KRT18 and cryohydrocytosis: Reis et al. [36] in a study involving 76 patients with CHC after OLTx (orthotopic liver transplantation) measured M30S, M30H CK-18, and M65 CK-18 concentrations and found that these markers were able to discriminate between acute reinfection and acute transplant rejection (P = 0.048, P = 0.001, and P = 0.010).