Genentech has received reports of several cases of microangiopathic hemolytic anemia (MAHA) in patients with solid tumors receiving Avastin (bevacizumab) in combination with Sutent (sunitinib malate  from Pfizer) In a dose-escalation study combining Avastin and Sutent  5 of 12 patients at the highest Sutent dose level were diagnosed with MAHA