A study conducted in 1759 Caucasian patients (from Germany) diagnosed with breast cancer showed that the mutated homozygous genotype VDR rs731236 (TaqI)-GG had three times more risk of death from the disease than the VDR rs731236 (TaqI)-AA genotype in the study cohort (ptrend = 0.023, HR = 2.80, 95% CI = 1.10–7.20; GG vs. AA) [32]. The gene discussed is VDR; the disease is breast cancer.