Creatinine >4 No recent AML bleeding No hepatic abnormalities (liver tests 2fold) Hematocrit<27% Thrombocytopenia (<100.000/mm3) Leukopenia (<3000/mm3) Ischemic cardiopathy Recent surgery (2 months prior to enrollment) Pregnancy Serum cholesterol over 7.8 mmol/l or hypertriglyceridemia fasten(>4.6 mmol/l) non controlled with drugs malignancy in the previous 2 years allergy to macrolides