NRG promotes HNSCC cell migration by activating HER3, forming HER3-HER2 and HER3-FAK complexes, and driving downstream AKT, ERK, and FAK signaling. Targeting the NRG/HER3 axis holds potential as a therapeutic strategy to address perineural invasion and associated clinical challenges in HNC.
These results were also validated in PDX models of cohort 2 indicated as the powerful anti-tumor activity of CAN017 in PDX models with NRG1 high expression. In our study, HER3-targeting therapy was first demonstrated to have potency in inhibiting ESCC tumor growth, and NRG1 served as a predictive biomarker to screen patients in future clinical trials.