MUC4 and paroxysmal nocturnal hemoglobinuria: Furthermore, the MUC4 mutation rate in the PNH‐TE subgroup was significantly greater (eight out of 12, 66.7%) than that in the PNH non‐TE subgroup (one out of 13, 7.7%) (p = .003), suggesting that MUC4 mutations are closely related to TEs in PNH patients.