New hope for Hard-to-Treat myeloma: first human trial of forimtamig begins
NCT ID NCT04557150
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-stage trial tested a new drug called forimtamig in 225 people with multiple myeloma that had returned or stopped responding to standard treatments. The main goals were to check safety and find the right dose. Participants received the drug by IV or injection, and researchers monitored side effects and how the drug moved through the body.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Forimtamig (RO7425781)
- What this could lead to
- If successful, this could lead to a new treatment option for people with multiple myeloma who have run out of standard therapies.
- What could go wrong
- This is an early Phase 1 trial focused on safety and dosing, so it is not yet proven to work. Side effects and limited effectiveness are possible.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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225 people
The number who actually took part.
- Started
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Nov 2020
- Finished
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Mar 2026
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Previously diagnosed with Multiple Myeloma (MM) based on standard criteria. * Dose Escalation Phase and Dose Expansion Phase: Participants with r/r MM who have previously received therapy with an Immunomodulatory drug (IMiD) and Proteasome Inhibitor (PI) and are intolerant to or have no other option for standard-of-care treatment according to the Investigator. * Life expectancy of at least 12 weeks. * Agreement to provide protocol-specific biopsy material. * AEs from prior anti-cancer therapy resolved to Grade =\<1. * Measurable disease. * For female participants of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse), use contraceptive measures and refrain from donating eggs. * For male participants: agreement to remain abstinent (refrain from heterosexual intercourse), use contraceptive measures and refrain from donating sperm. Exclusion Criteria: * Inability to comply with protocol-mandated hospitalization and activities restrictions. * Pregnant or breastfeeding or intending to become pregnant during the study or within 3 months after last dose of study drug. * Prior use of any monoclonal antibody, radioimmunoconjugate, or antibody-drug conjugate for MM treatment within 2 weeks before first forimtamig administration. * Prior treatment with systemic immunotherapeutic agents within 2 weeks before first forimtamig administration. * Treatment-related, immune-mediated AEs associated with prior immunotherapeutic agents. * Treatment with radiotherapy, any chemotherapeutic agent, or treatment with any other anti-cancer agent (investigational or otherwise) within 2 weeks, prior to first forimtamig administration. Limited field palliative radiotherapy for bone pain or for soft tissue lesions is allowed. * Autologous or allogeneic stem cell transplantation (SCT) within 100 days prior to first forimtamig infusion and/or signs of chronic graft versus host disease or ongoing immunosuppressive medication. * Prior solid organ transplantation. * Active auto-immune disease or flare within 6 months prior to start of study treatment * Any medical condition or abnormality in clinical laboratory tests that, in the Investigator's or Medical Monitor's judgment, precludes the participant's safe participation in and completion of the study, or which could affect compliance with the protocol or interpretation of results.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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CHRU Lille - Hôpital Claude Huriez
Lille, 59037, France
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CHU NANTES - Hôtel Dieu
Nantes, 44093, France
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Clinica Universitaria de Navarra
Pamplona, Navarre, 31008, Spain
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Fond. IRCCS Istituto Nazionale Tumori
Milan, Lombardy, 20133, Italy
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Hopital De Haut Leveque
Pessac, 33604, France
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Hospital Clinico Universitario de Salamanca
Salamanca, 37007, Spain
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Hospital Universitario Marques de Valdecilla
Santander, Cantabria, 39008, Spain
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IRCCS Istituto Nazionale dei Tumori di Napoli - Pascale Ematologia Oncologica
Naples, Campania, 80131, Italy
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Instituto Clinico Humanitas
Rozzano, Lombardy, 20089, Italy
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New Zealand Clinical Research - Auckland
Auckland, 1010, New Zealand
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Odense Universitetshospital
Odense C, 5000, Denmark
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Peter MacCallum Cancer Center
Melbourne, Victoria, 3000, Australia
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Policlinico S.Orsola-Malpighi
Bologna, Emilia-Romagna, 40138, Italy
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Rigshospitalet
København Ø, 2100, Denmark
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Samsung Medical Center
Seoul, 06351, South Korea
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Seoul National University Hospital
Seoul, 03080, South Korea
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Seoul St Mary's Hospital
Seoul, 06591, South Korea
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St James University Hospital
Leeds, LS9 7TF, United Kingdom
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UZ Gent
Ghent, 9000, Belgium
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University College London Hospitals NHS Foundation Trust
London, W1T 7HA, United Kingdom
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Bispecific antibody combo aims to deepen myeloma responses
- Can a stronger drug cocktail give older myeloma patients a better start?
- Cheap blood count ratios eyed as window into Myeloma's inflammatory grip
- Can a t-cell engager rescue myeloma that outsmarted CAR-T?
- Can myeloma treatment work without steroids?
- Double-Drug attack on Hard-to-Treat lymphomas