Talquetamab is a IgG4-PAA bispecific G protein-coupled receptor class C group 5 member D (GPRC5D)-directed CD3 T-cell engager. It consists of two arms - anti-GPRC5D and anti-CD3 arms - linked by two interchain disulfide bonds, each arm comprising a heavy and light chain. Talquetamab binds to GPRC5D, a cell surface receptor expressed predominantly on multiple myeloma cells, and CD3 on T cells. It works to recruit CD3-expressing T cells to GPRC5D-expressing multiple myeloma cells to induce T-cell–mediated cytotoxicity.
The Committee for Medicinal Products for Human Use (CHMP) of the EMA recommended conditional marketing authorization for talquetamab for the treatment of relapsed or refractory multiple myeloma on July 21, 2023. On August 9, 2023, talquetamab was granted FDA accelerated approval.
In the US, talquetamab is indicated for the treatment of adult patients with relapsed or refractory multiple myeloma who have received at least four prior lines of therapy, including a proteasome inhibitor, an immunomodulatory agent, and an anti-CD38 monoclonal antibody. In Europe, talquetamab is indicated in patients who received at least three prior therapies and have demonstrated disease progression on the last therapy.
These indications are contingent, as talquetamab is only approved under accelerated approval in the US and conditional marketing authorization in Europe. Continued approval for these indications may be contingent upon verification and description of clinical benefit in a confirmatory trial(s).
Chiba Cancer Center, Chiba, Japan
Hosp Univ Hm Sanchinarro, Madrid, Spain
Hosp Virgen de La Victoria, Malaga, Spain
Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, United States
Memorial Sloan Kettering Cancer Center, New York, New York, United States
Colorado Blood Cancer Institute, Denver, Colorado, United States
University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States
Indiana University, Indianapolis, Indiana, United States
Tennessee Oncology, Nashville, Tennessee, United States
Shonan Kamakura General Hospital, Kamakura-shi, Japan
Nagoya City University Hospital, Nagoya, Japan
National Hospital Organization Okayama Medical Center, Okayama, Japan
UCL - Saint Luc, Brussels, Belgium
UZ Antwerpen, Edegem, Belgium
UZ Leuven, Leuven, Belgium
Arthur J E Child Comprehensive Cancer Centre, Calgary, Alberta, Canada
University of Alabama at Birmingham, Comprehensive Cancer Center, Birmingham, Alabama, United States
University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States
Arthur J E Child Comprehensive Cancer Centre, Calgary, Alberta, Canada
City of Hope National Medical Center, Duarte, California, United States
City of Hope Orange County Lennar Foundation Cancer Center, Irvine, California, United States
Mayo Clinic in Arizona - Scottsdale, Scottsdale, Arizona, United States
University Of California San Francisco Medical Center, San Francisco, California, United States
Moffitt Cancer Center, Tampa, Florida, United States
Hosp. Univ. Germans Trias I Pujol, Badalona, Spain
University of Alabama Birmingham, Birmingham, Alabama, United States
City of Hope, Duarte, California, United States
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