Surgery vs. Radical Chemoradiotherapy for Esophageal SCC After Neoadjuvant Immunochemotherapy
HCHTOG2603
A Multicenter, Open-Label, Randomized Controlled Phase III Clinical Trial Comparing Surgery Versus Radical Chemoradiotherapy (Organ Preservation) in Patients With Thoracic Esophageal Squamous Cell Carcinoma Achieving cCR or cPR Following Neoadjuvant Immunochemotherapy
1 other identifier
interventional
1,044
0 countries
N/A
Brief Summary
This is a Phase III, multicenter, open-label, randomized controlled trial. The study aims to compare organ preservation versus esophagectomy in patients with locally advanced, resectable thoracic esophageal squamous cell carcinoma (ESCC) who achieve a complete or partial clinical response (cCR/cPR) following neoadjuvant immunochemotherapy.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_3
Started Jun 2026
Longer than P75 for phase_3
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
June 1, 2026
CompletedFirst Posted
Study publicly available on registry
June 5, 2026
CompletedStudy Start
First participant enrolled
June 15, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 15, 2032
ExpectedStudy Completion
Last participant's last visit for all outcomes
March 15, 2032
June 10, 2026
June 1, 2026
5.8 years
June 1, 2026
June 7, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
3-year Event-Free Survival (EFS) Rate
Event-Free Survival is defined as the time from randomization (for responders) or from the start of neoadjuvant therapy (for the overall population) until the occurrence of any of the following events: Local recurrence of esophageal cancer. Distant metastasis. Death from any cause
3 years after randomization/treatment initiation
Study Arms (3)
Organ Preservation with Radical Chemoradiotherapy
EXPERIMENTALPatients achieving clinical complete or partial response (cCR/cPR) after neoadjuvant immunochemotherapy will receive definitive chemoradiotherapy for organ preservation. Radiotherapy (50.4 Gy/28 fractions, IMRT) with concurrent weekly chemotherapy (e.g., paclitaxel + cisplatin). Patients with ycCR after chemoradiotherapy will enter observation. Patients with residual disease will undergo salvage esophagectomy.
Immediate Esophagectomy
EXPERIMENTALPatients achieving cCR/cPR after neoadjuvant immunochemotherapy will undergo immediate radical esophagectomy (McKeown or Ivor-Lewis procedure) with 2-field or 3-field lymph node dissection. Postoperative immunotherapy (up to 8 cycles) may be administered based on pathological findings (ypT≥1 or N+).
Non-Responder Surgery
ACTIVE COMPARATORPatients with stable disease (cSD) or progressive disease (cPD) after neoadjuvant immunochemotherapy will undergo immediate radical esophagectomy, which is the standard of care for this subgroup. Postoperative treatment is determined by pathological findings.
Interventions
This is the standard induction therapy administered to all enrolled patients. It consists of the PD-1 inhibitor Toripalimab combined with Nab-paclitaxel
Chemotherapy administered concurrently with radiotherapy
Standard surgical procedure with lymph node dissection
Eligibility Criteria
You may qualify if:
- Age 18-75 years, any sex.
- ECOG Performance Status 0-1.
- Histologically confirmed, previously untreated thoracic esophageal squamous cell carcinoma (ESCC).
- Clinical stage cT2N0M0, T3N0-2M0 (AJCC 8th Edition), assessed as resectable with a potential for R0 resection by endoscopic ultrasound (EUS), PET-CT, and contrast-enhanced CT. Patients with cervical lymph node metastasis may also be included if deemed suitable for three-field lymphadenectomy by a multidisciplinary team assessment.
- Adequate bone marrow, hepatic, and renal function:
- Absolute neutrophil count ≥ 1.5 × 10⁹/L, Platelet count ≥ 100 × 10⁹/L, Hemoglobin ≥ 90 g/L.
- Alanine aminotransferase / Aspartate aminotransferase ≤ 2.5 × Upper Limit of Normal, Total bilirubin ≤ 1.5 × Upper Limit of Normal.
- Serum creatinine ≤ 1.5 × Upper Limit of Normal or Creatinine clearance ≥ 60 mL/min.
- Signed written informed consent form (ICF).
You may not qualify if:
- History of other malignancy within the past 5 years.
- Active autoimmune disease.
- Active Hepatitis B Virus (HBV) / Hepatitis C Virus (HCV) / Human Immunodeficiency Virus (HIV) infection.
- Severe cardiac or pulmonary insufficiency (Left Ventricular Ejection Fraction \< 50%, Forced Expiratory Volume in 1 second \< 1 L).
- Pregnancy or lactation.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER GOV
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
June 1, 2026
First Posted
June 5, 2026
Study Start
June 15, 2026
Primary Completion (Estimated)
March 15, 2032
Study Completion (Estimated)
March 15, 2032
Last Updated
June 10, 2026
Record last verified: 2026-06