, Eric Dansin, P. Boisselier, Philippe Chaumet-Riffaud, Philippe Fernandez, Sébastien Thureau, Amaury Paumier, Marie-Pierre Farcy Jacquet, Hélène Kolesnikov-Gauthier, Amandine Pallardy, Sébastien Hapdey, Bernard Dubray, Service de médecine nucléaire [Rouen], CRLCC Haute Normandie-CRLCC Henri Becquerel, Equipe Quantification en Imagerie Fonctionnelle (QuantIF-LITIS), Laboratoire d'Informatique, de Traitement de l'Information et des Systèmes (LITIS), Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Normandie Université (NU), Centre de Lutte Contre le Cancer Henri Becquerel Normandie Rouen (CLCC Henri Becquerel), Service de Biophysique et de Médecine Nucléaire, AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), Therapies Interventionnelles Assistees Par l'Image et la Simulation, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille, Droit et Santé, Service de Médecine Nucléaire [Nantes], Hôpital Laennec, CRLCC René Gauducheau, Institut de Cancérologie de l'Ouest [Angers/Nantes] (UNICANCER/ICO), UNICANCER, Institut de Recherche en Cancérologie de Montpellier (IRCM - U1194 Inserm - UM), CRLCC Val d'Aurelle - Paul Lamarque-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Service de médecine nucléaire [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Lab-STICC_UBO_CACS_MOCS, Université de Brest (UBO)-Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Centre Alexis Vautrin (CAV), Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), CRLCC Eugène Marquis (CRLCC), Département de médecine nucléaire [Rennes], Unité de recherche interdisciplinaire pour la prévention et le traitement des cancers (ANTICIPE), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN)-Centre Régional de Lutte contre le Cancer François Baclesse [Caen] (UNICANCER/CRLC), UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-UNICANCER-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de médecine nucléaire [CHU Caen], CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Université de Caen Normandie (UNICAEN), Centre Régional de Lutte contre le Cancer François Baclesse [Caen] (UNICANCER/CRLC), UNICANCER-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU), Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS), Centre Jean Bernard (ILC Le Mans), Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), Hôpital Henri Mondor, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Centre Régional de Lutte contre le Cancer Oscar Lambret [Lille] (UNICANCER/Lille), UNICANCER-Université Lille Nord de France (COMUE), Institut Universitaire du Cancer de Toulouse - Oncopole (IUCT Oncopole - UMR 1037), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de Recherches en Cancérologie de Toulouse (CRCT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD), Centre Hospitalier Lyon Sud [CHU - HCL] (CHLS), Hospices Civils de Lyon (HCL), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), CRLCC Paul Papin, Centre des Sciences de la Terre, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Service de pneumologie, oncologie thoracique et soins intensifs respiratoires [Rouen], Hôpital Charles Nicolle [Rouen]-CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Université Le Havre Normandie (ULH), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Université Le Havre Normandie (ULH), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA), Département de radiothérapie et de physique médicale, CRLCC Henri Becquerel, Département de Radiothérapie, Centre René Gauducheau-Institut de Cancérologie de l'Ouest (ICO)-Centre de Lutte Contre le Cancer Nantes Atlantique 'René Gauducheau' (CLCC), Institut de cancérologie de l'Ouest - Nantes (ICO Nantes), CRLCC Paul Papin-CRLCC René Gauducheau, CRLCC Val d'Aurelle - Paul Lamarque-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN)-Centre Régional de Lutte contre le Cancer François Baclesse (CRLC François Baclesse ), Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de Radiation oncologie, CGFL, Centre Régional de Lutte contre le cancer - Centre Georges-François Leclerc (CRLCC - CGFL), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and Department of Radiation Oncology, Centre Hospitalier Universitaire Lyon Sud, Pierre Benite, France

Subjects
Misonidazole, positron emission tomography, medicine.medical_treatment, Phases of clinical research, [SDV.CAN]Life Sciences [q-bio]/Cancer, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Carcinoma, medicine, Radiology, Nuclear Medicine and imaging, fluoro-deoxy-D-glucose, Lung cancer, Survival rate, Radiation oncologist, Pneumonitis, f-misonidasole, business.industry, hypoxia, medicine.disease, 3. Good health, radiotherapy dose, Radiation therapy, lung cancer, chemistry, 030220 oncology & carcinogenesis, business, Nuclear medicine
Abstract

International audience; See an invited perspective on this article on page 1043.This multicenter phase II study investigated a selective radiotherapy dose increase to tumor areas with significant (18)F-misonidazole ((18)F-FMISO) uptake in patients with non-small cell lung carcinoma (NSCLC). Methods: Eligible patients had locally advanced NSCLC and no contraindication to concomitant chemoradiotherapy. The (18)F-FMISO uptake on PET/CT was assessed by trained experts. If there was no uptake, 66 Gy were delivered. In (18)F-FMISO-positive patients, the contours of the hypoxic area were transferred to the radiation oncologist. It was necessary for the radiotherapy dose to be as high as possible while fulfilling dose-limiting constraints for the spinal cord and lungs. The primary endpoint was tumor response (complete response plus partial response) at 3 mo. The secondary endpoints were toxicity, disease-free survival (DFS), and overall survival at 1 y. The target sample size was set to demonstrate a response rate of 40% or more (bilateral α = 0.05, power 1-β = 0.95). Results: Seventy-nine patients were preincluded, 54 were included, and 34 were (18)F-FMISO-positive, 24 of whom received escalated doses of up to 86 Gy. The response rate at 3 mo was 31 of 54 (57%; 95% confidence interval [CI], 43%-71%) using RECIST 1.1 (17/34 responders in the (18)F-FMISO-positive group). DFS and overall survival at 1 y were 0.86 (95% CI, 0.77-0.96) and 0.63 (95% CI, 0.49-0.74), respectively. DFS was longer in the (18)F-FMISO-negative patients (P = 0.004). The radiotherapy dose was not associated with DFS when adjusting for the (18)F-FMISO status. One toxic death (66 Gy) and 1 case of grade 4 pneumonitis (>66 Gy) were reported. Conclusion: Our approach results in a response rate of 40% or more, with acceptable toxicity. (18)F-FMISO uptake in NSCLC patients is strongly associated with poor prognosis features that could not be reversed by radiotherapy doses up to 86 Gy.

Published
2017
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9. Feasibility of Fibered Monitoring System for Pulsed Dose-Rate Facilities Based on Radioluminescence of SrS:Ce,Sm Phosphor

Author

Jean-Roch Vaillé, B. Brichard, D. Benoit, P. Garcia, S. Matias-Vaille, J. Lautissier, J. Isturiz, Laurent Dusseau, Methods and engineering of multiscale computing from atom to continuum ( MICMAC ), Inria Paris-Rocquencourt, Institut National de Recherche en Informatique et en Automatique ( Inria ) -Institut National de Recherche en Informatique et en Automatique ( Inria ) -École des Ponts ParisTech ( ENPC ), Institut d’Electronique et des Systèmes ( IES ), Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Electronique, Informatique et Image ( Le2i ), Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, ONCOGARD - NIMES, Institut de Cancérologie du GARD ( Instit Cancéro - GARD ), Centre d'oncologie et de radiothérapie du parc [Dijon], Centre d'Etude de l'Energie Nucléaire ( SCK-CEN ), Centre Spatial Universitaire de Montpellier-Nîmes ( CSU ), Université de Montpellier ( UM ), Institut d’Electronique et des Systèmes (IES), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Radiations et composants (RADIAC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Electronique, Informatique et Image [UMR6306] (Le2i), Université de Bourgogne (UB)-École Nationale Supérieure d'Arts et Métiers (ENSAM), Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD), Centre d'Etude de l'Energie Nucléaire (SCK-CEN), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Arts et Métiers (ENSAM), and HESAM Université (HESAM)-HESAM Université (HESAM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement

Subjects
Nuclear and High Energy Physics, medicine.medical_specialty, Photoluminescence, Photon, Materials science, Optical fiber, Phosphor, Signal, 030218 nuclear medicine & medical imaging, law.invention, 03 medical and health sciences, 0302 clinical medicine, law, medicine, Dosimetry, Medical physics, Electrical and Electronic Engineering, ComputingMilieux_MISCELLANEOUS, business.industry, Radioluminescence, [SPI.TRON]Engineering Sciences [physics]/Electronics, [ SPI.TRON ] Engineering Sciences [physics]/Electronics, Nuclear Energy and Engineering, 030220 oncology & carcinogenesis, Optoelectronics, business, Luminescence
Abstract

International audience; The possibility to monitor pulsed dose-rate facilities by means of real-time fibered dosimetry is investigated. A system based on the luminescence of the SrS:Ce,Sm is used to monitor pulses from a medical accelerator with four different dose-rates. The RL signal is characterized using a dedicated acquisition system. The RL recorded is linear with dose-rate and dose. The stem effect due to both Cerenkov emission and photoluminescence in the fiber was also investigated with 18 MV photons and 12 MeV electrons.

Published
2008
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