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Cancer survival 4 percent more likely with just a little more vitamin D (4 ng) - meta-analysis July 2014

The Impacts of Circulating 25-Hydroxyvitamin D Levels on Cancer Patient Outcomes: A Systematic Review and Meta-Analysis.

J Clin Endocrinol Metab. 2014 Apr 29:jc20134320.
Li M1, Chen P, Li J, Chu R, Xie D, Wang H.
1Key Laboratory of Food Safety Research (M.L., P.C., J.L., R.C., D.X., H.W.), Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, China; Key Laboratory of Food Safety Risk Assessment (D.X., H.W.), Ministry of Health, Beijing 100021, China; and School of Life Science and Technology (D.X., H.W.), Shanghai Tech University, Shanghai, 200031, China.

Context: Circulating levels of 25-hydroxyvitamin D [25(OH)D] may affect the prognosis of cancer patients; however, the epidemiological results are not consistent.

Objective: To perform a meta-analysis of all published studies to assess the associations of circulating 25(OH)D levels measured at or near the time of diagnosis and outcomes for cancer patients.

Data Sources: Searches of the PubMed and MEDLINE databases were performed and updated to December 2013. Study Selection: Studies reporting an association between circulating 25(OH)D levels at or near the time of diagnosis and outcomes for the patients were included. Data Extraction: Data extraction was performed independently by two authors, and conflicts were resolved by a third investigator.

Data Synthesis: Included in the meta-analysis were 25 studies with 17 332 cases. Significant associations between circulating 25(OH)D levels at or near the time of diagnosis and the outcomes for cancer patients were found. The pooled hazard ratio for the highest vs the lowest quartile of circulating 25(OH)D levels was

  • 0.55 (95% confidence interval [CI] = 0.33-0.91) for overall survival of colorectal cancer patients,
  • 0.63 (95% CI = 0.51-0.77) for breast cancer patients, and
  • 0.48 (95% CI = 0.36-0.64) for lymphoma patients.

Higher 25(OH)D levels were significantly associated with reduced cancer-specific mortality for patients with colorectal cancer (P = .005) and lymphoma (P < .001) and improved disease-free survival for patients with breast cancer (P < .001) or lymphoma (P < .05). A 10-nmol/L increment in circulating 25(OH)D levels conferred a hazard ratio of 0.96 (95% CI = 0.95-0.97) for overall survival of the cancer patients.

Conclusions: The results indicate that cancer patients with higher circulating 25(OH)D levels at or near the time of diagnosis have better outcomes.
PMID: 24780061

Press Release April 29, 2014 Endocine Society

25 studies measured vitamin D levels at time of cancer diagnosis
Strongest association: breast cancer, lymphoma and colorectal cancer.
Less strong association: lung cancer, gastric cancer, prostate cancer, leukemia, melanoma or Merkel cell carcinoma,

"The Impacts of Circulating 25-Hydroxyvitamin D Levels on Cancer Patient Outcomes: A Systematic Review and Meta-Analysis,"
is scheduled to appear in the July issue of JCEM.


See also VitaminDWiki

derived from Grassroots 2013

Previous graph overlaid with the slope shown in meta-analysis
Image
Note: the base data is for INCIDENCE and the red arrow is for SURVIVAL

Attached files

ID Name Comment Uploaded Size Downloads
3865 Cancer 4 4.gif admin 01 May, 2014 15:13 23.31 Kb 843
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