CDK4 x FLT3 x AXL

This study is an exploratory clinical trial and does not involve statistical assumptions or sample size estimation. the mainly purpose for the study is to evaluate the safety of XH-30002 capsule combined with afatinib tablets in the treatment of locally advanced or metastatic esophageal squamous cell carcinoma.

观察XH-30002胶囊在晚期实体瘤患者中的安全性和耐受性，确定XH-30002胶囊单次及多次口服给药在晚期实体瘤患者中的最大耐受剂量（MTD）和/或II期推荐剂量（RP2D）。