For the interaction pair MST1‐JAK2, the susceptibility to Crohn's disease was 4.34 higher for genotypes with allele G at rs144982232 in MST1 or with allele C at rs1159782 in JAK2 than those with allele A at rs144982232 and T at rs1159782 (odds ratio = 4.34). Here, MST1 is linked to Crohn disease.