This is an open-label, single-arm, phase II study which will assess the safety and efficacy of BGB16673 in combination with sonrotoclax as a time-limited approach for participants with treatment-naive CLL/SLL.
Patients with a diagnosis of previously untreated CLL/SLL meeting iwCLL 2018 indication for treatment (Note: patients who receive steroids and/or CD20 monoclonal antibody for cytoreduction in those patients presenting with significantly elevated WBC count or significant adenopathy/organomegaly and those who previously received steroids/CD20 monoclonal antibody for immune cytopenias are eligible to enroll; Washout of 4 weeks applies for CD20 monoclonal antibody and dose of prednisone (or equivalent) should be less than 20mg/day by day 1 of study initiation)
Age ≥ 18 years
Eastern Cooperative Oncology Group (ECOG) Performance status of 0-2
Adequate hepatic function a. Total bilirubin ≤1.5 x upper limit of normal (ULN) or ≤3 x ULN for patients with Gilbert's disease or documented disease involvement of liver (In pts with elevated total bilirubin due to increased indirect bilirubin, pts with direct bilirubin ≤1.5 x ULN are eligible) b. ALT and AST ≤3.0 x ULN, or ≤5.0 x ULN if documented disease involvement of liver
Major surgery within 4 weeks prior to the first dose of study drugs
Uncontrolled active systemic infection
Known positive serology for human immunodeficiency virus (HIV)
Active hepatitis B infection (defined as the presence of detectable HBV DNA, HBe antigen or HBs antigen). Patients with serologic evidence of prior vaccination (HBsAg negative, anti-HBs antibody positive, anti-HBc antibody negative) are eligible. Patients who are HBsAg negative/HBsAb positive but HBcAb positive are eligible, provided HBV DNA is negative and they are willing to take appropriate anti-viral prophylaxis