Combining chemoradiation with QL1706 for esophageal cancer treatment

A Single Arm, Phase II Clinical Study of Chemoradiationtherapy Combined With QL1706 (Anti-CTLA-4 and PD-1 Antibody) in Patients With Unresectable Locally Advanced Esophageal Squamous Cell Carcinoma

PHASE2 · Tianjin Medical University Cancer Institute and Hospital · NCT05490719

This study is testing if adding a new antibody treatment to standard chemoradiation can help people with advanced esophageal cancer who can't have surgery.

Quick facts

PhasePHASE2
Study typeInterventional
Enrollment39 (estimated)
Ages18 Years to 75 Years
SexAll
SponsorTianjin Medical University Cancer Institute and Hospital (other)
Locations1 site (Tianjin, Tianjin Municipality)
Trial IDNCT05490719 on ClinicalTrials.gov

What this trial studies

This Phase II clinical trial evaluates the safety and efficacy of combining chemoradiation therapy with QL1706, an anti-CTLA-4 and PD-1 antibody, in patients with unresectable locally advanced esophageal squamous cell carcinoma. It is a single-arm, multi-center study aimed at patients who have not undergone surgery for their cancer. The trial will assess the treatment's effectiveness based on measurable tumor responses and safety profiles.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18-75 with histologically confirmed unresectable locally advanced esophageal squamous cell carcinoma.

Not a fit: Patients who have undergone surgery for esophageal cancer or have significant complications such as gastrointestinal bleeding or fistulas may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with advanced esophageal cancer who currently have limited treatment choices.

How similar studies have performed: While this approach combines established therapies with immunotherapy, the specific combination of QL1706 with chemoradiation in this context is novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Subjects participate voluntarily and sign informed consent.
2. age:18-75 years, male or female.
3. Histologically confirmed Advanced Unresectable Esophageal Squamous Cell Carcinomas,unresectable of clinical stage II-IVa patients (include unresectable,or surgical contraindication or refuse surgery)(According to AJCC 8th Edition stage , Pre-treatment clinical stage cT1N2-3M0,cT2-4bN0-3M0.
4. At least 1 measurable target lesion and/or unmeasurable target lesion according to Response Evaluation in Solid Tumors (RECIST 1.1).

Exclusion Criteria:

1. Patients who have a history of esophageal cancer surgery.
2. Previous history of fistula caused by primary tumor infiltration.
3. a high risk of gastrointestinal bleeding, esophageal fistula or esophageal perforation.
4. Subjects with poor nutritional status and weight loss of ≥ 10% in the first 2 months of screening have no significant improvement after nursing intervention.
5. Major surgery or serious trauma within 4 weeks before the first use of the study drug.

Where this trial is running

Tianjin, Tianjin Municipality

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Esophageal Squamous Cell Carcinoma, Esophageal Cancer, Concurrent chemoradiation, Immunotherapy, CTLA-4, PD-1, QL1706

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.