Pts were randomized 1:1, stratified by IGHV mutation and del(11q) status, to I+V (3 cycles ibrutinib 420 mg/d, followed by 12 cycles I+V with venetoclax...At 3 mo after end of treatment (EOT+3), rate of uMRD was significantly higher for I+V vs Clb+O in BM (51.9% vs 17.1%; p < 0.0001) and peripheral blood (PB; 54.7% vs 39.0%; p = 0.0259).