Pirtobrutinib and Venetoclax for Relapsed-Refractory Mantle Cell Lymphoma
This study is testing if a combination of two oral medications, pirtobrutinib and venetoclax, can help people with mantle cell lymphoma (MCL) that has come back (relapsed) or hasn't responded to previous treatments (refractory). Researchers want to see how well this combination works and if it is safe. You may be able to join if you are 18 or older, can take oral medications, and have a confirmed diagnosis of MCL. The study will measure how many patients respond to the treatment (overall response rate) over about one year. The current recruitment status is unclear, and the study plans to enroll 30 participants.
- Study design
- This is an interventional study, meaning participants will receive a specific treatment. It plans to enroll 30 participants.
- What's involved
- Participants will take pirtobrutinib and venetoclax by mouth. The study will measure response rates over an average of one year.
- Compensation
- Not stated in the trial record.
- Follow-up
- The primary endpoint, overall response rate, is measured through study completion, an average of 1 year.
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NCT05529069
Phase II Study of Pirtobrutinib With Venetoclax In Relapsed-Refractory MCL (Mantle Cell Lymphoma) Patients
Recruiting
PHASE2Ages 18+InterventionalTreatmentM.D. Anderson Cancer CenterInvestigator-initiated
~30 participants
Updated 2026-05-05 on ClinicalTrials.gov
What's tested:PirtobrutinibVenetoclax
At a glance
Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
ORR (overall response rate)
Measured over through study completion an average of 1 year.
Conditions
Where it's being run
1 sites across 1 statesTexas1
Study leadership
- Preetesh Jain, MD, DM, PhD · PRINCIPAL_INVESTIGATOR · M.D. Anderson Cancer Center
Who to contact
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Do you actually qualify for this trial?
Add a private profile and we'll compare every criterion below against your situation — and tell you which ones are met, uncertain, or excluding.
Eligibility criteria
Inclusion
Hormonal contraception (birth control pills, patches, or rings)
Intrauterine device (IUD)
Birth control injections
Double barrier methods (diaphragm with spermicidal gel or condoms with birth control foam)
Sterilization of participant or partner ("tubes tied" or vasectomy) Willingness of men and women of reproductive potential (defined as following menarche and not postmenopausal \[and 2 years of non-therapy-induced amenorrhea\] or surgically sterile) to observe conventional and highly effective birth control methods with failure rates of \< 1% for the duration of treatment and for 6 months following the last dose of study treatment; this must include barrier methods such as condom or diaphragm with spermicidal gel. Women of reproductive potential are defined as following menarche and not postmenopausal (and 2 years of non-therapy-induced amenorrhea) or surgically sterile. For male subjects with a non-pregnant female partner of child-bearing potential and a woman of child-bearing potential one of the following highly effective birth control methods with a failure rate of less than 1% per year when used consistently and correctly are recommended: Combined estrogen and progestin containing hormonal contraception associated with inhibition of ovulation given orally, intravaginally, or trans dermally, progestin-only hormonal contraception associated with inhibition of ovulation given orally, by injection, or by implant, Intrauterine device (IUD) , Intrauterine hormone-releasing system (IUS), Bilateral tubal occlusion, Vasectomized partner, Sexual abstinence: considered a highly effective method only if defined as refraining from heterosexual intercourse during an entire period of risk associated with the study treatment. The reliability of sexual abstinence will be evaluated in relation to the duration of the study and to the usual lifestyle of the subject (CTFG 2014).
Targeted agents, investigational agents, therapeutic monoclonal antibodies or cytotoxic chemotherapy: 5 half-lives or 2 weeks, whichever is shorter
Immunoconjugates antibody treatment within 10 weeks prior to enrollment.
Broad field radiation (≥ 30% of the bone marrow or whole brain radiotherapy) must be completed 28 days prior to study enrollment
Palliative limited field radiation must be completed 7 days prior to study enrollment. Note: In the case of known central nervous system (CNS) involvement by systemic lymphoma: Patients with previous treatment for CNS involvement who are neurologically stable and without evidence of disease may be eligible if a compelling clinical rationale is provided by the Investigator and with documented IND sponsor's approval. 17. Prior treatment-related AEs must have recovered to Grade ≤ 1 with the exception of alopecia and Grade 2 peripheral neuropathy.
Exclusion
CD4+ T-cell counts ≥350 cells/μL;
Participants with a history of acquired immunodeficiency syndrome (AIDS)-defining opportunistic infections may be eligible, if they have not had an opportunistic infection within the past 12 months;
If participant is on antiretroviral, evaluation of the specific agents must be performed in order to determine if participant is eligible (e.g., excluding patients taking strong CYP3A inhibitors such as ritonavir). If necessary, evaluate the feasibility of switching to an alternate effective ARV therapy (ART) regimen before study participation. Participants need to be on established ART for at least 4 weeks and have an HIV viral load less than 400 copies/mL prior to enrollment.
Screening for HIV infection is not required 9. Known active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection based on criteria below: Hepatitis B virus (HBV): Patients with positive hepatitis B surface antigen (HBsAg) are excluded. Patients with positive hepatitis B core antibody (anti-HBc) and negative HBsAg require hepatitis B polymerase chain reaction (PCR) evaluation before enrollment. Patients who are hepatitis B PCR positive will be excluded. Hepatitis C virus (HCV): positive hepatitis C antibody. If positive hepatitis C antibody result, patient will need to have a negative result for hepatitis C ribonucleic acid (RNA) before enrollment. Patients who are hepatitis C RNA positive will be excluded. 10. Evidence of other clinically significant uncontrolled condition(s) including but not limited to, uncontrolled systemic bacterial, viral, fungal or parasitic infection (except for fungal nail infection), or other clinically significant active disease process which in the opinion of the investigator and IND sponsor may pose a risk for patient participation. Screening for chronic conditions is not required. 11. Pregnancy, lactation or plan to breastfeed during the study or within 6 months of the last dose of study treatment 12. Significant cardiovascular disease defined as:
unstable angina or acute coronary syndrome within the past 2 months prior to enrollment
history of myocardial infarction within 3 months prior to enrollment or
documented LVEF by any method of ≤ 40% in the 12 months prior to enrollment
≥ Grade 3 NYHA functional classification system of heart failure, uncontrolled or symptomatic arrhythmias 13. Prolongation of the QT interval corrected for heart rate (QTcF) \> 470 msec on at least 2/3 consecutive electrocardiograms (ECGs), and mean QTcF \> 470 msec on ECG, during Screening. QTcF is calculated using Fridericia's Formula (QTcF): QTcF = QT/(RR0.33).
Correction of suspected drug induced QTcF prolongation can be attempted at the investigator's discretion and only if clinically safe to do so with either discontinuation of the offending drug or switch to another drug not known to be associated with QTcF prolongation.
Correction for underlying bundle branch block (BBB) allowed. Note: Patients with pacemakers are eligible if they have no history of fainting or clinically relevant arrhythmias while using the pacemaker. 14. Concomitant malignancies or previous malignancies with less than a 1-year disease-free interval at the time of signing consent. Subjects with adequately treated basal or squamous cell carcinoma of the skin, or adequately treated carcinoma in situ (e.g. cervix) may enroll irrespective of the time of diagnosis. Patients with controlled, advanced prostate cancer (not on active chemotherapy) are permitted. Active second malignancy unless in remission with life expectancy \> 2 years. Examples include:
a. Adequately treated no melanomatous skin cancer or lentigo maligna melanoma without current evidence of disease.
b. Adequately treated cervical carcinoma in situ without current evidence of disease.
c. Localized (e.g., lymph node negative) breast cancer treated with curative intent with no evidence of active disease present for more than 3 years and receiving adjuvant hormonal therapy.
d. Localized prostate cancer undergoing active surveillance. 15. Malabsorption syndrome, disease significantly affecting gastrointestinal function, or resection of the stomach or small bowel or ulcerative colitis, symptomatic inflammatory bowel disease, or partial or complete bowel obstruction. Clinically significant active malabsorption syndrome or other condition likely to affect gastrointestinal (GI) absorption of venetoclax. 16. With known allergies to xanthine oxidase inhibitors and/or rasburicase. 17. Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that, in the opinion of the investigator, may increase the risk associated with study participation or study treatment administration or may interfere with the interpretation of study results and/or would make the patient inappropriate for enrollment into this study. 18. No concomitant anticancer therapies, immunotherapies, cellular, or radiotherapy. No major surgery within 4 weeks prior to first dose of study treatment. Washout period for chemotherapy is 14 days. Washout period for targeted agents is 2 weeks or 5 half-lives (t1/2) (whichever is shorter). Washout period for antibody-based immunotherapies or cellular therapies is 4 weeks. Washout period for radiotherapy is 7 days (limited field) and 28 days (extended field that includes BM). Washout period must be completed prior to any treatment administration. 19. Uncontrolled autoimmune hemolytic anemia (AIHA) or immune thrombocytopenia. Active uncontrolled auto-immune cytopenia (e.g., autoimmune hemolytic anemia \[AIHA\], idiopathic thrombocytopenic purpura \[ITP\]) is for which new therapy was introduced or existing therapy was escalated within the 4 weeks prior to study enrollment to maintain adequate blood counts. 20. Concomitant steroids for disease related pain control are allowed at any dose but must be discontinued prior to any study treatment initiation. Chronic use of corticosteroids is allowed up to 20 mg prednisone or equivalent daily for non-cancer related conditions at the time of study start. 21. History of allogeneic or autologous stem cell transplant (SCT) or chimeric antigen receptor-modified T cell (CAR-T) therapy within 60 days of enrollment or presence of any of the following, regardless of prior SCT and/or CAR-T therapy timing: • active graft versus host disease (GVHD); • cytopenia from incomplete blood cell count recovery post-transplant; • need for anti-cytokine therapy for toxicity from CAR-T therapy; residual symptoms of neurotoxicity \> Grade 1 from CAR-T therapy; • ongoing immunosuppressive therapy (\> 20 mg prednisone or equivalent daily). 22. Known neurologic disorder or residual neurologic toxicities that may put patients at increased risk of neurologic toxicity in the opinion of the investigator. 23. Active uncontrolled systemic infection. 24. Received an investigational agent within 2 weeks or within 5 T1/2, whichever is shorter prior to the first dose of study treatment. 25. Current treatment with certain strong cytochrome P450 3A4 (CYP3A4) inhibitors or inducers and/or strong P-gp inhibitors. Because of their effect on CYP3A4, use of any of the following within 3 days of study therapy start or planned use during study participation is prohibited, • grapefruit or grapefruit products
Seville oranges or products from Seville oranges
star fruit 26. Patients taking warfarin and/or equivalent vitamin K antagonists are excluded since the use of these agents is contraindicated with Pirtobrutinib or with venetoclax.
What this trial measures
- ORR (overall response rate)through study completion an average of 1 year.