Mian Li1, Peizhan Chen, Jingquan Li, Ruiai Chu, Dong Xie, Hui Wang. 1. Key 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.
Abstract
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.
CONTEXT: Circulating levels of 25-hydroxyvitamin D [25(OH)D] may affect the prognosis of cancerpatients; 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 cancerpatients. 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 cancerpatients 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 cancerpatients, 0.63 (95% CI = 0.51-0.77) for breast cancerpatients, and 0.48 (95% CI = 0.36-0.64) for lymphomapatients. 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 cancerpatients. CONCLUSIONS: The results indicate that cancerpatients with higher circulating 25(OH)D levels at or near the time of diagnosis have better outcomes.
Authors: Johanna E Torfadottir; Thor Aspelund; Unnur A Valdimarsdottir; Mary Frances Cotch; Laufey Tryggvadottir; Tamara B Harris; Vilmundur Gudnason; Hans-Olov Adami; Lorelei A Mucci; Edward L Giovannucci; Meir J Stampfer; Laufey Steingrimsdottir Journal: Cancer Causes Control Date: 2019-02-25 Impact factor: 2.506
Authors: Cheng Peng; Yujing J Heng; Donghao Lu; Natalie C DuPre; Kevin H Kensler; Kimberly Glass; Oana A Zeleznik; Peter Kraft; David Feldman; Susan E Hankinson; Kathryn Rexrode; A Heather Eliassen; Rulla M Tamimi Journal: Cancer Epidemiol Biomarkers Prev Date: 2020-04-01 Impact factor: 4.254