A Phase 1/2, First-in-Human, Open-Label, Dose Escalation Study of Talquetamab, a Humanized GPRC5D x CD3 Bispecific Antibody, in Subjects With Relapsed or Refractory Multiple Myeloma

  • End date
    Apr 13, 2026
  • participants needed
  • sponsor
    Janssen Research & Development, LLC
Updated on 22 October 2022
multiple myeloma
measurable disease


The purpose of this study is to evaluate the efficacy of talquetamab in participants with relapsed or refractory multiple myeloma at the recommended Phase 2 dose(s) (RP2Ds) (Part 3).


Multiple myeloma is a malignant plasma cell disorder characterized by osteolytic lesions, increased susceptibility to infections, hypercalcemia, and renal failure. Talquetamab is a humanized immunoglobulin G4 proline, alanine, alanine (IgG4PAA) bispecific antibody designed to target G protein-coupled receptor family C group 5-member D (GPRC5D) and the CD3 molecule found on T lymphocytes (T cell). This study consists 3 periods: screening phase (up to 28 days), treatment phase (start of study drug administration and continues until the completion of the end of treatment [EOT (30 days (+ 7 days)] visit); and a post-treatment follow-up phase (until the end of study unless the participant has died, is lost to follow up or has withdrawn consent). Total duration of study is up to 2 years (after the last participant receives their first dose). Safety, pharmacokinetics (PK), laboratory tests, and questionnaire will be assessed at specified time points during this study. Participants safety and study conduct will be monitored throughout the study. The corresponding study (NCT03399799) is the Phase 1 part of the study and TALMMY1001- Part 3 is the Phase 2 part of the study.

Condition Hematological Malignancies
Treatment Talquetamab
Clinical Study IdentifierNCT04634552
SponsorJanssen Research & Development, LLC
Last Modified on22 October 2022


Yes No Not Sure

Inclusion Criteria

Documented initial diagnosis of multiple myeloma according to international myeloma working group (IMWG) diagnostic criteria
Part 3: Measurable disease cohort A, cohort B, and cohort C: multiple myeloma must be measurable by central laboratory assessment
Eastern Cooperative Oncology Group (ECOG) performance status score of 0 to 2
Women of childbearing potential must have a negative pregnancy test at screening and prior to the first dose of study drug using a highly sensitive pregnancy test either serum (beta human chorionic gonadotropin [hCG]) or urine
Willing and able to adhere to the prohibitions and restrictions specified in this protocol

Exclusion Criteria

Part 3 only: Cohort A and Cohort C only: exposed to a CAR-T or T cell redirection therapy at any time. Cohort B: T cell redirection therapy within 3 months
Vaccinated with live, attenuated vaccine within 4 weeks or as recommended by the product manufacturer prior to the first dose, during treatment, or within 100 days of the last dose of talquetamab
Toxicities from previous anticancer therapies should have resolved to baseline levels or to Grade 1 or less except for alopecia or peripheral neuropathy
Received a cumulative dose of corticosteroids equivalent to >= 140 milligram (mg) of prednisone within the 14-day period before the first dose of study drug (does not include pretreatment medication)
Stroke or seizure within 6 months prior to signing the informed consent form (ICF)
Clear my responses

How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer  to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact


Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider


Browse trials for

Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 



Reply by • Private

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note