Emerging GPRC5D-Targeted therapies for multiple myeloma: a comprehensive review.
Talquetamab is currently the only approved GPRC5D-targeted therapy, primarily used for BCMA-refractory multiple myeloma, but there is no biological reason BCMA therapies must be exhausted before targeting GPRC5D; utilizing GPRC5D in innovative ways will be key to fully realizing its therapeutic potential. Newer trials are exploring more aggressive approaches combining multiple immunotherapy targets within a single line to prevent resistance and potentially achieve a cure. While GPRC5D-targeted therapies are highly effective, they also pose significant toxicity risks including oral, skin, nail, and cerebellar toxicity. In addition to improving efficacy, future research must also focus on optimizing dosing, identifying biomarkers for toxicity, and developing better strategies for managing adverse events to optimize the risk-benefit profile of these therapies.
