There were also no significant differences in the plasma BDNF levels between healthy individuals (p = 0.52) or asthma patients (p = 0.23) carrying the G allele and TT genotype, as well as between healthy (p = 0.36) or asthmatic carriers (p = 0.21) of T allele and GG homozygous genotype (Table 5). The gene discussed is BDNF; the disease is asthma.