KCNB2 and childhood onset asthma: An intergenic SNP on chromosome 16 had the most significant association with childhood asthma [rs1867612 (p = 1.55×10−6)], followed by an intronic SNP in potassium voltage-gated channel, Shab-related subfamily, member 2 (KCNB2; OMIM 607738) on chromosome 8 [rs2247572 (p = 1.94×10−6)] and two intergenic SNPs on chromosome 20 [rs6063725 (p = 3.52×10−6)] and rs720810 (p = 5.13×10−6)] with only moderate linkage disequilibrium (LD) (r2 = 0.59).