Efficacy and Safety of Zanubrutinib in Relapsed or Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma

Key Inclusion Criteria:

1. Confirmed diagnosis with at least one criterion for treatment according toInternational workshop on chronic lymphocytic leukemia (IWCLL)

2. Eastern Cooperative Oncology Group (ECOG) performance status of 0-2

3. Measurable disease by contrast enhanced computerized tomography / magnetic resonanceimaging (CT/MRI).

4. Previously treated with a minimum of 1 prior line of standardchemotherapy-containing regimen (with completion of ≥2 treatment cycles).

5. Documented failure to achieve at least partial response (PR) or documented diseaseprogression after response to the most recent treatment regimen. Refractory diseaseis defined as treatment failure (stable disease, non-response, progressive disease [PD]) or disease progression within 6 months after the most recent prior therapy (Hallek et al, 2008).

6. Neutrophils ≥ 0.75 x 109/L independent of growth factor support within 7 days ofstudy entry

7. Platelets ≥ 50 x 109/L, independent of growth factor support or transfusion within 7days of study entry

8. Creatinine clearance of ≥ 30 ml/min (as estimated by the Cockcroft-Gault equation orestimated glomerular filtration rate [eGFR] from the Modification of Diet in RenalDisease [MDRD])

9. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤3 x ULN

10. Bilirubin ≤2 x ULN (unless documented Gilbert's syndrome)

11. International normalized ratio (INR) ≤1.5 and activated partial thromboplastin time (APTT) ≤1.5 x ULN.

12. Participants may be enrolled who relapse after autologous stem cell transplant ifthey are at least 6 months after transplant.

13. Life expectancy of >4 months

14. Echocardiogram (ECHO) must demonstrate left ventricular ejection fraction (LVEF) ≥50%; (AHA, 2016)

Key Exclusion Criteria:

1. Current or history of central nervous system (CNS) lymphoma

2. Prior exposure to a Bruton's tyrosine kinase (BTK) inhibitor

3. Prior corticosteroids given in excess of prednisone 10 mg/day or its equivalent withantineoplastic intent within 7 days.

4. Major surgery within 4 weeks of screening

5. Not recovered from toxicity of any prior anti-cancer therapy to <Grade 1 (except foralopecia, absolute neutrophil count (ANC) and platelets.

6. History of other active malignancies within 2 years of study entry, with exceptionof (1) adequately treated in-situ carcinoma of cervix; (2) localized basal cell orsquamous cell carcinoma of skin; (3) previous malignancy confined and treatedlocally (surgery or other modality) with curative intent

7. Currently active clinically significant cardiovascular disease

8. QTcF >480 msecs based on Fridericia's formula or other significant electrocardiogramabnormalities including second degree atrioventricular (AV) block Type II, or thirddegree AV block

9. Unable to swallow capsules or disease significantly affecting gastrointestinalfunction such as malabsorption syndrome, resection of the stomach or small bowel,symptomatic inflammatory bowel disease, or partial or complete bowel obstruction

10. Active infection including infections requiring oral or intravenous anti-microbials

11. Known human immunodeficiency virus (HIV), or active hepatitis B or hepatitis Cinfection (detected positive by polymerase chain reaction [PCR]).

12. Has received allogenic hematopoietic stem cell transplantation prior to enrollment

13. Any life-threatening illness, medical condition or organ system dysfunction which,in the investigator's opinion, could compromise the participants's safety, or putthe study at risk

14. Requires ongoing treatment with any medication which is a strong cytochrome P450,family 3, subfamily A (CYP3A) inhibitor or strong CYP3A inducer

15. Known or clinically suspected Richter's transformation at the time of study entry

16. History of stroke or intracranial hemorrhage within 6 months prior to enrollment

NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.