• MRD negativity was evaluated using ASO-PCR and was defined as having achieved <1 CLL cell per 10,000 leukocytes

MRD=minimal residual disease; ITT=intent-to-treat; CR=complete response; CRi=complete response with incomplete marrow recovery; ASO-PCR=allele-specific oligonucleotide polymerase chain reaction; CLL=chronic lymphocytic leukemia.