Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Open-label, Phase 3 Study of the Combination of Ibrutinib Plus Venetoclax Versus Chlorambucil Plus Obinutuzumab for the First-line Treatment of Subjects With Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL).
Brief Summary: The purpose of this study is to assess progression-free survival (PFS) from treatment with ibrutinib plus venetoclax (I+VEN) compared with obinutuzumab plus chlorambucil (G-Clb) as assessed by an Independent Review Committee (IRC).


Options:
A: Inclusion Criteria:

* Adults \>/=18 years
* Documented Cluster of Differentiation Antigen 20 (CD20) + B-Cell Chronic Lymphocytic Lymphoma (B-CLL)
* Previously untreated Chronic Lymphocytic Leukemia (CLL) requiring treatment according to the National Cancer Institute (NCI) criteria
* Total Cumulative Illness Rating Scale (CIRS) \> 6 and/or creatinine clearance \< 70 ml/min

Exclusion Criteria:

* Prior CLL therapy
* Transformation of CLL to aggressive Non-Hodgkin's Lymphoma (NHL) (Richter's transformation)
* History of other malignancy unless the malignancy has been in remission without treatment for \>/=2 years prior to enrolment, and except for carcinoma in situ of the cervix, basal or squamous cell skin cancer, surgically treated low-grade prostate cancer, or ductal carcinoma in situ (DCIS) of the breast treated with lymphectomy alone
* Positive hepatitis serology (HBV, HCV) or positive HIV or Human T Cell Leukemia Virus (HTLV) testing
* Patients with active infection requiring systemic treatment
B: Inclusion Criteria:

1. Males or females of 65 years of age or greater. Patients between the ages of 65 and 70 years of age must have 1 or more of the following comorbidities that may preclude the use of frontline chemo-immunotherapy with fludarabine, cyclophosphamide, or rituximab:

   * creatinine clearance \< 70 mL/min using the Cockcroft-Gault equation
   * platelet count \< 100,000/μL or hemoglobin \< 10 g/dL
   * clinically apparent autoimmune cytopenia (autoimmune hemolytic anemia or immune thrombocytopenia)
   * ECOG performance score = 1 or 2
2. Diagnosis of CLL/SLL that meets IWCLL diagnostic criteria (Hallek 2008)
3. Active disease meeting at least 1 of the following IWCLL criteria (Hallek 2008) for requiring treatment:

   * Evidence of progressive marrow failure as manifested by the development of, or worsening of, anemia and/or thrombocytopenia Massive, progressive, or symptomatic splenomegaly
   * Massive nodes or progressive or symptomatic lymphadenopathy
   * Progressive lymphocytosis
   * Autoimmune hemolytic anemia and/or immune thrombocytopenia that is poorly responsive to corticosteroids or standard therapy
   * Constitutional symptoms
4. Measurable nodal disease by computed tomography (CT)
5. ECOG performance status of 0-2
6. Life expectancy \> 4 months from randomization
7. Adequate hematologic function, defined as absolute neutrophil count (ANC) ≥ 1,000/μL (independent of growth factor support for at least 7 days prior to screening) and platelet count ≥ 50,000/μL (independent of transfusion and growth factor support for at least 7 days prior to screening)
8. Adequate hepatic function, defined as serum aspartate transaminase (AST) and alanine transaminase (ALT) \< 2.5 x upper limit of normal (ULN), and total bilirubin ≤ 1.5 x ULN
9. Adequate renal function, defined as estimated creatinine clearance ≥ 30 mL/min using the Cockcroft-Gault equation
10. Willingness to receive all outpatient treatment, all laboratory monitoring, and all radiological evaluations at the institution that administers study drug for the entire study
11. Willingness of male patients, if sexually active with a female of childbearing potential, to use an effective barrier method of contraception during the study and for 3 months following the last dose of study drug
12. Ability to provide written informed consent and to understand and comply with the requirements of the study

Exclusion Criteria:

1. Known involvement of the central nervous system by lymphoma or leukemia
2. History or current evidence of Richter's transformation or prolymphocytic leukemia
3. Documentation of deletion of the short arm of chromosome 17: del(17p13.1) in more than 20% of cells examined on any pretreatment fluorescence in situ hybridization (FISH) or cytogenetic evaluation
4. Uncontrolled autoimmune hemolytic anemia or idiopathic thrombocytopenic purpura
5. Any previous treatment (chemotherapy, radiotherapy, and/or monoclonal antibodies) intended specifically to treat CLL/SLL
6. Received any immunotherapy, vaccine, or investigational drug within 4 weeks prior to randomization
7. Corticosteroid use within 1 week prior to first dose of study drug, with the exception of inhaled, topical, or other local administrations. Patients requiring systemic steroids at daily doses \> 20 mg prednisone (or corticosteroid equivalent, see Appendix N), or those who are administered steroids for leukemia control or white blood cell (WBC)-count-lowering are excluded.
8. Major surgery within 4 weeks prior to randomization
9. History of prior malignancy, with the exception of the following:

   * malignancy treated with curative intent and with no evidence of active disease present for more than 3 years prior to screening and felt to be at low risk for recurrence by treating physician
   * adequately treated nonmelanomatous skin cancer or lentigo maligna melanoma without current evidence of disease
   * adequately treated cervical carcinoma in situ without current evidence of disease
10. Currently active, clinically significant cardiovascular disease or a history of myocardial infarction within 6 months prior to randomization
11. Inability to swallow capsules or tablets, or disease significantly affecting gastrointestinal function
12. Uncontrolled active systemic fungal, bacterial, viral, or other infection or requirement for intravenous (IV) antibiotics
13. Known history of infection with human immunodeficiency virus (HIV)
14. Serologic status reflecting active hepatitis B or C infection
15. History of stroke or intracranial hemorrhage within 6 months prior to enrollment
16. Current life-threatening illness, medical condition, or organ-system dysfunction that could compromise patient safety or put the study at risk
17. Requirement for anticoagulation with warfarin
18. Requirement for treatment with a strong CYP3A4/5 and/or CYP2D6 inhibitor
C: Inclusion Criteria:

* Adult participants who are: (a) greater than or equal to (\>=) 65 years old or, (b) 18 to 64 years old and have at least 1 of the following:

  1. Cumulative Illness Rating Scale (CIRS) score \> 6
  2. Creatinine clearance (CrCl) estimated less than (\<) 70 milliliter per minute (mL/min) using Cockcroft-Gault equation
* Diagnosis of chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) that meets International Workshop on Chronic Lymphocytic Leukemia (iwCLL) criteria
* Measurable nodal disease (by computed tomography \[CT\]), defined as at least one lymph node \> 1.5 centimeter (cm) in longest diameter
* Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) Grade less than or equal to (\<=) 2
* Active CLL/SLL requiring treatment per the iwCLL criteria

Exclusion Criteria:

* Prior anti-leukemic therapy for CLL or SLL
* Presence of deletion of the short arm of chromosome 17 (del17p) or known TP53 mutation detected at a threshold of \>10 percent (%) variable allele frequency (VAF)
* Major surgery within 4 weeks of first dose of study treatment
* Known bleeding disorders (example, von Willebrand's disease or hemophilia)
* Central nervous system (CNS) involvement or suspected Richter's syndrome
D: Inclusion Criteria:

* PRE-REGISTRATION (STEP 0)
* All patients are REQUIRED to be pre-registered to A041202 in order to submit peripheral blood to the Alliance Hematologic Malignancy Biorepository (HEME) for central Zap-70 methylation. This specimen submission is mandatory prior to registration as results will be used for stratification
* REGISTRATION (STEP 1)
* Patients must be diagnosed with CLL in accordance with International Workshop on Chronic Lymphocytic Leukemia (IWCLL) 2008 criteria that includes all of the following:

  * \>= 5 x 10\^9 B lymphocytes (5000/uL) in the peripheral blood
  * On morphologic review, the leukemic cells must be small mature lymphocytes, and prolymphocytes must not exceed 55% of the blood lymphocytes
  * CLL cells on immunophenotype (performed locally) must reveal a clonal B-cell population, which express the B cell surface markers of CD19 and CD20, as well as the T-cell antigen CD5; patients with bright surface immunoglobulin expression or lack of CD23 expression in \> 10% of cells must lack t(11;14) translocation by interphase cytogenetics
* Patients must be intermediate or high-risk Rai stage CLL

  * Intermediate risk (formerly Rai stage I/II) is defined by lymphocytosis plus enlarged lymph nodes at any site, with or without hepatomegaly or splenomegaly
  * High risk (formerly Rai stage III/IV) is defined by lymphocytosis with or without enlarged nodes and spleen plus disease-related anemia (hemoglobin \< 11 g/dL) or thrombocytopenia (platelet count \< 100 x 10\^9/L) that is not attributable to autoimmune hemolytic anemia or thrombocytopenia
* Patients must meet criteria for treatment as defined by IWCLL 2008 guidelines which includes at least one of the following criteria:

  * Evidence of marrow failure as manifested by the development or worsening of anemia or thrombocytopenia (not attributable to autoimmune hemolytic anemia or thrombocytopenia)
  * Massive (\>= 6 cm below the costal margin), progressive or symptomatic splenomegaly
  * Massive nodes (\>= 10 cm) or progressive or symptomatic lymphadenopathy
  * Autoimmune anemia and/or thrombocytopenia that is poorly responsive to standard therapy
  * Constitutional symptoms, which include any of the following:

    * Unintentional weight loss of 10% or more within 6 months
    * Significant fatigue
    * Fevers \> 100.5 degrees F for 2 weeks or more without evidence of infection
    * Night sweats \> 1 month without evidence of infection
* Prior treatment

  * Patients must not have had prior therapy for CLL (except palliative steroids or treatment of autoimmune complications of CLL with rituximab or steroids)
  * Treatment with rituximab and/or high dose corticosteroids for autoimmune complications of CLL must be complete at least 4 weeks prior to enrollment; palliative steroids must be at a dose not higher than 20 mg/day of prednisone or equivalent corticosteroid at the time of registration
* Age \>= 65 years
* Eastern Cooperative Oncology Group (ECOG) performance status 0-2
* Patients with active hepatitis B defined by hepatitis B surface antigen positivity or core antibody positivity in the presence of hepatitis B DNA are not eligible for this study; patients with a positive hepatitis B core antibody but with negative hepatitis B DNA may participate, but must have hepatitis serologies and hepatitis B DNA monitored periodically by the treating physician

  * Intravenous immunoglobulin (IVIG) can cause a false positive hepatitis B serology; if patients receiving routine IVIG have core antibody or surface antigen positivity without evidence of active viremia (negative hepatitis B DNA) they may still participate in the study, but should have hepatitis serologies and hepatitis B DNA monitored periodically by the treating physician
* Patients must not be receiving active systemic anticoagulation with heparin or warfarin; patients must be off warfarin therapy for at least 30 days prior to enrollment
* Patients with class III or class IV heart failure by New York Heart Association, those with unstable angina, and those with uncontrolled arrhythmia are not eligible
* Patients who have had a myocardial infarction, intracranial bleed, or stroke within the past 6 months are not eligible
* Patients with known human immunodeficiency virus (HIV) are eligible if their CD4 count is \>= 350 cells/mm\^3 and if they are not taking prohibited CYP-interacting medications
* Patients must not have any history of Richter's transformation or prolymphocytic leukemia (prolymphocytes in blood \> 55%)
* Patients must not require more than 20 mg prednisone or equivalent corticosteroid daily
* Patients must not have uncontrolled active systemic infection requiring intravenous antibiotics
* Patients must not have continued requirement for therapy with a strong cytochrome P450 3A4/5 (CYP3A4/5) inhibitor or inducer
* Patients must not have a known allergy to mannitol
* Patients must not have prior significant hypersensitivity to rituximab (not including infusion reactions)
* Patients may not have had major surgery within 10 days of enrollment, or minor surgery within 7 days of enrollment; examples of minor surgery include dental surgery, insertion of a venous access device, skin biopsy, or aspiration of a joint; the decision about whether a surgery is major or minor can be made at the discretion of the treating physician
* Absolute neutrophil count (ANC) \>= 1,000/uL unless due to bone marrow involvement
* Aspartate aminotransferase (AST) or alanine aminotransferase (AST) =\< 2.5 x upper limits of normal except if due to disease infiltration of the liver
* Bilirubin =\< 1.5 x upper limits of normal (unless due to liver involvement, hemolysis, or Gilbert's disease)
* Creatinine clearance \>= 40 mL/min

  * To be calculated by modified Cockcroft-Gault formula
* Platelet count (untransfused) \>= 30,000/uL

Answer: C