The majority of ICSRs reported cladribine as the only suspected drug, and the most commonly reported PTs were “Drug-induced liver injury”, “Hyperbilirubinaemia”, “Pyrexia”, “Hepatic function abnormal”, “Pancytopenia”, “Alanine aminotransferase increased” and “Liver disorder”. The gene discussed is GPT; the disease is Hyperbilirubinemia.