CDHR3 and asthma: There were significant differences between clusters in GSDMA SNP rs4795408 (p = 0.04), CDHR3 SNP rs6967330 (p = 0.01) and ANAXA1 SNP rs116849664 (p = 0.04) (Table 1), with asthma risk alleles being overrepresented in C2 and C4.