Venetoclax-associated interstitial pneumonitis.

Venetoclax is a selective inhibitor of the antiapoptotic protein B-cell lymphoma 2 (BCL-2). It is approved for the treatment of chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL) and acute myeloid leukemia (AML) in combination with chemotherapy or hypomethylating agents. Interstitial pneumonitis due to venetoclax has not been described in the literature. We describe a case of a 79-year-old female who experienced SLL relapse and developed interstitial pneumonitis associated with venetoclax, which completely resolved after discontinuation of the medication.