ClinicalTrials.gg
CompletedNCT03323151PrE0404Updated Jun 25, 2026Results posted

A Study of Ixazomib and Ibrutinib in Relapsed/Refractory Mantle Cell Lymphoma

A Phase 1/2 interventional study of Ixazomib and Ixazomib in Mantle-Cell Lymphoma, sponsored by PrECOG, LLC.. Completed at 14 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-25.

Sponsored by PrECOG, LLC. · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
43
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

Patients with mantle cell lymphoma (MCL) that has relapsed (come back) or refractory (progressed on treatment) will receive ixazomib and ibrutinib.

Ibrutinib has been approved by the Food and Drug Administration (FDA) as treatment for patients with mantle cell lymphoma who have received at least one prior therapy.

Ixazomib is in a class of medications called proteasome inhibitors. Cancer cells depend on proteasome to provide this protein metabolism (turnover) function to regulate their growth and survival. Ixazomib disrupts a cancer cells' ability to survive by blocking the proteasome and disrupting protein metabolism. This may help to slow down the growth of cancer or may cause cancer cells to die.

The purpose of this study is to see whether the addition of ixazomib to ibrutinib chemotherapy is effective in treating people who have relapsed or refractory MCL and to examine the side effects associated with ixazomib in combination with ibrutinib.

Read the detailed description

MCL is a rare subtype of non-Hodgkin lymphoma that is considered incurable with conventional therapy. For relapsed patients, Ibrutinib, lenalidomide, and bortezomib are all approved by the FDA but are not curative. Novel approaches are required to improve outcomes for patients with relapsed/refractory MCL.

This is an open-label study that will be done in 2 phases. Phase I will test different doses of ixazomib and ibrutinib to determine the maximum safe and tolerated dose. In Phase I, patients who have already received ibrutinib, may participate if they meet certain criteria (i.e., have not received ibrutinib for at least 3 months).

Phase II will find out the effects, good and/or bad, of ixazomib in combination with ibrutinib. In Phase II, patients will be separated into 2 groups, patients who have never received a Bruton's Tyrosine Kinase (BTK) inhibitor and patients who have received a BTK inhibitor. This study is designed to examine the effectiveness of this drug in treating patients with MCL.

Patients will be treated until progression or unacceptable toxicity.

Tumor assessments will be performed approximately every 3 months for the first year of treatment, then every 6 months until progression.

Mandatory bone marrow and tumor tissue samples (i.e., obtained during a previous procedure or biopsy) are required at baseline. Mandatory research blood samples will also be collected.

02

Conditions studied

  • Mantle-Cell Lymphoma

Keywords

  • Relapsed Mantle-Cell Lymphoma
  • Refractory Mantle-Cell Lymphoma
  • Ixazomib
  • Ibrutinib
  • Proteasome Inhibitor
  • Bruton's Tyrosine Kinase Inhibitor
03

In context

Lymphoma, Mantle-Cell

1,220 studies on the registry are indexed under Lymphoma, Mantle-Cell; 154 are open to participants now.

This study's enrollment of 43 is above the median of 37 across 1,001 interventional studies indexed under Lymphoma, Mantle-Cell.

Browse Lymphoma, Mantle-Cell studies →

Lead sponsor

PrECOG, LLC. is the lead sponsor of 19 studies on the registry; 3 are open to participants now.

Of its 11 completed or terminated interventional studies of FDA-regulated products, 11 (100%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

  • , proven mantle cell lymphoma. Must have a current or prior tissue sample that is IHC positive for cyclin D 1 or that is positive by FISH or cytogenetics for t(11;14).
  • Must have been refractory to and/or relapsed/progressed after at least 1 prior therapy.
  • Prior or allogeneic transplant are allowed. Patients may not have active grade II-IV acute (GVHD) or moderate/severe chronic GVHD by NIH criteria and may not require medications and/or for the management of acute or chronic GVHD.
  • Phase I: Prior proteasome inhibitor and/or Bruton's tyrosine kinase (BTK) inhibitors are allowed but patients may not have been exposed to the combination of proteasome inhibitor and BTK inhibitor. Patients who have progressed on ibrutinib that are felt to be at high risk for rapid progression on this study shall not be eligible for the phase I portion of the study. NOTE: Ibrutinib pre-treated patients must meet all eligibility criteria AND must have discontinued prior ibrutinib at least 3 months prior to starting study therapy. PHASE I COMPLETED NOVEMBER 25, 2019.
  • Phase II: Prior proteasome inhibitors allowed. (Please note prior to Version 3.0 of the protocol prior proteasome inhibitor and/or Bruton's tyrosine kinase inhibitors were allowed but patients could not have been exposed to the combination of proteasome inhibitor and BTK inhibitor).
  • Age ≥ 18 years.
  • Eastern Oncology Oncology Group () performance status of 0-2.
  • Ability to understand and willingness to sign Institutional Review Board (IRB)-approved .
  • Willing to provide archived tumor tissue, bone marrow (if sufficient bone marrow and tumor tissue are available) and blood samples for research.
  • Adequate organ function as measured by the following criteria

    • (ANC) ≥ 750/mm³
    • ˃50,000/mm³
    • Serum Creatinine ≤ 2x Upper Limit Normal ()
    • and AST ≤ 3x ULN
    • Total ≤ 1.5x ULN
  • Patients must not have received systemic treatment for MCL for at least 14 days prior to enrollment, except for steroids which may be used to manage acute symptoms related to disease up to 48 hours prior to starting study therapy. Radiation therapy must be concluded at least 14 days prior to enrollment.
  • Women must not be pregnant or breastfeeding since we do not know the effects of ixazomib and ibrutinib on the fetus or breastfeeding child. All sexually active females of must have a blood test to rule out pregnancy within 2 weeks prior to registration.
  • Sexually active women of child-bearing potential with a non-sterilized male partner and sexually active men must agree to use 2 methods of adequate (hormonal plus barrier or 2 barrier forms) OR abstinence prior to study entry, for the duration of study participation, and for 3 months following last dose of study drugs.
  • Patients must have resolved all prior non-hematologic toxicities assessed as related to prior therapy to ≤ grade 1.
  • Patients must have (i.e., ≥ 1.5 cm in largest diameter) by conventional imaging modalities. Patients with extranodal involvement as the only measurable site of disease must have a largest diameter ≥ 1.0 cm and must be attributable to active lymphoma in the opinion of the investigator.
  • Patients may not have current/active Central Nervous System (CNS) involvement with mantle cell lymphoma (patients with prior CNS involvement are eligible as long as they have had no evidence of active CNS disease for at least 6 months).
  • Patients may not have another that could interfere with the evaluation of safety or efficacy of this combination. Patients with a prior malignancy will be allowed without study chair approval in the following circumstances:

    • Not currently active and diagnosed at least 3 years prior to the date of enrollment.
    • Non-invasive diseases such as low risk cervical cancer or any cancer in situ
    • Localized disease in which chemotherapy would not be indicated (such as Stage I colon, lung, prostate or breast cancer). Patients with other malignancies not meeting these criteria must be discussed with PrECOG prior to enrollment.
  • Patients requiring long-term anticoagulation must be managed on an anticoagulant besides warfarin. Patients who require warfarin are not eligible.
  • Patients with a bleeding episode as judged by the investigator within 3 months of registration are not eligible, except patients who suffer bleeding due to trauma.
  • Patients may not have had major surgery within 14 days, or minor surgery within 3 days, before registration.
  • Patients may not have any active infection requiring oral or intravenous antimicrobial therapy at the time of therapy initiation. Patients with a recent self-limited infection that has clinically resolved may complete a prescribed course of antimicrobial therapy after study initiation as long as they are asymptomatic with no clinical evidence of infection for at least 7 days prior to treatment. Patients with a recent serious (grade ≥ 3) infection requiring hospitalization must have completed all antimicrobial therapy within 14 days of therapy initiation.
  • Patients may not have evidence of uncontrolled cardiovascular conditions, including uncontrolled hypertension, uncontrolled cardiac arrhythmias, symptomatic congestive heart failure ( (NYHA) class III or higher, unstable angina, or myocardial infarction within the past 6 months. Patients with a history of any significant cardiovascular disease that has been controlled for at least 14 days before registration are allowed (except for patients who have had a myocardial infarction within 6 months).
  • No systemic treatment, within 14 days before the first dose of ibrutinib with moderate or strong inhibitors of (Strong Inhibitors: ketoconazole, itraconazole, voriconazole, posaconazole, clarithromycin, and telithromycin; Moderate Inhibitors: fluconazole, darunavir, erythromycin, diltiazem, atazanavir, aprepitant, amprenavir, fosamprenavir, crizotinib, imatinib, verapamil, ciprofloxacin, grapefruit juice products, and Seville oranges) or strong CYP3A inducers for ibrutinib and ixazomib (carbamazepine, rifampin, phenytoin, St. John's wort).
  • Patients with ongoing or active systemic infection, active or C virus infection, or known (HIV) positive are not eligible. Testing is not required in absence of clinical suspicion.
  • Patients with a history of hepatitis B or C must have a negative peripheral blood Polymerase Chain Reaction (PCR) and may not be positive for Hepatitis B surface antigen. Patients with cirrhosis or other evidence of liver damage due to Hepatitis B or C are not eligible.
  • Patients with any serious medical or psychiatric illness that could, in the investigator's opinion, potentially interfere with the completion of the treatment according to the protocol are not eligible.
  • Patients with a known allergy to any of the study medications, their analogues, or in the various formulations of any agent are not eligible.
  • Patients with known gastrointestinal (GI) disease or prior GI procedure that could interfere with the oral absorption or tolerance of ixazomib or ibrutinib including difficulty swallowing are not eligible.
  • Patients with ≥ Grade 2 peripheral neuropathy, or Grade 1 peripheral neuropathy with pain on clinical examination during the screening period are not eligible.
  • Patients may not participate in any other therapeutic clinical trials, including those with other agents not included in this trial throughout the duration of this study.
  • As ibrutinib will not be provided by the study, the patient must be able to obtain ibrutinib through other means (i.e., commercially or through patient assistance programs). This must be confirmed prior to registration.
Terms in these criteria, in plain language(24)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

GVHD (graft-versus-host disease)

After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
43 participants (actual)

Study arms

  • Experimental
    Phase I: Ixazomib & Ibrutinib

    Ixazomib and Ibrutinib will be given by mouth until progression or unacceptable toxicity.

    Drug: Ixazomib · Drug: Ibrutinib

  • Experimental
    Phase II: Ixazomib & BTK-Naive

    Patients who are BTK-Naive will receive Ixazomib and Ibrutinib by mouth until progression or unacceptable toxicity.

    Drug: Ixazomib · Drug: Ibrutinib

  • Experimental
    Phase II: Ixazomib & BTK Pre-Treated (Closed 8/7/2020)

    Patients previously treated with a BTK will receive Ixazomib and Ibrutinib by mouth until progression or unacceptable toxicity.

    Drug: Ixazomib · Drug: Ibrutinib

Interventions

  • Ixazomib 3 mg by mouth on days 1, 8 and 15 by mouth days 1-28 of a 28 day cycle. Dose may be escalated (Ixazomib 4 mg) dependent on dose-limiting toxicities. Note: Ixazomib dose will not be de-escalated but remain at 3 mg.

    Also known as: Ninlaro

  • Ixazomib 4 mg by mouth on days 1, 8 and 15 of a 28 day cycle until progression or unacceptable toxicity.

    Also known as: Ninlaro

  • Ibrutinib 560 mg by mouth days 1-28 of a 28 day cycle. Dose may be de-escalated (Ibrutinib 420 mg) or escalated (Ibrutinib 560 mg) dependent on dose-limiting toxicities.

    Also known as: Imbruvica

  • Ibrutinib 560 mg by mouth days 1-28 of a 28 day cycle until progression or unacceptable toxicity.

    Also known as: Imbruvica

06

What researchers measure

Primary outcomes

  1. Phase I: Dose Limiting Toxicities (DLT) Rate

    To determine the maximum tolerable dose (MTD) of ixazomib (mg) in combination with ibrutinib (mg) in patients with relapsed/refractory mantle cell lymphoma (MCL) using DLT endpoint.

    Time frame: 1 month

  2. Phase II: Complete Response Rate

    CR rate will be the defined as the percentage of patients achieving CR as confirmed by bone marrow biopsy within the first 12 months of initiating treatment. Response to treatment was assessed using the Lugano classification criteria. Patients completed a PET/CT at the time of study enrollment and were restaged at cycles 3, 6, 9, and 12, and then every 6 months while on study therapy. All patients with suspected CR who had bone marrow involvement at screening underwent a bone marrow biopsy to confirm response.

    Time frame: 12 months

Secondary outcomes

  1. Number of Participants With Treatment-related Adverse Events as Assessed by CTCAE v5.0

    Number of patients with abnormal laboratory values and/or adverse events (defined as a new untoward medical occurrence or worsening of a pre-existing medical condition) related to study treatment. Grades refer to the severity of the adverse event, where grade 1 through 5 signifies mild, moderate, severe, life-threatening, and death respectively.

    Time frame: Phase I: 12 months; Phase II: 36 months

  2. Overall Response Rate (ORR)

    ORR assessed in accordance with Lugano classification

    Time frame: Phase I: 12 months; Phase II: 12 months

  3. Progression-Free Survival (PFS)

    PFS assessed in accordance with Lugano classification

    Time frame: Phase I & II: 48 months

  4. Overall Survival (OS)

    OS assessed during clinic visit or by reaching out to patients to confirm vital status.

    Time frame: Phase I & II: 48 months

07

Results

Posted Jan 8, 2024

Participant flow

Participant flow — Overall Study
MilestonePhase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-Naive
Started39427
Completed39427
Not completed0000

Outcome measures

PrimaryPhase I: Dose Limiting Toxicities (DLT) Rate

To determine the maximum tolerable dose (MTD) of ixazomib (mg) in combination with ibrutinib (mg) in patients with relapsed/refractory mantle cell lymphoma (MCL) using DLT endpoint.

Time frame:
1 month
Reported as:
Count of participants · Participants
Phase I: Dose Limiting Toxicities (DLT) Rate
ParticipantsPhase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)
Dose Limiting Toxicity = No35
Dose Limiting Toxicity = Yes01
Unevaluable for Dose Limiting Toxicity03
PrimaryPhase II: Complete Response Rate

CR rate will be the defined as the percentage of patients achieving CR as confirmed by bone marrow biopsy within the first 12 months of initiating treatment. Response to treatment was assessed using the Lugano classification criteria. Patients completed a PET/CT at the time of study enrollment and were restaged at cycles 3, 6, 9, and 12, and then every 6 months while on study therapy. All patients with suspected CR who had bone marrow involvement at screening underwent a bone marrow biopsy to confirm response.

Time frame:
12 months
Reported as:
Count of participants · Participants
Phase II: Complete Response Rate
ParticipantsPhase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-Naive
Complete Response011
Partial Response210
Stable Disease10
Progressive Disease16
Unevaluable00
SecondaryNumber of Participants With Treatment-related Adverse Events as Assessed by CTCAE v5.0

Number of patients with abnormal laboratory values and/or adverse events (defined as a new untoward medical occurrence or worsening of a pre-existing medical condition) related to study treatment. Grades refer to the severity of the adverse event, where grade 1 through 5 signifies mild, moderate, severe, life-threatening, and death respectively.

Time frame:
Phase I: 12 months; Phase II: 36 months
Reported as:
Count of participants · Participants
Number of Participants With Treatment-related Adverse Events as Assessed by CTCAE v5.0
ParticipantsPhase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-Naive
Grade 10001
Grade 20116
Grade 337318
Grade 40101
Grade 50001
SecondaryOverall Response Rate (ORR)

ORR assessed in accordance with Lugano classification

Time frame:
Phase I: 12 months; Phase II: 12 months
Reported as:
Count of participants · Participants
Overall Response Rate (ORR)
ParticipantsPhase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-Naive
Complete (CR) or Partial Response (PR)26221
Non-CR/-PR1326
SecondaryProgression-Free Survival (PFS)

PFS assessed in accordance with Lugano classification

Time frame:
Phase I & II: 48 months
Reported as:
Median · Months
Progression-Free Survival (PFS)
MonthsPhase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-Naive
Progression-Free Survival (PFS)17.12 (2.56 to 36.44)27.43 (5.78 to 29.17)14.16 (2.14 to 14.16)29.83 (8.28 to 35.12)
SecondaryOverall Survival (OS)

OS assessed during clinic visit or by reaching out to patients to confirm vital status.

Time frame:
Phase I & II: 48 months
Reported as:
Median · Months
Overall Survival (OS)
MonthsPhase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-Naive
Overall Survival (OS)27.01 (20.01 to 51.15)47.74 (25.17 to 47.74)29.17 (14.16 to 37.06)35.68 (29.83 to 35.68)

Adverse events

Collected over Adverse event data was collected after each treatment cycle and for 30 days beyond treatment for up to 60 months.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Phase I: Ixazomib & Ibrutinib (Dose Level 1)3/3 (100%)2/3 (66.7%)3/3 (100%)
Phase I: Ixazomib & Ibrutinib (Dose Level 2)4/9 (44.4%)7/9 (77.8%)9/9 (100%)
Phase II: Ixazomib & BTK Pre-Treated1/4 (25%)1/4 (25%)4/4 (100%)
Phase II: Ixazomib & BTK-Naive5/27 (18.5%)10/27 (37%)27/27 (100%)
Most frequent serious events
Showing 10 of 26
Most frequent serious events
EventPhase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-Naive
Atrial fibrillationCardiac disorders1/31/90/42/27
Lung infectionInfections and infestations1/31/90/40/27
Acute myeloid leukaemiaNeoplasms benign, malignant and unspecified (incl cysts and polyps)1/30/90/40/27
PyrexiaGeneral disorders1/30/90/40/27
Haemolytic anaemiaBlood and lymphatic system disorders0/30/91/40/27
Acute kidney injuryRenal and urinary disorders0/31/90/40/27
Hepatic failureHepatobiliary disorders0/31/90/40/27
Herpes zosterInfections and infestations0/31/90/40/27
Pneumonia fungalInfections and infestations0/31/90/40/27
DyspnoeaRespiratory, thoracic and mediastinal disorders0/31/90/40/27
Most frequent other events
Showing 10 of 40
Most frequent other events
EventPhase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-Naive
FatigueGeneral disorders1/34/93/416/27
ContusionInjury, poisoning and procedural complications2/33/90/47/27
DiarrhoeaGastrointestinal disorders0/34/92/415/27
NauseaGastrointestinal disorders0/33/91/415/27
Platelet Count DecreasedInvestigations1/32/92/410/27
RashSkin and subcutaneous tissue disorders1/34/91/46/27
Upper Respiratory Tract InfectionInfections and infestations1/34/90/42/27
ArthralgiaMusculoskeletal and connective tissue disorders1/31/90/49/27
DizzinessNervous system disorders1/32/90/45/27
HeadacheNervous system disorders1/30/90/47/27

Baseline characteristics

Patients with mantle cell lymphoma (MCL) that has relapsed (come back) or refractory (progressed on treatment) will receive ixazomib and ibrutinib. Ibrutinib has been approved by the Food and Drug Administration (FDA) as treatment for patients with mantle cell lymphoma who have received at least one prior therapy. Ixazomib is in a class of medications called proteasome inhibitors. It may help to slow down the growth of cancer or may cause cancer cells to die.

Age, Categorical
Age, Categorical(Participants)Phase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-NaiveTotal
<=18 years00000
Between 18 and 65 years11169
>=65 years2832134
Age, Continuous
Age, Continuous(years)Phase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-NaiveTotal
Median67 (52 to 73)73 (63 to 84)74 (58 to 77)70 (53 to 80)70 (52 to 84)
Sex: Female, Male
Sex: Female, Male(Participants)Phase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-NaiveTotal
Female120811
Male2741932
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Phase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-NaiveTotal
Hispanic or Latino00000
Not Hispanic or Latino3942743
Unknown or Not Reported00000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Phase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-NaiveTotal
American Indian or Alaska Native00000
Asian00022
Native Hawaiian or Other Pacific Islander00000
Black or African American01001
White3742539
More than one race01001
Unknown or Not Reported00000
Region of Enrollment
Region of Enrollment(participants)Phase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-NaiveTotal
United States3942743
Ann Arbor Stage
Ann Arbor Stage(Participants)Phase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-NaiveTotal
Stage IE00011
Stage II02024
Stage III11013
Stage IV2642335
ECOG Performance Status
ECOG Performance Status(Participants)Phase I: Ixazomib & Ibrutinib (Dose Level 1)Phase I: Ixazomib & Ibrutinib (Dose Level 2)Phase II: Ixazomib & BTK Pre-TreatedPhase II: Ixazomib & BTK-NaiveTotal
01431927
1241815
201001

2 further baseline measures are reported on the registry.

08

Study locations

14 sites
  • Winship Cancer Institute of Emory University
    Atlanta, Georgia 30322, United States
  • Georgia Cancer Center at Augusta University
    Augusta, Georgia 30912, United States
  • Carle Cancer Center
    Urbana, Illinois 61801, United States
  • University of Kansas
    Overland Park, Kansas 66210, United States
  • Washington University School of Medicine
    St Louis, Missouri 63110, United States
  • Rutgers Cancer Institute of New Jersey
    New Brunswick, New Jersey 08903, United States
  • Laura and Isaac Perlmutter Cancer Center at NYU
    New York, New York 10016, United States
  • University of Pennsylvania Abramson Cancer Center
    Philadelphia, Pennsylvania 19104, United States
  • University of Virginia
    Charlottesville, Virginia 22908, United States
  • West Virginia University
    Morgantown, West Virginia 26506, United States
  • Gundersen Health System
    La Crosse, Wisconsin 54601, United States
  • University of Wisconsin
    Madison, Wisconsin 53792, United States
  • Medical College of Wisconsin
    Milwaukee, Wisconsin 53226, United States
  • ProHealth Care
    Waukesha, Wisconsin 53188, United States
09

References and documents

Publications

  • Cohen JB, Portell CA, Hamadani M, Jegede O, Diefenbach C, Fletcher C, Matasar M, Landsburg D, Mantha S, Kahl B. An Evaluation of Ibrutinib and Ixazomib in Patients With Relapsed/Refractory Mantle Cell Lymphoma: PrE0404. Clin Lymphoma Myeloma Leuk. 2026 Jul;26(7):465-473.e1. doi: 10.1016/j.clml.2026.04.025. Epub 2026 May 4. PubMed 42209393 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No — Data is proprietary.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Aug 2018 to primary completion in Sep 2022, 49 months.

Results were first posted in Jan 2024, 1 year 3 months after primary completion.

Of 51 non-industry phase 1/2 interventional studies under Lymphoma, Mantle-Cell, half reached primary completion within 78 months of starting (the median), counting those still running; a quarter within 49 and three quarters within 122. This study's 49 months is below that.

Counting every sponsor, half of 77 studies reached it within 75 months; a quarter within 45 and three quarters within 114.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 16, 2017
First posted
Oct 26, 2017
StartActual
Aug 13, 2018
Primary completionActual
Sep 22, 2022
CompletionActual
Sep 7, 2023
Results first posted
Jan 8, 2024
Last update
Jun 25, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 25, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03323151
Lead sponsor
PrECOG, LLC.
Collaborators
Takeda
Responsible party
Sponsor
First posted
Oct 26, 2017
Start date
Aug 13, 2018
Primary completion
Sep 22, 2022
Completion
Sep 7, 2023
Results posted
Jan 8, 2024
Last update
Jun 25, 2026

Study contacts

Jonathon B Cohen, MD
study chair · Emory University - Winship Cancer Institute

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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Studies of the drugs tested here: Ixazomib · Ibrutinib

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