ADCT-601 demonstrates robust AXL expression linked to anti-tumor activity in preclinical models of ACC, establishing a proof-of-concept for targeting AXL in this rare cancer. These findings support clinical translation of AXL-targeting ADC as a novel biomarker-driven therapy for patients in ACC.
EnaV had an acceptable safety profile; however, because the evaluation of antitumor activity did not show clinically meaningful responses, clinical development of EnaV was discontinued.
Furthermore, in nonhuman primates, mecbotamab vedotin demonstrated excellent tolerability at doses of up to 5 mg/kg and maintained linker-payload stability in vivo. These findings indicate that mecbotamab vedotin has the potential to be a robust and less toxic therapeutic agent, offering promise as a treatment for patients with AXL-positive cancers.
Immunotherapeutic strategies for neuroblastoma must address the potential of epigenetic downregulation of antigen density as a mechanism for immune evasion. We identified several RTKs as candidate MES-specific immunotherapeutic target proteins for the elimination of therapy-resistant cells. We hypothesize that the phenomena of immune escape will be less likely when targeting pan-neuroblastoma cell surface proteins such as B7-H3 and L1CAM, and/or dual targeting strategies that consider both the ADRN- and MES-cell states.