Clinical trial Recruiting at 16 sites Observational Ages 18 and up

Assessing the effectiveness of teclistamab for multiple myeloma

Official title: Prospective Observational Study on the Clinical Efficacy of Teclistamab and Talquetamab in Patients With Relapsed and Refractory Multiple Myeloma in Belgium

Run by Universitaire Ziekenhuizen KU Leuven · NCT06477783 · Data updated 2026-11-12

This study is testing if teclistamab can help people with relapsed or hard-to-treat multiple myeloma who have already tried at least three other treatments.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment100 (estimated)
SponsorUniversitaire Ziekenhuizen KU Leuven
Academic / other
Drugs / interventionsteclistamab, talquetamab
Locations17 sites (Bonheiden, Antwerpen and 16 other locations)
StatusRecruiting
StartedDecember 1, 2024
Main results expectedSeptember 2027
Study endsSeptember 2027
Registry record updatedSeptember 25, 2026
Trial IDNCT06477783 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older with relapsed and refractory multiple myeloma who have received at least three prior lines of treatment.

Probably not a fit

Patients who have previously participated in a teclistamab trial or have started teclistamab treatment more than 14 days before screening may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to evaluate the clinical efficacy and safety of teclistamab (Tecvayli®) in patients with relapsed or refractory multiple myeloma who have undergone at least three prior treatments. Participants will be monitored in a real-life setting in Belgium for a duration of up to 24 months, with monthly follow-ups for the first six months and subsequent assessments every three months. The study will track patient responses and any adverse effects associated with the treatment.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the effectiveness of teclistamab for patients with difficult-to-treat multiple myeloma.

How similar studies have gone: Other studies have shown promising results with similar bispecific antibody approaches in treating multiple myeloma, suggesting potential for success in this study.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18 years or older
* Written informed consent
* Has a diagnosis of relapsed and refractory multiple myeloma
* Has already received at least three previous treatments
* Is refractory to at least 1 proteasome inhibitor, at least 1 immunomodulatory agent, and an anti-CD38 monoclonal antibody
* Evidence of disease progression on the last line of therapy, based on determination of response by the IMWG response criteria
* Anticipated to start treatment with teclistamab or talquetamab per routine clinical care or has started with teclistamab treatment ≤28 days before intended screening visit

Exclusion Criteria:

* Has started teclistamab or talquetamab treatment \>28 days before intended screening visit.
* Inability or unwillingness to comply with the study protocol, including scheduled visits, treatment plans, or follow-up requirements.

Where it's running

  • Universitair Ziekenhuis Antwerpen (UZA)
    Edegem, Antwerpen, Belgium
    Recruiting
  • Grand Hôpital de Charleroi
    Charleroi, Henegouwen, Belgium
    Recruiting
  • EpiCURA
    Hornu, Henegouwen, Belgium
    Recruiting
  • CHU Ambroise Paré
    Mons, Henegouwen, Belgium
    Recruiting
  • Jessa Ziekenhuis
    Hasselt, Limburg, Belgium
    Recruiting
  • CHR Citadelle
    Liège, Liège, Belgium
    Recruiting
Show 11 more locations
  • CHU Liège
    Liège, Liège, Belgium
    Recruiting
  • CHU UCL Namur
    Yvoir, Namur, Belgium
    Recruiting
  • Algemeen Ziekenhuis Maria Middelares (AZMM)
    Ghent, Oost-Vlaanderen, Belgium
    Recruiting
  • Universitair Ziekenhuis Gent (UZ Gent)
    Ghent, Oost-Vlaanderen, Belgium
    Recruiting
  • Vitaz
    Sint-Niklaas, Oost-Vlaanderen, Belgium
    Recruiting
  • Institut Jules Bordet
    Brussels, Vlaams-Brabant, Belgium
    Recruiting
  • UCL Saint Luc
    Brussels, Vlaams-Brabant, Belgium
    Recruiting
  • AZ Groeninge
    Kortrijk, West-Vlaanderen, Belgium
    Recruiting
  • AZ Delta
    Roeselare, West-Vlaanderen, Belgium
    Recruiting
  • UZ Leuven Gasthuisberg
    Leuven, Belgium
    Recruiting
  • Imelda
    Bonheiden, Antwerpen, Belgium
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.