A 2014 GWAS of ~1,400 Caucasian men ages 50-70 found that after rs7041, the SNP most significantly associated with fasting serum levels of vitamin D binding protein (VDBP, encoded by the GC gene) is rs705117. The average VDBP levels measured were 6339, 4280, and 2341 nmol/L, for 0, 1, and 2 copies of the rs705117(G) allele.[PMID 24740207]
[PMID 23505139] An analysis of the association between the vitamin D pathway and serum 25-hydroxyvitamin D levels in a healthy Chinese population
[PMID 18593774] Genetic and environmental determinants of 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D levels in Hispanic and African Americans.
[PMID 19255064] Vitamin D-related genes, serum vitamin D concentrations and prostate cancer risk.
[PMID 19543766] Association analyses of vitamin D-binding protein gene with compression strength index variation in Caucasian nuclear families.
[PMID 22785457] Association of vitamin D-related gene polymorphisms with manifestation of vitamin D deficiency in children.