Side Effect Revealed: Heart risk found in leukemia drug

Since its introduction a few years ago, the cancer drug imatinib has given patients with chronic myelogenous leukemia an unprecedented chance at long-term survival. But studies of the drug in people and mice reveal an unexpected risk of heart failure lurking beneath imatinib’s benefits.

A research team led by Thomas Force of Jefferson Medical College in Philadelphia evaluated 10 patients who suffered moderate-to-severe heart failure while taking imatinib, which is marketed as Gleevec by the drug company Novartis.