Plasma 25-Hydroxyvitamin D Levels and Survival in Patients with Advanced or Metastatic Colorectal Cancer: Findings from CALGB/SWOG 80405 (Alliance).

Journal Article (Clinical Trial, Phase III;Journal Article;Multicenter Study)

PURPOSE: Previous studies have suggested that higher circulating 25-hydroxyvitamin D [25(OH)D] levels are associated with decreased colorectal cancer risk and improved survival. However, the influence of vitamin D status on disease progression and patient survival remains largely unknown for patients with advanced or metastatic colorectal cancer. EXPERIMENTAL DESIGN: We prospectively collected blood samples in 1,041 patients with previously untreated advanced or metastatic colorectal cancer participating in a randomized phase III clinical trial of first-line chemotherapy plus biologic therapy. We examined the association of baseline plasma 25(OH)D levels with overall survival (OS) and progression-free survival (PFS). Cox proportional hazards models were used to calculate hazard ratios (HRs) and confidence intervals (CIs), adjusted for prognostic factors and confounders. RESULTS: At study entry, 63% of patients were vitamin D deficient (<20 ng/mL) and 31% were vitamin D insufficient (20-<30 ng/mL). Higher 25(OH)D levels were associated with an improvement in OS and PFS (Ptrend = 0.0009 and 0.03, respectively). Compared with patients in the bottom quintile of 25(OH)D (≤10.8 ng/mL), those in the top quintile (≥24.1 ng/mL) had a multivariable-adjusted HR of 0.66 (95% CI, 0.53-0.83) for OS and 0.81 (95% CI, 0.66-1.00) for PFS. The improved survival associated with higher 25(OH)D levels was consistent across patient subgroups of prognostic patient and tumor characteristics. CONCLUSIONS: In this large cohort of patients with advanced or metastatic colorectal cancer, higher plasma 25(OH)D levels were associated with improved OS and PFS. Clinical trials assessing the benefit of vitamin D supplementation in patients with colorectal cancer are warranted.

Full Text

Duke Authors

Cited Authors

  • Yuan, C; Sato, K; Hollis, BW; Zhang, S; Niedzwiecki, D; Ou, F-S; Chang, I-W; O'Neil, BH; Innocenti, F; Lenz, H-J; Blanke, CD; Goldberg, RM; Venook, AP; Mayer, RJ; Fuchs, CS; Meyerhardt, JA; Ng, K

Published Date

  • December 15, 2019

Published In

Volume / Issue

  • 25 / 24

Start / End Page

  • 7497 - 7505

PubMed ID

  • 31548349

Pubmed Central ID

  • 31548349

Electronic International Standard Serial Number (EISSN)

  • 1557-3265

Digital Object Identifier (DOI)

  • 10.1158/1078-0432.CCR-19-0877

Language

  • eng

Conference Location

  • United States