[BDNF gene RS6265 polymorphism in patients with multiple sclerosis of Tomsk region].

OBJECTIVE:To study the effect of the RS6265 polymorphism of BDNF gene on the risk of development, main clinical characteristics and DMT response in MS patients in Tomsk region. MATERIAL AND METHODS:The study group included 321 patients, the control group consisted of 266 healthy volunteers. Deoxyribonucleic acid (DNA) was isolated from venous blood using the standard phenol-chloroform method. Genotyping was carried out by real-time polymerase chain reaction (PCR) using competing TaqMan probes complementary to the polymorphic nucleotide sequence. RESULTS:Carriage of the C allele and CC genotype of the RS6265 polymorphism of the BDNF gene was found to be a factor determining a more favorable MS course. CONCLUSION:Carriers of the indicated genotype had a low rate of MS progression, a lower frequency of relapses and a less pronounced degree of disability with a comparable MS duration, and significantly more often demonstrated a more optimal response to first and second line of DMT.