ASCO Annual Meeting
May 15, 2013
In early, ongoing research, the drug, idelalisib helped to shrink tumors for patients with recurrent or treatment-resistant chronic lymphocytic leukemia (CLL). CLL is a slow-growing cancer and many patients do not need treatment until they start having symptoms. However, after treatment, most patients will have the disease come back, called recurrent or relapsed CLL. About 20% of patients will develop treatment-resistant or refractory CLL, meaning the disease comes back quickly or the original treatment did not work.