Identifying Clinical Response to Daratumumab Therapy in Relapsed/refractory Multiple Myeloma Using a Patient-derived in Vitro Model
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Response to daratumumab in patients with relapsed/refractory multiple myeloma is heterogeneous, and a reliable biomarker of response is lacking. We aimed to develop a method that identifies response to daratumumab therapy. Patient-derived MM cells were collected before start of daratumumab treatment and were cultured in a hydrogel-based culture system. The extent of antibody-dependent cellular cytotoxicity and complement-dependent cytotoxicity in vitro was associated with both clinical response and progression-free survival in corresponding patients. Together, our results demonstrate that in vitro sensitivity to daratumumab therapy in a hydrogel culture with primary MM cells might be used to identify patients most likely to benefit from treatment.
van Nieuwenhuijzen N, Cuenca M, Abbink L, Jak M, Peperzak V, Minnema M EJHaem. 2024; 5(1):141-146.
PMID: 38406516 PMC: 10887349. DOI: 10.1002/jha2.824.