[The influence of the vitamin D3 level in the blood serum of lactase gene polymorphism on the development of chronic polypous rhinosinusitis].

The objective of the present study was to elucidate the possible correlations between the vitamin D level in the blood serum and lactase gene polymorphism (LCT-13910 T>C) in the patients presenting with chronic polypous rhinosinusitis (CPRS). The study included 50 patients with this condition and 14 subjects comprising the control group. The variants of lactase gene polymorphism (LCT-13910 T>C) were identified with the use of polymerase chain reaction (PCR) in real time.