Exploratory Clinical Study of Personalized mRNA Tumor Vaccine RH125 in Patients With Advanced Solid Tumors

This study will be divided into monotherapy dose escalation and combination therapy dose escalation phases. Each phase requires the enrollment of 12-18 subjects, with a total of 24-36 subjects to be enrolled in the entire study. Both the monotherapy dose escalation and combination therapy dose escalation will involve 3 dose levels, which are 100 μg, 150 μg, and 200 μg respectively. A "3+3" design will be adopted, and the Dose-Limiting Toxicity (DLT) observation period will be 21 days for both phases.