Effect of Vitamin D Supplementation on Breast Cancer Biomarkers: CALGB 70806 (Alliance) Study Design and Baseline Data.

Autor:	Apoe O; Division of Hematology and Oncology, Department of Medicine, University of Vermont, Burlington VT., Jung SH; Alliance Statistics and Data Center, Duke University, Durham, NC., Liu H; Alliance Statistics and Data Center, Mayo Clinic, Rochester, MN., Seisler DK; Alliance Statistics and Data Center, Mayo Clinic, Rochester, MN., Charlamb J; State University of New York Upstate Medical University, Syracuse, NY., Zekan P; Novant Health Forsyth Medical Center, Winston-Salem, NC., Wang LX; Contra Costa Regional Medical Center, Martinez, CA., Unzeitig GW; Doctor's Hospital of Laredo, Laredo, TX., Garber J; Dana-Farber/Partners CancerCare, Boston, MA., Marshall J; Roswell Park Cancer Institute, Buffalo, NY., Wood M; Division of Hematology and Oncology, Department of Medicine, University of Vermont, Burlington VT.
Jazyk:	angličtina
Zdroj:	American journal of hematology/oncology [Am J Hematol Oncol] 2016 Jul; Vol. 12 (7), pp. 4-9.
Abstrakt:	One in eight women will develop breast cancer over their lifetime with 230,000 women diagnosed in 2015. For this reason, breast cancer prevention efforts are essential. Vitamin D, with anticancer properties, may have a role in prevention of some cancers, including breast cancer. This report discusses the rationale, study protocol, and baseline data for a clinical trial of vitamin D and its effects on breast cancer biomarkers. This study was a randomized controlled trial designed to evaluate the effect of a fixed dose of vitamin D on specfic breast cancer biomarkers. Study participants were randomized to take either vitamin D or placebo for a period of 1 year. All participants had mammograms and blood drawn for serum biomarkers. A subset of participants underwent random periareolar fine needle aspiration to draw tissue for biomarkers. From January 2011 to December 2013, 300 premenopausal women, aged 59 or younger, were recruited from 41 institutions across the United States. A total of 102 women underwent random periareolar fine needle aspiration. The last subject completed the trial in January 2015. Baseline vitamin D levels for all participants ranged from 4-72 ng/mL, with 62% of participants being vitamin D deficient at enrollment (≥30 ng/mL or ≥75 nmo-l/L). The mean body mass index was 27.0 kg/m 2 (range 15.1-53.6 kg/m 2 ). 14% and 11.7% of participants were Hispanic or African American, respectively. Accrual and enrollment of participants is feasible for this type of multi-center prevention trial, and it can readily be carried out in a cooperative group setting. Competing Interests: Declaration of conflict: The authors declare that there is no conflict of interest.
Databáze:	MEDLINE
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