IFNL3 and cryohydrocytosis: In MC, IL28B CC genotype frequency was found similar to that in blood donors (Figure 3); nonetheless, the carriage of TT genotype in MC (15.1%) was weakly higher than that among blood donors (7.9%, Fisher's test, P = 0.019) but not significantly higher than that among CHC patients (12.9, Fisher's test, P = 0.319).