urabrelimab (SRF231)

Enhanced ADCP was observed with SRF231 in combination with opsonizing antibodies elotuzumab (anti-SLAMF7) and daratumumab (anti-CD38)...Cisplatin monotherapy induced modest H1975 anti-tumor activity; however, combination with SRF231 potentiated the effect of cisplatin in this model. Additionally, combination of SRF231 with docetaxel resulted in a 45% CR rate and a significant delay in H1975 tumor regrowth, as compared to a 100% regrowth rate with docetaxel monotherapy.In summary, SRF231 demonstrated significant anti-tumor activity in combination with the anti-SLAMF7 opsonizing antibody, elotuzumab, in preclinical MM xenograft models. Moreover, SRF231 potentiated the effects of taxane and platinum-based standard of care chemotherapies in preclinical NSCLC xenograft models. These results offer further guidance on the clinical development of anti-CD47 modalities in cancer treatment.