A polymorphism in the receptor gene of vitamin D (VDR) significantly influences reduction in osteoporosis risk, medical experts found, following the meta-analysis of results from 26 studies. The significance of this finding may allow physicians to innovate new diagnostic and treatment methods, aside from the traditional treatments involving bisphosphonates which have led to multi-district litigations regarding its side-effects, like Fosamax cases involving its manufacturer Merck.
The researchers found that people who possessed dual copies of the recessive b allele (bb genotype) for the VDR RS1544410 single nucleotide polymorphism (SNP) were 39 percent less likely to develop osteoporosis than those who presented having dual copies of the dominant allele B (BB genotype).
The same VDR was found to be responsible for influencing differences in bone mineral density and circulating osteocalcin levels in 1992.