An increased rate of adverse events, including deaths, have been reported in clinical trials with idelalisib (Zydelig) in combination with other cancer medicines, the U.S. Food and Drug Administration announced.
Gilead Sciences, Inc. has confirmed that they are stopping six clinical trials in patients with chronic lymphocytic leukemia, small lymphocytic lymphoma and indolent non-Hodgkin lymphomas. The FDA is reviewing the findings of the clinical trials and will communicate new information as necessary, according to the FDA press release.
Idelalisib is not approved for previously untreated chronic lymphocytic leukemia. It is approved by the FDA for the treatment of:
• Relapsed chronic lymphocytic leukemia, in combination with rituximab, in patients for whom rituximab alone would be considered appropriate therapy due to other co-morbidities.
• Relapsed follicular B-cell non-Hodgkin lymphoma in patients who have received at least two prior systemic therapies.
• Relapsed small lymphocytic lymphoma in patients who have received at least two prior systemic therapies.
Adverse events involving idelalisib should be reported to the FDA MedWatch program, the release advised.
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