Testing the Addition of a New Anti-cancer Drug, Venetoclax, to Usual Chemotherapy for High Grade B-cell Lymphomas

Inclusion Criteria

• Pathologic diagnosis of diffuse large B-cell lymphoma (DLBCL) or high grade B-cell lymphoma (HGBCL).
• Double hit lymphoma (DHL) or double expressing lymphoma (DEL) * DHL is defined as high grade B-cell lymphoma with one of the below: ** Translocations of MYC and BCL2 ** Translocations of MYC and BCL2 and BCL6 (triple hit lymphoma) ** Translocations of MYC and BCL6 without BCL2 translocation BUT with immunohistochemistry (IHC) expression of BCL2 (≥50%) * DEL is defined as DLBCL or high grade B-cell lymphoma not otherwise specified (NOS) with protein expression by IHC of both MYC (>= 40%) and BCL2 (>= 50%) in the absence of dual translocations of both MYC and BCL2). (Double Expressing Lymphoma, DEL). Local determination of fluorescence in situ hybridization (FISH) and IHC will be performed per standardized guidelines and will be acceptable for study entry, but local IHC and FISH results for MYC must be available in order to determine eligibility if enrolling as DEL based on local results
• The diagnosis of DLBCL/HGBCL and assessment of DEL/DHL will be performed per standardized guidelines at local institutions and patients will be enrolled based on local determination. Given the heterogeneity in diagnostic work-up and interpretation, all local determinations will be followed by central confirmation in real time. Diagnostic slides and stains (or recuts/blocks) from all cases will be submitted to a central reference laboratory (Cleveland Clinic Laboratories). Immunostains will be reviewed or repeated (if unavailable or technically unsatisfactory) to confirm double expressing (DE) status. All DE cases will also be investigated for double hit (DH) status, if not already performed. To exclude DHL status, FISH for translocations of MYC (break apart and IGH/MYC dual fusion probes) must be performed (either by referring site or at the central laboratory), along with BCL2 (break apart probes) and BCL6 (break apart probes). Any missing information from the referring site will be supplemented by the central lab on required submitted unstained slides or blocks. Cases submitted as DHL will be accepted as such upon review of submitted laboratory reports. Cases submitted as DHL must demonstrate the presence of a MYC translocation as well as a translocation of BCL2, BCL6, or both. Cases submitted as a DEL must demonstrate appropriate IHC protein expression of MYC and BCL2, and be negative for a MYC translocation by FISH.
• No prior treatment for DLBCL/HGBCL is allowed with the exception of corticosteroids administered for palliation, or a single cycle of either rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) or dose adjusted etoposide, prednisone, vincristine, cyclophosphamide, doxorubicin, and rituximab (DA-EPOCH-R) administered prior to enrollment. This single pre-registration cycle is being allowed to facilitate enrolling patients who required immediate initiation of therapy for rapidly progressing disease, or for patients where FISH or IHC results returned after initiation of chemotherapy rendered them protocol eligible.
• Not pregnant and not nursing, because this study involves an investigational agent whose genotoxic, mutagenic and teratogenic effects on the developing fetus and newborn are unknown. Therefore, for women of childbearing potential only, a negative pregnancy test done =< 14 days prior to registration is required.
• Eastern Cooperative Oncology Group (ECOG) Performance Status 0-2.
• Absolute neutrophil count (ANC) >= 1,000/mm^3. * Unless attributable to lymphoma.
• Platelet count >= 100,000/mm^3. * Unless attributable to lymphoma.
• Creatinine =< 1.5 mg/dL OR calculated (calc.) creatinine clearance >= 50 mL/min. * Unless attributable to lymphoma.
• Total bilirubin =< 2.0 mg/dL. * Unless attributable to lymphoma. * Unless attributable to Gilbert's disease.
• Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =< 3 times institution upper limit of normal (ULN). * Unless attributable to lymphoma.
• Archival tissue must be available for submission in all patients for histopathology review, though participation in correlative substudies is optional.
• No active ischemic heart disease or congestive heart failure, and left ventricular ejection fraction (LVEF) >= 45%.
• No known active human immunodeficiency virus (HIV) disease. Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial.
• No known lymphomatous involvement of the central nervous system (CNS). A lumbar puncture or neuroimaging prior to study enrollment is not required in the absence of neurological signs or symptoms concerning for CNS involvement.
• No active hepatitis B or hepatitis C infection. Patients with prior hepatitis B virus (HBV) exposure (positive HBV core antibody and/or surface antigen) are eligible if they have no detectable viral load, and are taking appropriate prophylactic antiviral therapy to prevent reactivation. Patients with history of hepatitis C virus (HCV) are eligible if they have been treated for HCV and have an undetectable HCV viral load.
• Chronic concomitant treatment with strong inhibitors of CYP3A4 is not allowed on this study. Patients on strong CYP3A4 inhibitors must discontinue the drug for 14 days prior to initiation of protocol therapy.
• Chronic concomitant treatment with strong CYP3A4 inducers is not allowed. Patients must discontinue the drug 14 days prior to the start of study treatment.

PRIMARY OBJECTIVE:

I. To compare the progression-free survival (PFS) of rituximab (R)-chemotherapy plus venetoclax versus R-chemotherapy alone in MYC/BCL2 double-hit and double expressing lymphomas.

SECONDARY OBJECTIVES:

I. To compare the overall survival (OS) of R-chemotherapy plus venetoclax versus R-chemotherapy alone in MYC/BCL2 double-hit and double expressing lymphomas. (Key Secondary Objective)

II. To compare the event-free survival (EFS) of R-chemotherapy plus venetoclax versus R-chemotherapy alone in MYC/BCL2 double-hit and double expressing lymphomas.

III. To assess the toxicity profile of the experimental regimens in MYC/BCL2 double-hit and double expressing lymphomas using Common Terminology Criteria for Adverse Events (CTCAE) and patient reported outcomes (PRO)-CTCAE.

IV. To compare response rates of R-chemotherapy plus venetoclax versus R-chemotherapy alone in MYC/BCL2 double-hit and double expressing lymphomas.

V. To estimate differences in response rates, EFS, PFS, and OS of R-chemotherapy plus venetoclax versus R-chemotherapy alone within each of the disease subtypes (double hit lymphoma [DHL] and double expressing lymphoma [DEL]).

VI. To determine whether cell of origin and intensity of the MYC and BCL2 protein expression correlate with PFS, EFS, and OS.

VII. To determine whether local subtyping results for DHL and DEL are consistent with central analysis.

OUTLINE: Patients are randomized to Arm 1 or Arm 2.

ARM 1 (DEL): Patients with DEL receive R-CHOP chemotherapy regimen consisting of rituximab intravenously (IV) on day 1, cyclophosphamide IV on day 1, doxorubicin hydrochloride IV on day 1, vincristine sulfate IV on day 1, and prednisone orally (PO) once daily (QD) on days 1-5. Treatment repeats every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity.

ARM 1 (DHL): Patients with DHL receive dose-adjusted (DA)-EPOCH-R chemotherapy regimen consisting of rituximab IV on day 1, doxorubicin hydrochloride IV on days 1-4, etoposide IV on days 1-4, vincristine sulfate IV on days 1-4, prednisone PO twice daily (BID) on days 1-5, and cyclophosphamide IV on day 5. Treatment repeats every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity.

ARM 2 (DEL): Patients with DEL receive R-CHOP chemotherapy regimen as in Arm 1. Patients also receive venetoclax PO QD on days 4-8 of cycle 1 and days 1-5 for cycles 2-6. Treatment repeats every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity.

ARM 2 (DHL): Patients with DHL receive DA-EPOCH-R chemotherapy regimen as in Arm 1. Patients also receive venetoclax PO QD on days 4-8 of cycle 1 and days 1-5 for cycles 2-6. Treatment repeats every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 12 weeks for 2 years, then every 24 weeks for up to 5 years, and then every 6 months for up to 10 years from registration.

Trial Phase Phase II/III

Trial Type Treatment

Lead Organization
Alliance for Clinical Trials in Oncology

Principal Investigator
Jeremy S. Abramson

• Primary ID A051701
• Secondary IDs NCI-2019-03711
• Clinicaltrials.gov ID NCT03984448