Cevostamab for Multiple Myeloma

Not currently recruiting at 21 trial locations

Overseen By Reference Study ID Number: GO39775 https://forpatients.roche.com/

Age: 18+

Sex: Any

Trial Phase: Phase 1

Sponsor: Genentech, Inc.

Must not be taking: Monoclonal antibodies, Immunotherapeutics

Disqualifiers: Pregnancy, Autoimmune disease, HIV, others

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

Compensation: Varies

Number of Visits: Unknown

Duration: 21-day cycles, up to approximately 8 years

What You Need to Know Before You Apply

What is the purpose of this trial?

This trial tests a new drug, cevostamab (a T-cell dependent bispecific antibody), to determine its effectiveness for people with multiple myeloma, a type of blood cancer that has recurred or is unresponsive to treatments. The study will explore different administration methods to identify the optimal dose. Participants will receive cevostamab alone or with a pre-treatment drug called tocilizumab. Individuals with multiple myeloma who have tried other treatments without success or cannot take them are suitable candidates for this trial. As a Phase 1 trial, this research aims to understand how cevostamab works in people, offering participants the opportunity to be among the first to receive this new treatment.

Do I have to stop taking my current medications for the trial?

The trial protocol does not specify if you must stop taking your current medications. However, you cannot have had certain treatments like monoclonal antibodies, systemic immunotherapeutic agents, or chemotherapeutic agents within specific time frames before the first infusion. It's best to discuss your current medications with the trial team.

Will I have to stop taking my current medications?

The trial protocol does not specify if you must stop taking your current medications. However, you cannot have had certain cancer treatments or immunosuppressive medications recently, so it's best to discuss your specific medications with the study team.

Is there any evidence suggesting that this trial's treatments are likely to be safe?

Research shows that cevostamab holds promise for treating multiple myeloma. Studies indicate that most patients tolerate the drug well. Early results suggest that while side effects exist, they can be managed, indicating the drug's potential safety for many individuals.

Although specific side effects aren't listed, the progression of cevostamab to more advanced trials is encouraging. This typically means the treatment proved safe in earlier trials. Therefore, for those considering joining a trial, the current evidence suggests that cevostamab's safety is reassuring. ^{1 2 3 4 5}

Why are researchers excited about this trial's treatments?

Cevostamab is unique because it offers a novel approach to treating multiple myeloma by targeting FcRH5, a protein found on myeloma cells, which is different from the usual targets of traditional therapies like proteasome inhibitors or immunomodulatory drugs. This mechanism of action allows it to recruit the body's immune cells to attack the cancer more specifically. Researchers are excited about cevostamab because it has the potential to overcome resistance seen with existing treatments and may provide an option for patients who have exhausted other therapies. Additionally, the study includes innovative dosing strategies, like single, double, and triple step dose escalations, which could improve the effectiveness and safety of the treatment.

What evidence suggests that cevostamab could be an effective treatment for multiple myeloma?

Research shows that cevostamab, which participants in this trial may receive, may help treat relapsed or refractory multiple myeloma. Cevostamab is a bispecific antibody that targets two proteins: one on myeloma cells and another on immune cells called T-cells. This targeting helps the immune system find and destroy myeloma cells. Studies have found that cevostamab can work well on its own, with early results showing activity against multiple myeloma. It also has generally manageable side effects, which is important for patient safety. While more research is needed, the initial results are promising for people with this challenging condition. ^{2 4 6 7 8}

Who Is on the Research Team?

Clinical Trials

Principal Investigator

Genentech, Inc.

Are You a Good Fit for This Trial?

This trial is for adults with relapsed or refractory multiple myeloma who have tried other treatments without success, are not pregnant or breastfeeding, and can perform daily activities with minimal assistance. They must not have had certain recent treatments, transplants, major surgeries, infections including COVID-19 within specific time frames, a history of severe allergies to monoclonal antibodies, or any condition that could interfere with the study.

Inclusion Criteria

You have a disease that can be measured with lab tests.

I agree not to donate sperm and to use contraception during and for 2 months after treatment.

You are expected to live for at least 12 more weeks.

Exclusion Criteria

I have or might have a long-term EBV infection or hepatitis C.

I have not had major surgery in the last 4 weeks.

I haven't had any antibody-based cancer treatments in the last 4 weeks.

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants receive cevostamab in a dose-escalation study with various dosing schedules across different arms

21-day cycles, up to approximately 8 years

Multiple visits per cycle for dose administration and monitoring

Follow-up

Participants are monitored for safety and effectiveness after treatment

Up to approximately 8 years

What Are the Treatments Tested in This Trial?

Interventions

• Cevostamab

Trial Overview

The study tests different doses of Cevostamab given through IV infusion to see how safe it is and how well it works in treating multiple myeloma that has come back or hasn't responded to treatment. Tocilizumab may also be used if needed. It's an early-phase trial where researchers closely monitor participants' reactions.

How Is the Trial Designed?

Group I: Arm K: Compressed Double Step Dose Expansion for Cevostamab Experimental Treatment 1 Intervention

In Cycle 1, participants will receive 2 step-up doses and a target dose. The doses will be given on Cycle 1 Days 1, 4, and 8. Subsequently the target dose will be administered on Day 1 of each 21-day cycle.

Group II: Arm J: Expansion Phase for Tocilizumab Pretreatment Experimental Treatment 2 Interventions

All participants will receive a single dose of tocilizumab intravenously. An additional dose of tocilizumab may be instituted as premedication for subsequent Cycle 1 dose(s) of cevostamab and Cycle 1 cevostamab doses for other treatment arms.

Group III: Arm I: Triple Step Dose Expansion for Cevostamab Experimental Treatment 1 Intervention

The triple step dose expansion stage of the study may use the dosing and assessment schedule from the triple step dose escalation arm in Cycle 1, based on data from Arm H.

Group IV: Arm H: Triple Step Dose Escalation for Cevostamab Experimental Treatment 1 Intervention

In Cycle 1, participants will receive 3 step-up doses and a target dose. The doses will be given on Cycle 1 Days 1, 2-4, 8, and 9-11. Subsequently the target dose will be administered on Day 1 of each 21-day cycle.

Group V: Arm G: Double Step Dose Expansion for Cevostamab Experimental Treatment 1 Intervention

The double step dose expansion stage of the study may use the dosing and assessment schedule from the double step dose escalation arm in Cycle 1, based on data from Arm B.

Group VI: Arm F: Single Step Dose Expansion for Cevostamab Experimental Treatment 1 Intervention

The single step dose expansion stage of the study may use the dosing and assessment schedule from the single dose escalation arm in Cycle 1, based on data from Arm A.

Group VII: Arm E: Expansion Phase for Tocilizumab Pretreatment Experimental Treatment 2 Interventions

All participants will receive a single dose of tocilizumab intravenously. An additional dose of tocilizumab may be instituted as premedication for subsequent Cycle 1 dose(s) of cevostamab and Cycle 1 cevostamab doses for other treatment arms.

Group VIII: Arm D: Double Step Dose Expansion for Cevostamab Experimental Treatment 1 Intervention

The double step dose expansion stage of the study may use the dosing and assessment schedule from the double step dose escalation arm in Cycle 1, based on data from Arm B.

Group IX: Arm C: Single Step Dose Expansion for Cevostamab Experimental Treatment 1 Intervention

The single step dose expansion stage of the study may use the dosing and assessment schedule from the single dose escalation arm in Cycle 1, based on data from Arm A.

Group X: Arm B: Double Step Dose Escalation for Cevostamab Experimental Treatment 1 Intervention

In Cycle 1, participants will receive 2 step-up doses and a target dose. The step-up dose will be given on Cycle 1 Day 1 and C1D8. The target dose will be given on C1D15. Subsequently the target dose will be administered on Day 1 of each 21-day cycle.

Group XI: Arm A: Single Step Dose Escalation for Cevostamab Experimental Treatment 1 Intervention

Study drug will be administered intravenously on a 21-day cycle. The step-up dose will be given on Cycle 1 Day 1 and the target dose will be given on C1D8. Subsequently the target dose will be administered on Day 1 of each 21-day cycle.

Who Is Running the Clinical Trial?

Genentech, Inc.

Lead Sponsor

Trials

1,578

Recruited

569,000+

Ashley Magargee

Genentech, Inc.

Chief Executive Officer since 2024

MBA from Harvard University, BA from Princeton University

Levi Garraway

Genentech, Inc.

Chief Medical Officer since 2021

MD, PhD

Published Research Related to This Trial

Three new bispecific antibodies—teclistamab, elranatamab, and talquetamab—have received accelerated FDA approval for treating relapsed/refractory multiple myeloma, indicating their potential efficacy in this challenging condition.

While these agents show promise, the medical community is currently awaiting results from randomized phase III clinical trials to better understand their effectiveness compared to standard treatments.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

An Embarrassment of Riches: Three FDA-Approved Bispecific Antibodies for Relapsed Refractory Multiple Myeloma. Firestone, R., Lesokhin, AM., Usmani, SZ.[2023]

Teclistamab, a bispecific antibody targeting BCMA and CD3, showed a high overall response rate of 64% in a real-world study of 52 patients with relapsed/refractory multiple myeloma, including a 50% response rate in those previously treated with anti-BCMA therapies.

Immune profiling revealed that higher levels of effector CD8+ T-cells were linked to better responses to teclistamab, while regulatory T-cells were associated with nonresponse, suggesting that immune status could serve as a useful biomarker for treatment outcomes.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

CD8 effector T cells enhance response in BCMA-exposed and -naïve multiple myeloma. Firestone, RS., McAvoy, D., Shekarkhand, T., et al.[2023]

The anti-FcRH5/CD3 bispecific antibody effectively activates T cells and induces the death of multiple myeloma cells at very low concentrations, showcasing its potential as a powerful treatment for this cancer.

In preclinical studies with cynomolgus monkeys, the antibody led to complete depletion of B cells and plasma cells in the bone marrow, indicating strong efficacy and potential for use in combination therapies targeting PD-1/PD-L1 signaling.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Membrane-Proximal Epitope Facilitates Efficient T Cell Synapse Formation by Anti-FcRH5/CD3 and Is a Requirement for Myeloma Cell Killing. Li, J., Stagg, NJ., Johnston, J., et al.[2022]

The bispecific antibody BiFab-BCMA effectively redirects T cells to attack multiple myeloma cells, showing up to 20 times greater potency than a similar antibody targeting CS1.

BiFab-BCMA not only activates T cells in laboratory settings but also leads to rapid tumor regression in animal models, suggesting it could be a promising alternative to existing CAR-T therapies for treating multiple myeloma.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

An anti-B cell maturation antigen bispecific antibody for multiple myeloma. Ramadoss, NS., Schulman, AD., Choi, SH., et al.[2015]

Emerging bispecific antibody therapies targeting proteins like BCMA and GPRC5D show promising efficacy in treating relapsed/refractory multiple myeloma, with response rates between 50-80% in heavily pretreated patients.

While these therapies offer a more readily available option compared to CAR-T cell therapy, they also carry risks of adverse events such as cytokine release syndrome (40-90% incidence) and neurotoxicity (3-20% incidence), highlighting the need for careful monitoring.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

T cell redirecting bispecific antibodies for multiple myeloma: emerging therapeutic strategies in a changing treatment landscape. Kazandjian, D., Kowalski, A., Landgren, O.[2023]

SAR442085, a next-generation anti-CD38 monoclonal antibody, demonstrated superior binding affinity and enhanced antibody-dependent cellular cytotoxicity (ADCC) compared to first-generation antibodies like daratumumab and isatuximab in preclinical studies involving multiple myeloma cells.

In vivo studies using transgenic mice showed that SAR442085 resulted in better natural killer (NK) cell activation and improved antitumor efficacy, leading to increased survival rates compared to existing anti-CD38 therapies, supporting its potential for clinical evaluation in patients with relapsed/refractory multiple myeloma.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

SAR442085, a novel anti-CD38 antibody with enhanced antitumor activity against multiple myeloma. Kassem, S., Diallo, BK., El-Murr, N., et al.[2022]

Bispecific antibodies targeting antigens like BCMA, GPRC5D, and FcRH5 show a favorable safety profile in early-phase clinical trials for multiple myeloma, with low-grade side effects such as cytokine release syndrome and infections.

Preliminary efficacy data indicate response rates between 61% and 83% in heavily treated patients, suggesting that bispecific antibodies could become a key treatment option for multiple myeloma, although further studies are needed to confirm long-term effectiveness.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Bispecific Antibodies in Multiple Myeloma: Present and Future. Lancman, G., Sastow, DL., Cho, HJ., et al.[2023]

Teclistamab, a newly FDA-approved bispecific antibody, effectively targets both T-cells and myeloma cells, showing durable responses in patients with relapsed/refractory multiple myeloma who have failed multiple prior therapies, as demonstrated in the MajesTEC-1 study.

As the first bispecific antibody approved for multiple myeloma, teclistamab offers a new treatment option for patients with limited choices, and ongoing trials are exploring its use alongside other novel bispecific antibodies.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

Newly approved and forthcoming T-cell-redirecting bispecific antibodies for the treatment of relapsed/refractory multiple myeloma. Granger, K., Gaffney, KJ., Davis, JA.[2023]

The novel bispecific antibody bscWue-1 x CD3 effectively induces T-cell-mediated cell death in multiple myeloma cells, demonstrating efficacy in 9 out of 11 patient cases tested.

This antibody shows promise for targeted therapy as it selectively kills Wue-1 antigen-positive myeloma cells, even at low effector-to-target cell ratios, suggesting a potential for effective treatment with minimal side effects.

NCBI (Pubmed)

pubmed.ncbi.nlm.nih.gov

A novel recombinant bispecific single-chain antibody, bscWue-1 x CD3, induces T-cell-mediated cytotoxicity towards human multiple myeloma cells. Hönemann, D., Kufer, P., Rimpler, MM., et al.[2017]

Citations

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FcRh5: An Emerging Therapeutic Target in Multiple Myeloma

On Sep 22nd 2025, Roche announced that Cevostamab, a bispecific antibody targeting FcRH5×CD3, is advancing to Phase III clinical trials.

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pmc.ncbi.nlm.nih.gov/articles/PMC5357723/

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Membrane-proximal epitope facilitates efficient T cell synapse formation by anti-FcRH5/CD3 and is a requirement for myeloma cell killing.

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Cevostamab Plus Pomalidomide/Dexamethasone Is Safe ...

The combination of cevostamab, pomalidomide, and dexamethasone was deemed safe with early efficacy signals in relapsed/refractory multiple ...

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conference-correspondent.com/highlights/ash/bfcr4350a-a-fcrh5-x-cd3-t-cell-engaging-bispecific-antibody-in-patients-with-rrmm-preliminary-clinical-activity-and-safety

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Preliminary results from the GO39775 study show promising efficacy and manageable toxicity for BFCR4350A as monotherapy in patients with RRMM with high-risk ...

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en.wikipedia.org

en.wikipedia.org/wiki/Cevostamab

Cevostamab

Cevostamab is a bispecific T-cell engager antibody that facilitates T cell-mediated killing of multiple myeloma cells through a dual-targeting mechanism.

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kactusbio.com

kactusbio.com/blogs/news/fcrh5-an-emerging-therapeutic-target-in-multiple-myeloma?srsltid=AfmBOooWQBbx9c2eHEPsp142RoGMnWM6qKBJzX5GD3RLhdf_3PQv8m4H

FcRh5: An Emerging Therapeutic Target in Multiple Myeloma

On Sep 22nd 2025, Roche announced that Cevostamab, a bispecific antibody targeting FcRH5×CD3, is advancing to Phase III clinical trials.

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Cevostamab for Multiple Myeloma · Info for Participants

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Initial Clinical Activity and Safety of BFCR4350A, a FcRH5 ...

OffLabel Disclosure BFCR4350A is a humanized IgG-based T-cell-engaging bispecific antibody that targets the most membrane-proximal domain of FcRH5 on myeloma ...