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TP53-aberrant chronic lymphocytic leukemia (CLL) responds to Bruton tyrosine kinase (BTK) inhibitors and to venetoclax plus an anti-CD20 antibody or a BTK inhibitor, although the durations of response are shorter than among other CLL subtypes.
In the prior industry-sponsored, multicenter, open-label CLL2-GIVe trial (NEJM JW Oncol Hematol 2022 Mar 24 and Blood 2022; 139:1318), treatment with obinutuzumab, ibrutinib, and venetoclax induced high response rates in previously untreated patients with CLL and del(17p) and/or TP53 mutation at 24 months.
Investigators now report a final analysis of the phase 2 CLL2-GIVe trial after a median observation time of 38.5 months. Among 41 patients, 58% had both TP53 mutation and del(17p), 37% had TP53 mutati…