Study of Induction Immunochemotherapy Followed by Concurrent Chemoradiotherapy Using ctDNA Monitoring for Inoperable Esophageal Squamous Cell Cancer in Adults Aged 18 to 75

What this Trial Is About

Esophageal squamous cell carcinoma ESCC is a common and deadly cancer in China, with many patients diagnosed at advanced stages. This study evaluates a combined treatment approach using induction immunochemotherapy followed by concurrent chemoradiotherapy, aiming to improve outcomes for patients with locally advanced, unresectable ESCC. Researchers also focus on using circulating tumor DNA ctDNA to monitor treatment response and predict tumor progression, as ctDNA changes can appear before imaging detects recurrence. Participants receive induction immunochemotherapy consisting of toripalimab combined with paclitaxel and cisplatin every three weeks for two cycles. This is followed by radical concurrent chemoradiotherapy with weekly paclitaxel and cisplatin for five cycles along with radiotherapy delivered five days per week. The study dynamically monitors ctDNA levels at several points before treatment, before chemoradiotherapy, after 20 radiotherapy fractions, and every three months after treatment completion. During the study, participants undergo regular assessments including blood tests for ctDNA analysis and monitoring of tumor status. The main outcome measured is progression-free survival at one year. Safety and efficacy are tracked throughout the treatment and follow-up periods. The total participation duration and timing of assessments are carefully planned to evaluate the treatment strategy and its correlation with patient prognosis.

A Multicenter Prospective Study Evaluating Concurrent Chemoradiotherapy Following Induction Immunochemotherapy for Esophageal Cancer Based on Dynamic ctDNA Monitoring