1. A Phase II Multicenter Trial on High-Dose Vitamin D Supplementation for the Correction of Vitamin D Insufficiency in Patients with Breast Cancer Receiving Adjuvant Chemotherapy
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Elodie Chartron, Nelly Firmin, Célia Touraine, Angélique Chapelle, Eric Legouffe, Lobna Rifai, Stéphane Pouderoux, Lise Roca, Véronique D’Hondt, William Jacot, Département d'oncologie Médicale, CRLCC Val d'Aurelle - Paul Lamarque, Institut du Cancer de Montpellier (ICM), Institut Desbrest de santé publique (IDESP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), ONCOGARD - NIMES, Institut de Cancérologie du GARD ICG - CHU Nîmes (Instit Cancéro - GARD), Service d'hématologie et oncologie médicale, Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Lapeyronie-Université de Montpellier (UM), 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), and UNICANCER - Institut régional du Cancer Montpellier Val d'Aurelle (ICM)
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Adult ,Nutrition and Dietetics ,Nutrition. Foods and food supply ,[SDV.CAN]Life Sciences [q-bio]/Cancer ,Breast Neoplasms ,Middle Aged ,Vitamin D Deficiency ,Article ,adjuvant chemotherapy ,Treatment Outcome ,breast cancer ,Chemotherapy, Adjuvant ,Dietary Supplements ,Humans ,TX341-641 ,Female ,Vitamin D ,vitamin D insufficiency ,Biomarkers ,Food Science ,hypercalciuria ,Aged - Abstract
International audience; Breast cancer (BC) treatments induce vitamin D (VD) insufficiency and bone metabolism changes, resulting in osteoporosis and skeletal morbidity risk. We report the results of a bicentric phase II trial (ClinicalTrials.gov Identifier: NCT04091178) on the safety and efficacy of high-dose oral VD supplementation for VD deficiency correction in 44 patients with early BC treated with adjuvant chemotherapies. Patients received one dose of 100,000 IU 25-OH VD every 3 weeks from day 1 of cycle 1 to day 1 of cycle 5. The primary endpoint was the percentage of patients achieving serum 25-OH VD concentration normalization on day 1 of cycle 6 (D1C6). Secondary endpoints were safety, VD and calcium parameters at baseline and during chemotherapy, and identification of predictive biomarkers of VD normalization on D1C6. On D1C6, 21 patients (47.7%, 95% CI: 33.0–62.8) achieved VD normalization. No VD-related clinical toxicity was reported. However, 13 patients (29.5%) presented asymptomatic grade 1 hypercalciuria, leading to interruption of the high-dose oral VD supplementation in 10, followed by a rapid reduction in serum VD concentration. No baseline clinical factor was predictive of VD normalization on D1C6. This high-dose VD supplementation appears safe and efficient in patients with early BC receiving adjuvant chemotherapy.
- Published
- 2021
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