We performed a genetic association analysis in several KD subgroups categorized by clinical characteristics using the KD-associated variants of the B lymphoid tyrosine kinase (<i>BLK</i>; rs6993775) and Fc gamma receptor II a (<i>FCGR2A</i>; rs1801274) in a large number of case (n=1,011) and control (n=4,533) samples.
Six single-nucleotide polymorphisms (SNPs) in three loci were associated significantly with KD susceptibility (P<1.0 × 10<sup>-5</sup>), including the previously reported BLK locus (rs6993775, odds ratio (OR)=1.52, P=2.52 × 10<sup>-11</sup>).