Double antibody attack shows promise for Hard-to-Treat myeloma
NCT ID NCT04586426
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a combination of two experimental drugs, talquetamab and teclistamab, in people with multiple myeloma that has come back or stopped responding to other treatments. The goal is to find the safest and most effective dose and to see how well the drugs shrink tumors. About 228 participants will take part across three parts of the study.
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 1/2
Runs two stages together: safety and dose first, then whether the treatment works.
- Participants
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228 people
The number who actually took part.
- Started
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Dec 2020
- Expected to finish
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Oct 2026
An estimate. End dates often move.
- 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: * Documented initial diagnosis of multiple myeloma according to International Myeloma Working Group (IMWG) diagnostic criteria * Part 1 and 2: Participant could not tolerate or has disease that is relapsed or refractory to established therapies, including the last line of therapy. Part 3: (a) Relapsed or refractory disease, and exposed to a PI, IMiD, and an anti-CD38 mAb; (b) Documented evidence of progressive disease based on investigator's determination of response by IMWG criteria on or after their last regimen * Part 1 and Part 2: Eastern Cooperative Oncology Group (ECOG) performance status grade of 0 or 1 at screening and immediately before the start of study drug administration. Part 3: ECOG performance status grade of 0, 1, or 2 at screening and immediately before the start of study drug administration Exclusion Criteria: * All Parts: Targeted therapy, epigenetic therapy, or treatment with an investigational treatment or an invasive investigational medical device within 21 days or at least 5 half-lives, whichever is less. Part 3: prior BCMA targeted bispecific antibody therapy; prior GPRC5D targeted therapy * All Parts: Allogeneic stem cell transplant within 6 months before the first dose of study treatment. * All Parts: Central nervous system involvement or clinical signs of meningeal involvement of multiple myeloma. * All Parts: Active plasma cell leukemia (greater than \[\>\]2.0\*10\^9/L plasma cells by standard differential), Waldenström's macroglobulinemia, POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, M- protein, and skin changes), or primary amyloid light chain amyloidosis
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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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Alberta Health Services
Edmonton, Alberta, T6G 1Z2, Canada
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Arthur J E Child Comprehensive Cancer Centre
Calgary, Alberta, T2N 5G2, Canada
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Asan Medical Center
Seoul, 05505, South Korea
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Atrium Health
Charlotte, North Carolina, 28204, United States
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Cleveland Clinic
Cleveland, Ohio, 44195, United States
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Clinica Univ. de Navarra
Pamplona, 31008, Spain
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Colorado Blood Cancer Institute
Denver, Colorado, 80218, United States
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Emory University
Atlanta, Georgia, 30322, United States
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Hadassah Medical Center
Jerusalem, 91120, Israel
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Hosp Clinic de Barcelona
Barcelona, 08036, Spain
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Hosp Clinico Univ de Salamanca
Salamanca, 37007, Spain
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Hosp Univ Fund Jimenez Diaz
Madrid, 28040, Spain
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Hosp. Univ. Germans Trias I Pujol
Badalona, 08916, Spain
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Hosp. Univ. Marques de Valdecilla
Santander, 39008, Spain
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Inst. Cat. Doncologia-H Duran I Reynals
L'Hospitalet de Llobregat, 08908, Spain
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Japanese Red Cross Medical Center
Shibuya City, 150-8935, Japan
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Kanazawa University Hospital
Kanazawa, 920-8641, Japan
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Mayo Clinic
Rochester, Minnesota, 55905, United States
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McGill University Health Centre
Montreal, Quebec, H4A 3J1, Canada
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Memorial Sloan Kettering Cancer Center
New York, New York, 10065, United States
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Mount Sinai Medical Center
New York, New York, 10029, United States
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Nagoya City University Hospital
Nagoya, 467 8602, Japan
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Oregon Health And Science University
Portland, Oregon, 97239, United States
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Osaka University Hospital
Osaka, 565-0871, Japan
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Princess Margaret Cancer Centre University Health Network
Toronto, Ontario, M5G 1X6, Canada
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Royal Perth Hospital
Perth, 6000, Australia
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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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Severance Hospital Yonsei University Health System
Seoul, 03722, South Korea
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Sheba Medical Center
Ramat Gan, 52621, Israel
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St Vincents Hospital Melbourne
Fitzroy, 3065, Australia
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Tel Aviv Sourasky Medical Center
Tel Aviv, 64239, Israel
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The Catholic University of Korea Seoul St Marys Hospital
Seoul, 06591, South Korea
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The University of Texas MD Anderson Cancer Center
Houston, Texas, 77030, United States
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Tohoku University Hospital
Sendai, 980 8574, Japan
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UNIV. HOSP. October 12
Madrid, 28041, Spain
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University of Alabama at Birmingham, Comprehensive Cancer Center
Birmingham, Alabama, 35233, United States
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University of Arkansas for Medical Sciences
Little Rock, Arkansas, 72205, United States
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Wake Forest University Baptist Medical Center (WFUBMC) - Comprehensive Cancer Center
Winston-Salem, North Carolina, 27157, United States
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Washington University St. Louis School Medicine Siteman Cancer Center
St Louis, Missouri, 63108, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- 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
- Banking blood and bone marrow to decode plasma cell disorders
- Which scan sees hidden myeloma better: PET or MRI?