Gleevec is used to treat chronic myeloid leukemia, a life threatening form of cancer. It is a $2.2 billion drug, posting double-digit growth figures.
The drug helps in prolonging the life of cancer patients. Several Indian pharma firms like Natco, Cipla, Ranbaxy and Hetero produce the generic equivalent.
I didn't even know there was a generic version out there-but probably not available here in the states.