Mild to moderate musculoskeletal pain during treatment (severe cases occasionally appear), dysuria, thrombocytopenia, splenomegaly, anemia, epistaxis, cephalgia, diarrhea,vasculitis, medullary bone pain, nausea/vomiting, alopecia, neutropenic fever, mucositis, fatigue, anorexia, dyspnea, headache, cough, skin rash, chest pain, stomatitis, constipation, pain, & reversible elevation in serum uric acid, LDH enzyme, alkaline phosphatase, γ-glutamyl transpeptidase.