Our results showed that only the SNP BsmI [rs1544410 C> T] was associated with the disease with a significantly higher frequency of the CC genotype (57%, n = 280) in the asthmatic groups compared with controls(49.2% n = 244)It was also found that the frecuency of CT genotype was 35.6% in cases, n = 175, compared with the controls (43.8%, n = 217), p = 0.031.