The analysis of rs17249437, rs3742879, rs7140310 polymorphismsof the ARG2 gene in samples of different ethnicityshowed significant linkage disequilibrium between rs17249437and rs3742879 polymorphisms (in Russians Dʹ = 0.76, inTatars Dʹ = 0.85, in Bashkirs Dʹ = 0.9) in all studied groups.Haplotype analysis of ARG2 gene polymorphisms did not findstatistically significant differences in haplotype frequenciesbetween asthma patients and the control group ( p > 0.05). This evidence concerns the gene ARG2 and asthma.