The patient was treated with a single dose of intravenous zoledronic acid (0.0125 mg/kg) with significant clinical improvement and improved mobilization, but demonstrated persistently abnormal liver enzymes (AST 71, ALT 67, GGT 124 U/L), anemia (Hb 106 g/L), and raised inflammatory markers (ESR 82 mm/hr) and gamma globulins (IgG 30.1 g/L, IgM 3.3 g/L). This evidence concerns the gene GSTM1 and anemia.