Changes in vitamin D and calcium metabolism markers in patients undergoing adjuvant chemotherapy for breast cancer

BMC Cancer

Célia Touraine¹  Lise Roca¹  Manon Metge²  Hélène de Forges³  Lobna Rifai⁴  Véronique D’Hondt⁵  William Jacot⁵  Stéphane Pouderoux⁵  Séverine Guiu⁵  Nelly Firmin⁵  Marie Viala⁵  Gilles Romieu⁵ 

[1] Biometrics Unit, Institut du Cancer de Montpellier (ICM), Univ. Montpellier;Clinical Research Center, Institut du Cancer de Montpellier (ICM), Univ. Montpellier;Department of Clinical Research and Innovation, Centre Hospitalier Universitaire de Nîmes;Department of Clinical Research and Innovation, Institut du Cancer de Montpellier (ICM), Univ. Montpellier;Department of Medical Oncology, Institut du Cancer de Montpellier (ICM), University of Montpellier;

关键词: Hypercalciuria;    Vitamin D deficiency;    Adjuvant chemotherapy;    Breast cancer;   

DOI  :  10.1186/s12885-021-08563-4

来源: DOAJ

【 摘 要 】

Abstract Background Changes in calcium metabolism and calcium urinary excretion during chemotherapy have not been thoroughly assessed in patients with early breast cancer (EBC), a population who frequently present vitamin D insufficiency. As hypercalciuria is a classical contra-indication to vitamin D (VD) supplementation, this study evaluated changes in VD and calcium metabolism parameters in patients with EBC undergoing adjuvant chemotherapy (CT). Methods In patients with EBC who received six cycles of adjuvant CT, VD and calcium parameters were monitored at inclusion, and then every 3 weeks, at each CT cycle initiation. The primary endpoint was the percentage of patients showing hypercalciuria during adjuvant CT (between Day 1, Cycle 1 [D1C1] and Day 1, Cycle 6 [D1C6]). Results The primary endpoint could be evaluated in 82 patients. Most patients (n = 66, 80.5%) had VD insufficiency (< 30 ng/mL) at baseline. Hypercalciuria was detected in 29 patients (35.4%; 95% CI: 25.6–46.5) between D1C1 and D1C6, but was not clinically significant in any of the affected patients. The percentage of hypercalciuria events was not different between patients with sufficient and insufficient baseline VD levels (34.8% vs. 37.5%), and between patients who received or not VD supplementation (37.5% vs. 34.5%,). Conclusions This comprehensive study on VD and calcium parameter changes in patients with EBC during adjuvant chemotherapy shows that hypercalciuria is a frequent abnormality in this setting, although asymptomatic. Therefore, it should not be considered as a limitation for high dose VD supplementation in this population. Trial registration EudraCT:2014-A01454-43 . Registered 29 august 2016.

【 授权许可】

Unknown