VDR and myopathy: The study showed a four times greater risk of myopathy in individuals homozygous for the C allele in the VDR polymorphism TaqI (rs731236) (RR 4.37, 95 % CI: 1.9–10.1, p <0.01) and in patients with 25OHD levels <50 nmol/L (RR 4.2; 95 % CI: 1.7–10.2; p <0.01) [65].