A Phase 1, Multicenter, Open-Label, First-in-Human Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Efficacy of YL217 in Patients with Advanced Solid Tumors

About This Study

Dose-Escalation Part (Part 1)Primary Objectives:•To assess the safety and tolerability of YL217 in patients with advanced solid tumors•To determine the maximum tolerated dose (MTD) of YL217 in patients with advanced solid tumorsBackfill Part (Part 2)Primary Objectives:•To further evaluate the safety and tolerability of YL217 in patients with advanced solid tumors•To determine the recommended dose(s) for expansion (RDE(s)) of YL217 in patients with advanced solid tumorsDose-Expansion Part (Part 3)Primary Objectives:•To further evaluate the efficacy of YL217 at the RDE(s) in patients with the selected advanced solid tumors such as colorectal adenocarcinoma, gastric, esophageal or gastroesophageal junction adenocarcinoma, and pancreatic adenocarcinoma•To determine the recommended phase 2 dose (RP2D) of YL217