NCT07772024 · CellCentric Ltd.
Inobrodib, Pomalidomide and Dexamethasone Versus Standard Available Therapy in Relapsed or Refractory Multiple Myeloma
(DOMMINO-2)
What this study is about
The main purpose of this study is to find out whether inobrodib, when given with pomalidomide and dexamethasone, works better than standard treatment for people whose multiple myeloma has come back or has not improved after previous treatment.
View original scientific description
The main purpose of this study is to find out whether inobrodib, when given with pomalidomide and dexamethasone, works better than standard treatment for people whose multiple myeloma has come back or has not improved after previous treatment. The study will look at how long people taking part in the study ("Participants") live without their myeloma getting worse, and how many people's myeloma improves (responds) following treatment. The study will also look at how long participants live overall, how quickly treatment works, how long the response lasts, whether very small amounts of myeloma can still be found after a good response, quality of life, side effects, and the amount of inobrodib in the blood. Participants receive treatment in 28-day cycles. One group receives inobrodib by mouth twice a day for 4 days, followed by 3 days without inobrodib each week; pomalidomide by mouth once a day on Days 1 to 21 of each cycle; and dexamethasone once each week. The other group receives 1 standard treatment chosen by the study doctor from the following treatment options: daratumumab, pomalidomide, and dexamethasone; elotuzumab, pomalidomide, and dexamethasone; or carfilzomib and dexamethasone. Some standard treatments are given by injection or infusion at the study site. Other medicines, such as tablets or capsules, may be taken by mouth as instructed by the study team. Study checks include questions about symptoms and side effects, review of other medicines, physical checks, blood pressure and other vital sign checks, heart tracing tests, blood and urine tests, scans where needed, bone marrow samples, and questionnaires about symptoms and daily life. Participants in the inobrodib group will have extra blood samples to measure the amount of inobrodib in the blood. Some participants may also have extra research blood samples at selected visits.
Interventions
DRUG
InoPd
Inobrodib in combination with pomalidomide and dexamethasone. Inobrodib 20 mg orally (PO) twice daily (b.i.d.), 4 days on/3 days off. Pomalidomide 4 mg PO once daily (o.d.) on Days 1 to 21 of each 28-day cycle. Dexamethasone 40 mg PO every week (q1w) (20 mg if \>75 years old) on Days 1, 8, 15 and 22 of each 28-day cycle. Treatment will continue until progressive disease, death, unacceptable side effects, withdrawal of consent or end of study, whichever occurs first.
DRUG
Investigator's choice of SAT
Investigator's choice of elotuzumab in combination with pomalidomide and dexamethasone (EPd), daratumumab in combination with pomalidomide and dexamethasone (DPd), or carfilzomib in combination with dexamethasone (Kd). Treatment will continue until progressive disease, death, unacceptable side effects, withdrawal of consent or end of study, whichever occurs first.
Primary outcome measures
Progression-free Survival (PFS) assessed by Blinded Independent Central Review (BICR)
Time frame: From randomization until progressive disease or death, assessed every 28 days and followed until the final PFS analysis after approximately 330 PFS events; estimated up to approximately 38 months after the start of enrollment
Defined as the time from randomization until the earliest date of PD based on International Myeloma Working Group (IMWG) criteria assessed by BICR, or death due to any cause
Objective Response Rate (ORR) assessed by BICR
Time frame: From randomization until confirmed progressive disease, initiation of subsequent anticancer therapy, death, withdrawal, or the ORR data cutoff, whichever occurs first; disease response assessed every 28 days (up to 48 months)
Defined as the percentage of participants with a confirmed PR or better, based on IMWG criteria assessed by BICR
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Adults aged 18 years or older (or the minimum age of consent under local rules, if that is 18 or over)
- A diagnosis of multiple myeloma that has either come back (relapsed) or did not respond (refractory) after the most recent treatment
- Myeloma that can be measured using standard study tests (blood and/or urine tests)
- Between 1 and 4 previous courses (lines) of myeloma treatment, which must have included both a treatment that targets CD38 (such as daratumumab or isatuximab) and lenalidomide
- Well enough to carry out daily activities with little or no help (Eastern Cooperative Oncology Group \[ECOG\] performance status of 0 to 2)
- Suitable blood test results and adequate kidney and liver function
- Willingness to use highly effective contraceptive measures (if sexually active) with all sexual partners
Exclusion criteria
- Recent anticancer treatment before starting study treatment: any experimental medicine, chemotherapy, immunotherapy or other anticancer treatment within 14 days or 5 half-lives (whichever is shorter), or certain antibody-based treatments within longer set periods
- Previous treatment with a medicine that works in the same way as inobrodib (a p300/CBP bromodomain inhibitor)
- Myeloma that has already stopped responding to pomalidomide (pomalidomide-refractory), unless only short-term pomalidomide was used and the study doctor confirms the person still meets the study rules
- Unable to receive at least one of the standard treatment options offered in the study, or unable/unwilling to follow the requirements for at least one of those options
- Taking medicines, herbal supplements or foods (for example, strong CYP3A4 inducers or inhibitors) that would interfere with the study treatment
- Major surgery within 4 weeks before the first dose of study treatment
- A live vaccine within 4 weeks before study treatment
- A recent stem cell transplant, or ongoing transplant-related problems such as graft-versus-host disease
- Myeloma affecting the brain, spinal fluid or spinal cord, or ongoing pressure on the spinal cord
- Another active cancer (progressing or needing a change in treatment) in the last 24 months, other than multiple myeloma, apart from certain low-risk or fully treated cancers
- Serious or uncontrolled medical problems, such as uncontrolled heart, lung, liver, bleeding or diabetes conditions, uncontrolled high blood pressure, or a heart-rhythm problem (including QT prolongation)
- An active or uncontrolled infection, including certain cases of HIV, hepatitis B or hepatitis C
- Digestive problems that could stop the study medicines being swallowed or properly absorbed
- Pregnant or breastfeeding, or planning to become pregnant, father a child or donate sperm during treatment or the required post-treatment period
- Any illness or medical history that could affect safety, the ability to follow study requirements, or the interpretation of study results
Where
- Miami, Florida
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Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Aug 19, 2026 · Source of record for eligibility and locations