Viral, fungal & bacterial infections; benign & malignant neoplasms including lymphomas, skin cancers, AML & myelodysplasia; bone marrow depression, leucopenia, thrombocytopenia, anaemia, agranulocytosis, pancytopenia, aplastic or megaloblastic anaemia, erythroid hypoplasia; reversible pneumonitis; pancreatitis, colitis, diverticulitis & bowel perforation, severe diarrhoea, nausea; cholestasis, life-threatening hepatic damage; alopecia; hypersensitivity reactions.