Patients enrolled in the study with the accessible diagnostic results. A total of 215 patients were referred with potential ALPS diagnosis. The minimal criteria for evaluation were at least 2 major criteria and 1 minor criterion; 140 patients were evaluable. Patients were considered as definite ALPS patients if at least 3 major or at least 2 major and 2 minor criteria were observed. Patients were considered suspected ALPS patients if at least 2 major criteria and 1 minor criterion were observed.