Iberdomide + Daratumumab vs. Bortezomib for Multiple Myeloma

(EXCALIBER-RRMM Trial)

Recruiting at 584 trial locations

Overseen By BMS Clinical Trials Contact Center www.BMSClinicalTrials.com

Age: 18+

Sex: Any

Trial Phase: Phase 3

Sponsor: Celgene

Disqualifiers: Plasma cell leukemia, Waldenstrom's, POEMS, others

No Placebo Group All trial participants will receive the active study treatment (no placebo)

Pivotal Trial (Near Approval) This treatment is in the last trial phase before FDA approval

Prior Safety Data This treatment has passed at least one previous human trial

Compensation: Varies

Number of Visits: Unknown

Duration: Up to approximately 5 years

864 Participants Needed

Trial Summary

What is the purpose of this trial?

This is a multicenter, two-stage, randomized, controlled, open-label, Phase 3 study comparing the efficacy and safety of iberdomide in combination with dexamethasone and daratumumab (IberDd) versus daratumumab, bortezomib, and dexamethasone (DVd) in participants with relapsed or refractory multiple myeloma (RRMM).

Will I have to stop taking my current medications?

The trial information does not specify whether you need to stop taking your current medications. It's best to discuss this with the trial coordinators or your doctor.

Is the combination of Iberdomide, Daratumumab, and Bortezomib safe for treating multiple myeloma?

The combination of Daratumumab, Bortezomib, and Dexamethasone has been shown to be generally safe and tolerable in patients with relapsed or refractory multiple myeloma, with a consistent safety profile over time. ^{1 2 3 4 5}

What makes the drug combination of Iberdomide, Daratumumab, Bortezomib, and Dexamethasone unique for treating multiple myeloma?

This drug combination is unique because it includes Iberdomide, a novel agent that enhances the immune system and works well with other drugs like dexamethasone and daratumumab, potentially offering better outcomes for patients with relapsed or hard-to-treat multiple myeloma. ^{1 2 6 7 8}

Research Team

Bristol-Myers Squibb

Principal Investigator

Bristol-Myers Squibb

Eligibility Criteria

This trial is for people with multiple myeloma who've had 1-2 previous treatments but their cancer has gotten worse. They should be fairly active and able to do light work (ECOG score of 0, 1, or 2). It's not for those with certain other blood disorders, brain involvement by myeloma, or anyone previously treated with Iberdomide.

Inclusion Criteria

I have been diagnosed with multiple myeloma and it can be measured.

My myeloma has worsened despite my last treatment.

I can take care of myself and am up and about more than half of my waking hours.

Exclusion Criteria

Any condition that confounds the ability to interpret data from the study

Other protocol-defined Inclusion/Exclusion criteria apply

My multiple myeloma has spread to my brain or spinal cord.

Timeline

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants receive either Iberdomide, Daratumumab, and Dexamethasone (IberDd) or Daratumumab, Bortezomib, and Dexamethasone (DVd) until confirmed progressive disease, unacceptable toxicity, or withdrawal of consent

Up to approximately 5 years

Follow-up

Participants are monitored for safety and effectiveness after treatment discontinuation for reasons other than confirmed progressive disease or withdrawal of consent

Up to approximately 5 years

Treatment Details

Interventions

• Bortezomib
• Daratumumab
• Dexamethasone
• Iberdomide

Trial Overview The study compares two drug combos in patients whose multiple myeloma has returned or didn't respond to treatment: one group gets Iberdomide with Dexamethasone and Daratumumab; the other gets Daratumumab, Bortezomib, and Dexamethasone. The goal is to see which works better.

Participant Groups

Group I: Daratumumab in combination with Iberdomide and dexamethasone - Dose 3 Experimental Treatment 3 Interventions

Group II: Daratumumab in combination with Iberdomide and dexamethasone - Dose 2 Experimental Treatment 3 Interventions

Group III: Daratumumab in combination with Iberdomide and dexamethasone - Dose 1 Experimental Treatment 3 Interventions

Participants will receive oral iberdomide, subcutaneous daratumumab and oral dexamethasone.

Group IV: Daratumumab in combination with dexamethasone and bortezomib Active Control 3 Interventions

Participants will receive subcutaneous daratumumab, bortezomib and oral dexamethasone

Bortezomib is already approved in European Union, United States, Canada, Japan for the following indications:

Approved in European Union as Velcade for:

• Multiple myeloma
• Mantle cell lymphoma

Approved in United States as Velcade for:

• Multiple myeloma
• Mantle cell lymphoma

Approved in Canada as Velcade for:

• Multiple myeloma
• Mantle cell lymphoma

Approved in Japan as Velcade for:

• Multiple myeloma
• Mantle cell lymphoma

Who Is Running the Clinical Trial?

Celgene

Lead Sponsor

Trials

649

Recruited

130,000+

Top Products

>- **Revlimid (lenalidomide)**: Multiple myeloma, myelodysplastic syndromes, and mantle cell lymphoma treatment. - **Pomalyst (pomalidomide)**: Relapsed/refractory multiple myeloma treatment. - **Otezla (apremilast)**: Psoriatic arthritis treatment. - **Thalomid (thalidomide)**: Erythema nodosum leprosum and multiple myeloma treatment.

Jay Backstrom

Celgene

Chief Medical Officer since 2016

MD

Mark Alles

Celgene

Chief Executive Officer since 2016

Bachelor's degree from Lock Haven University of Pennsylvania

Findings from Research

In a subgroup analysis of the CASTOR trial involving 498 patients, daratumumab combined with bortezomib and dexamethasone (D-Vd) significantly prolonged progression-free survival (PFS) in patients with high cytogenetic risk (12.6 months) compared to bortezomib and dexamethasone alone (6.2 months).

D-Vd also demonstrated a higher rate of minimal residual disease (MRD) negativity, indicating deeper responses in treatment effectiveness, while maintaining a safety profile consistent with the overall study population.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Daratumumab, bortezomib, and dexamethasone in relapsed or refractory multiple myeloma: subgroup analysis of CASTOR based on cytogenetic risk. Weisel, K., Spencer, A., Lentzsch, S., et al.[2021]

In the final analysis of the CASTOR study, daratumumab combined with bortezomib and dexamethasone (D-Vd) significantly improved overall survival (OS) in patients with relapsed or refractory multiple myeloma, with a median OS of 49.6 months compared to 38.5 months for bortezomib and dexamethasone alone (Vd).

The study, which followed patients for a median of 72.6 months, found that D-Vd provided OS benefits across various subgroups, including older patients and those with high-risk disease, although it was associated with higher rates of certain adverse events like thrombocytopenia and neutropenia.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Overall Survival With Daratumumab, Bortezomib, and Dexamethasone in Previously Treated Multiple Myeloma (CASTOR): A Randomized, Open-Label, Phase III Trial. Sonneveld, P., Chanan-Khan, A., Weisel, K., et al.[2023]

In a phase 3 study (CASTOR) with a median follow-up of 19.4 months, the combination of daratumumab, bortezomib, and dexamethasone significantly improved progression-free survival (16.7 months) compared to bortezomib and dexamethasone alone (7.1 months), indicating its efficacy in treating relapsed/refractory multiple myeloma.

Daratumumab plus bortezomib and dexamethasone also showed a higher overall response rate (83.8% vs. 63.2%) and was particularly beneficial for patients with one prior line of therapy, demonstrating a favorable safety profile consistent over time.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Daratumumab plus bortezomib and dexamethasone versus bortezomib and dexamethasone in relapsed or refractory multiple myeloma: updated analysis of CASTOR. Spencer, A., Lentzsch, S., Weisel, K., et al.[2019]

In a study of 22 patients with relapsed or refractory multiple myeloma, the combination of bortezomib and dexamethasone (BD therapy) resulted in a high response rate, with 77.3% achieving at least a partial response, indicating its efficacy.

Switching to a once-weekly administration of bortezomib after initial twice-weekly treatment significantly reduced severe gastrointestinal side effects while maintaining the therapy's effectiveness, suggesting a safer dosing strategy.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Efficacy and safety of bortezomib plus dexamethasone therapy for refractory or relapsed multiple myeloma: once-weekly administration of bortezomib may reduce the incidence of gastrointestinal adverse events. Fukushima, T., Nakamura, T., Iwao, H., et al.[2015]

In a study of 23 patients with relapsed or refractory multiple myeloma, both low (1.0 mg/m2) and standard (1.3 mg/m2) doses of bortezomib combined with dexamethasone showed similar response rates, with 70% for the low dose and 61.5% for the standard dose, indicating that lower doses can be just as effective.

However, the standard dose of 1.3 mg/m2 was associated with more adverse effects, including serious infections and treatment-related deaths, suggesting that while it may be more effective, it also carries a higher risk of toxicity.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

[Effects of bortezomib at different doses in combination with dexamethasone in treatment of relapsed or refractory multiple myeloma: a comparative study]. Bao, L., Lu, XJ., Zhang, XH., et al.[2015]

Iberdomide combined with dexamethasone demonstrated meaningful clinical activity in heavily pretreated patients with relapsed or refractory multiple myeloma, achieving an overall response rate of 32% in the dose-escalation cohort and 26% in the dose-expansion cohort, indicating its potential effectiveness even in difficult-to-treat cases.

The treatment was generally safe, with a recommended phase 2 dose established at 1.6 mg, although some patients experienced serious adverse events, including neutropenia and infections, highlighting the need for careful monitoring during treatment.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Iberdomide plus dexamethasone in heavily pretreated late-line relapsed or refractory multiple myeloma (CC-220-MM-001): a multicentre, multicohort, open-label, phase 1/2 trial. Lonial, S., Popat, R., Hulin, C., et al.[2022]

In the phase 3 LEPUS study involving 211 Chinese patients with relapsed or refractory multiple myeloma, the combination of daratumumab, bortezomib, and dexamethasone (D-Vd) significantly prolonged progression-free survival (PFS) compared to bortezomib and dexamethasone alone (median PFS of 14.8 months vs. 6.3 months).

D-Vd also showed higher overall response rates and better response quality, with 84.7% of patients achieving an overall response compared to 66.7% with Vd, and no new safety concerns were identified, supporting D-Vd as a standard treatment option.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Daratumumab, Bortezomib, and Dexamethasone versus Bortezomib and Dexamethasone in Chinese Patients With Relapsed or Refractory Multiple Myeloma: Updated Analysis of LEPUS. Fu, W., Li, W., Hu, J., et al.[2023]

The addition of daratumumab to bortezomib and dexamethasone (DVd) or lenalidomide and dexamethasone (DRd) for treating relapsed or refractory multiple myeloma was shown to be effective, but the cost-effectiveness of these combinations is questionable due to high costs.

The incremental cost-effectiveness ratio (ICER) for DVd was $284,180 per quality-adjusted life year (QALY) and for DRd was $1,369,062 per QALY, indicating that significant price reductions for daratumumab would be necessary for these treatments to be considered cost-effective in the US healthcare system.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Cost-effectiveness of Daratumumab-based Triplet Therapies in Patients With Relapsed or Refractory Multiple Myeloma. Zhang, TT., Wang, S., Wan, N., et al.[2019]

References

1. England pubmed.ncbi.nlm.nih.gov

Daratumumab, bortezomib, and dexamethasone in relapsed or refractory multiple myeloma: subgroup analysis of CASTOR based on cytogenetic risk. [2021]

2. United States pubmed.ncbi.nlm.nih.gov

Overall Survival With Daratumumab, Bortezomib, and Dexamethasone in Previously Treated Multiple Myeloma (CASTOR): A Randomized, Open-Label, Phase III Trial. [2023]

3. Italy pubmed.ncbi.nlm.nih.gov

Daratumumab plus bortezomib and dexamethasone versus bortezomib and dexamethasone in relapsed or refractory multiple myeloma: updated analysis of CASTOR. [2019]

4. Greece pubmed.ncbi.nlm.nih.gov

Efficacy and safety of bortezomib plus dexamethasone therapy for refractory or relapsed multiple myeloma: once-weekly administration of bortezomib may reduce the incidence of gastrointestinal adverse events. [2015]

5. China pubmed.ncbi.nlm.nih.gov

[Effects of bortezomib at different doses in combination with dexamethasone in treatment of relapsed or refractory multiple myeloma: a comparative study]. [2015]

6. England pubmed.ncbi.nlm.nih.gov

Iberdomide plus dexamethasone in heavily pretreated late-line relapsed or refractory multiple myeloma (CC-220-MM-001): a multicentre, multicohort, open-label, phase 1/2 trial. [2022]

7. United States pubmed.ncbi.nlm.nih.gov

Daratumumab, Bortezomib, and Dexamethasone versus Bortezomib and Dexamethasone in Chinese Patients With Relapsed or Refractory Multiple Myeloma: Updated Analysis of LEPUS. [2023]

8. United States pubmed.ncbi.nlm.nih.gov

Cost-effectiveness of Daratumumab-based Triplet Therapies in Patients With Relapsed or Refractory Multiple Myeloma. [2019]