Cancer-associated fibroblasts (CAFs), as core regulators within the tumor microenvironment, significantly impede the intratumoral penetration of therapeutic agents and suppress the effective infiltration and activation of immune cells by constructing elaborate physical and functional barriers. Fibroblast activation protein (FAP) is a highly specific therapeutic target for CAFs, owing to its nearly tumor-restricted expression profile. Therefore, developing therapeutic strategies that specifically target FAP to eliminate CAFs and subsequently remodel the tumor microenvironment may effectively disrupt the multi-dimensional defense system established by CAFs, thereby significantly enhancing the delivery efficiency of anti-tumor agents and improving responsiveness to immunotherapy.
This Phase I clinical trial aims to evaluate the safety, tolerability, pharmacokinetics, immunogenicity, and preliminary antitumor activity of FAP mRNA Vaccine combined with immune checkpoint inhibitors in patients with advanced malignant solid tumors.