A Study to Evaluate Acalabrutinib With or Without Obinutuzumab to Treat Early-Stage Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma Patients

Overview

About this study

This phase II trials studies how well acalabrutinib with or without obinutuzumab works in treating participants with early-stage chronic lymphocytic leukemia or small lymphocytic lymphoma. Acalabrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Monoclonal antibodies, such as obinutuzumab, may interfere with the ability of cancer cells to grow and spread. It is not yet known whether giving acalabrutinib with or without obinutuzumab will work better in treating participants with early-stage chronic lymphocytic leukemia or small lymphocytic lymphoma.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

- Diagnosis of:

- Biopsy-proven small lymphocytic lymphoma (SLL) , or

- Diagnosis of chronic lymphocytic leukemia (CLL) with a clonal B-cell population
in the peripheral blood with immunophenotyping consistent with CLL as follows:

- The population of lymphocytes share both B-cell antigens (CD19, CD20
[typically dim expression], or CD23) as well as CD5 in the absence of other
pan-T-cell markers (CD3, CD2, etc.)

- Clonality as evidenced by kappa or lambda light chain expression (typically
dim immunoglobulin expression) or other genetic method (e.g. IGHV analysis)

- Before diagnosing CLL or SLL, mantle cell lymphoma must be excluded by
demonstrating a negative fluorescence in situ hybridization (FISH) analysis
for t(11;14)(IgH/CCND1)

- Patients must be previously untreated

- Note: Prior chemotherapy or monoclonal antibody based therapy for treatment of
CLL or SLL will be considered prior therapy; nutraceutical treatments with no
established benefit in CLL (such as epigallocatechin gallate or EGCG, found in
green tea or other herbal treatments or supplemental vitamins) will not be
considered "prior treatment"; prior corticosteroid therapy for an indication
other than CLL/SLL will not be considered "prior treatment"

- All patients will undergo testing for prognostic factors according to the CLL-IPI
(testing obtained =< 730 days prior to registration)

- Note: If the results for any of the prognostic factors included in the CLL-IPI
are unknown including IGVH mutation status results not being available due to a
failed laboratory assay, the patient is not eligible

- Note: When determining CLL-IPI, use most recent test results, if more than one
result is available

- Note: Patients with CLL-IPI risk category of high risk or very high risk (total
score of 4-10) will be randomized to Arms A or B

- Note: Patients with CLL-IPI risk category of low risk or intermediate risk (total
score of 0-3) will be registered to Arm C

- Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0, 1, or 2

- Provide written informed consent

- Willing to provide blood and saliva samples for correlative research purposes

- Willing to return to enrolling institution for follow-up (during the active monitoring
phase of the study)

- For high risk and very high risk CLL-IPI (Arms A and B) only: Absolute neutrophil
count (ANC) >= 1500/mm^3 (obtained =< 30 days prior to randomization)

- For high risk and very high risk CLL-IPI (Arms A and B) only: Platelet count >=
100,000/mm^3 (obtained =< 30 days prior to randomization)

- For high risk and very high risk CLL-IPI (Arms A and B) only: Hemoglobin >= 11.0 g/dL
(obtained =< 30 days prior to randomization)

- For high risk and very high risk CLL-IPI (Arms A and B) only: Aspartate
aminotransferase (aspartate transaminase [AST]) =< 3 x upper limit of normal (ULN)
(obtained =< 30 days prior to randomization)

- For high risk and very high risk CLL-IPI (Arms A and B) only: Creatinine =< 1.5 X ULN
(obtained =< 30 days prior to randomization)

- For high risk and very high risk CLL-IPI (Arms A and B) only: Total bilirubin =< 1.5 x
upper limit of normal (ULN) (or total bilirubin =< 3.0 x ULN with direct bilirubin =<
1.5 x ULN in patients with well-documented Gilbert's syndrome (obtained =< 30 days
prior to randomization)

- For high risk and very high risk CLL-IPI (Arms A and B) only: Prothrombin time (PT),
international normalized ratio (INR), and partial thromboplastin time (PTT) =< 1.5 X
ULN OR if patient is receiving anticoagulant therapy and PT or PTT is within
therapeutic range of intended use of coagulants (obtained =< 30 days prior to
randomization)

- Negative serum pregnancy test done =< 7 days prior to registration, for persons of
childbearing potential only

- Will provide bone marrow aspirate sample for correlative research purposes

Exclusion Criteria:

- Date of CLL/SLL diagnosis >= 24 months prior to registration

- Prior exposure to ibrutinib or to a BCR inhibitor (e.g. Btk or PI3 kinase or Syk
inhibitors) or a BCL-2 inhibitor (e.g. venetoclax)

- Known central nervous system (CNS) lymphoma or leukemia

- Patients with any of the following indications for chemotherapy:

- Evidence of progressive marrow failure as manifested by the development of or
worsening anemia (=< 11 g/dL) and/or thrombocytopenia (=< 100 x 10^9/L) not due
to autoimmune disease

- Symptomatic or progressive lymphadenopathy, splenomegaly or hepatomegaly

- One or more of the following disease-related symptoms:

- Weight loss >= 10% within the previous 6 months

- Extreme fatigue attributed to CLL

- Fevers >= 100.4 degrees Fahrenheit (F) for 2 weeks without evidence of
infection

- Drenching night sweats without evidence of infection

- Co-morbid systemic illnesses or other severe concurrent disease which, in the judgment
of the investigator, would make the patient inappropriate for entry into this study or
interfere significantly with the proper assessment of safety and toxicity of the
prescribed regimens

- Patients known to be human immunodeficiency virus (HIV) positive and currently
receiving antiretroviral therapy; NOTE: Patients known to be HIV positive, but without
clinical evidence of an immunocompromised state, are eligible for this trial

- Uncontrolled intercurrent illness including, but not limited to, ongoing or active
infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac
arrhythmia, or psychiatric illness/social situations that would limit compliance with
study requirements

- Receiving any other investigational agent which would be considered as a treatment for
the primary neoplasm

- Other active malignancy =< 2 years prior to registration; EXCEPTIONS: Non-melanotic
skin cancer, carcinoma-in-situ of the cervix, or early stage prostate cancer

- History of myocardial infarction =< 6 months prior to registration, or congestive
heart failure requiring use of ongoing maintenance therapy for life-threatening
ventricular arrhythmias

- For high risk and very high risk CLL-IPI (Arms A and B) only:

- Any of the following:

- Pregnant persons

- Nursing persons

- Persons of childbearing potential who are unwilling to employ highly
effective contraception

- Serologic status reflecting active hepatitis B or C infection

- NOTE: Subjects with hepatitis B core antibody positive who are surface
antigen negative or who are hepatitis C antibody positive will need to have
a negative polymerase chain reaction (PCR) result before randomization;
those who are hepatitis B surface antigen positive or hepatitis B PCR
positive and those who are hepatitis C PCR positive will be excluded

- History of stroke or intracranial hemorrhage within 6 months before randomization

- History of bleeding diathesis (e.g. hemophilia, von Willebrand disease)

- Requires or receiving anticoagulation with warfarin or equivalent vitamin K
antagonists (e.g. phenprocoumon) within 7 days of first dose of study drug and
while on study

- Requires treatment with a strong CYP3A inducer

- Requires treatment with proton-pump inhibitors (e.g. omeprazole, esomeprazole,
lansoprazole, dexlansoprazole, rabeprazole, or pantoprazole)

- Presence of a gastrointestinal ulcer diagnosed by endoscopy within 3 months
before screening

- History of confirmed progressive multifocal leukoencephalopathy (PML)

- Received a vaccination with a live vaccine =< 28 days prior to randomization

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

Eligibility last updated 4/26/23. Questions regarding updates should be directed to the study team contact.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Sameer Parikh, M.B.B.S.

Open for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office

(855) 776-0015

Jacksonville, Fla.

Mayo Clinic principal investigator

Ricardo Parrondo, M.D.

Open for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office

(855) 776-0015

Scottsdale/Phoenix, Ariz.

Mayo Clinic principal investigator

Jose Leis, M.D., Ph.D.

Open for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office

(855) 776-0015

More information

Publications

Publications are currently not available

Additional contact information

Cancer-related trials contact form

Phone: 855-776-0015 (toll-free)

International patient clinical studies questions