A Phase II Single-arm Clinical Study in the Treatment of Locally Advanced Esophageal Cancer After Failed Neoadjuvant Chemoimmunotherapy

Iparomlimab and Tuvonralimab Combined With Chemoradiotherapy in the Treatment of Locally Advanced Esophageal Cancer After Failed Neoadjuvant Chemoimmunotherapy: a Prospective, Single-arm, Multicenter, Phase II Clinical Study

The goal of this clinical trial is Iparomlimab and tuvonralimab (QL1706) combined with chemoradiotherapy in the treatment of locally advanced esophageal cancer after failed neoadjuvant chemoimmunotherapy. The main question it aims to answer is： Can it bring survival benefits and safet to patients？Subsequent evaluation will determine whether the patient undergoes surgical treatment. Follow-up will be conducted to assess the efficacy and safety of the treatment。

Study Overview

• Status: Not yet recruiting
• Conditions: Local Advanced Esophageal Cancer
• Intervention / Treatment: Drug: QL1706

Detailed Description

Participants were treated with QL1706 and radical CCRT.After receiving the combination of QL1706 with radical CCRT, patients who are eligible for surgery will undergo the procedure, while those who are not candidates for surgery may receive sequential boost radiotherapy to PGTV at a about dose of 60 Gy. Following radiotherapy, maintenance treatment with immunotherapy combined with chemotherapy will be administered for up to one year, until disease progression, death, or the occurrence of intolerable toxicity.

• Study Type: Interventional
• Enrollment (Estimated): 40
• Phase: Phase 2

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Age 18 to 75 years, male or female;

  • Histologically confirmed locally advanced squamous cell carcinoma or adenocarcinoma of the esophagus or esophagogastric junction;

    • ECOG performance status 0-1; ④ Failure of or local progression after 2-4 cycles of first-line chemotherapy combined with immunotherapy, or deemed unresectable by surgical evaluation;

      ⑤ At least one measurable lesion according to RECIST v1.1 criteria;

      ⑥ Adequate major organ and bone marrow function: Hematology: Hemoglobin (Hb) ≥90 g/L (without transfusion within 14 days); Absolute neutrophil count (NEUT) ≥1.5×10⁹/L; Platelets (PLT) ≥100×10⁹/L; Biochemistry: Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤2.5×ULN (≤5×ULN in cases of liver metastases); Total bilirubin (TBIL) ≤2×ULN; Serum albumin (ALB) ≥28 g/L; Serum creatinine (Cr) ≤1.5×ULN and creatinine clearance >50 μmol/L; Coagulation: International normalized ratio (INR) and activated partial thromboplastin time (APTT) ≤1.5×ULN (unless the subject is receiving anticoagulant therapy and INR and APTT are within the expected therapeutic range);

      ⑦ Effective contraception during the study period;

      • Voluntary participation in this study with signed informed consent and good compliance.

Exclusion Criteria:

• Active bleeding or high risk of bleeding (as assessed by the investigator);

  • Patients requiring systemic anti-infective therapy;

    • Concurrent primary malignant tumors other than esophageal cancer (excluding cured basal cell carcinoma of the skin and carcinoma in situ of the cervix);

      • Presence of brainstem, leptomeningeal metastasis, spinal cord metastasis, or compression;

        • Complicated with severe cardiovascular diseases, such as uncontrolled heart failure, coronary heart disease, cardiomyopathy, uncontrolled arrhythmia, uncontrolled hypertension, or history of myocardial infarction within the past 5 years; and complicated with other uncontrolled acute or chronic diseases;

          • Positive for human immunodeficiency virus antibody (HIVAb), active tuberculosis, active hepatitis B virus infection (HBsAg positive and HBV-DNA > 500 IU/ml or the upper limit of normal, whichever is higher), or active hepatitis C virus infection (HCV antibody positive and HCV-RNA > lower limit of detection);

            • Known allergy to any component of any study drug; known history of severe hypersensitivity reactions to other monoclonal antibodies; ⑧ Adverse reactions from prior immunotherapy not fully recovered;

              • Receiving systemic glucocorticoid therapy (excluding nasal spray, inhalation, or other topical glucocorticoids) or any other form of immunosuppressive therapy within 7 days prior to the first study drug administration;

                ⑩ Active autoimmune disease requiring systemic treatment (e.g., disease-modifying drugs, glucocorticoids, or immunosuppressants) within 2 years prior to study administration. Replacement therapies (e.g., thyroxine, insulin, or physiologic glucocorticoids for adrenal or pituitary insufficiency, etc.) are not considered systemic treatments;

                ⑪ Known history of mental illness, substance abuse, alcoholism, or drug addiction;

                ⑫ Pregnant or breastfeeding women;

                ⑬ Other conditions deemed unsuitable for participation in this study by the investigator, including but not limited to poor patient compliance, intolerance, etc.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Group1; QL1706 and radical CCRT

Drug: QL1706; QL1706(Iparomlimab and Tuvonralimab Injection): 5.0 mg/kg Q3W for 2 cycles; Radiotherapy Prescription Dose: 95% PGTV 40-50 Gy/20-25 fractions; Tegafur: 40-60 mg/m² twice daily (d1-14) every 3 weeks for 2 cycles; Evaluation for surgery: Patients will be divided into surgical and non-surgical groups. Participants who are not candidates for surgery may receive sequential boost radiotherapy to PGTV at a about dose of 60 Gy. Following radiotherapy, maintenance treatment with immunotherapy combined with chemotherapy will be administered for up to one year, until disease progression, death, or the occurrence of intolerable toxicity.; Other Names: radical CCRT

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Event-free Survival(EFS)	time from treatment to disease progression, local or distant recurrence, or death	From enrollment to the end of monitoring at 2 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Overall Survival (OS)	The time from the start of treatment to death from any cause	From enrollment to the end of monitoring at 2 years
Progression-Free Survival(PFS)	time from treatment to the first documented disease progression or death	From enrollment to the end of monitoring at 2 years
Adverse reaction		From the start of treatment to within 90 days after the end of treatment.

Collaborators and Investigators

• Sponsor: Cancer Institute and Hospital, Chinese Academy of Medical Sciences
• Collaborators: The First Affiliated Hospital with Nanjing Medical University; The Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School; The Luhe Teaching Hospital of the Capital Medical University; Beijing Chest Hospital, Capital Medical University

Study record dates

Study Major Dates

• Study Start (Estimated): April 1, 2026
• Primary Completion (Estimated): December 31, 2027
• Study Completion (Estimated): August 31, 2028

Study Registration Dates

• First Submitted: March 16, 2026
• First Submitted That Met QC Criteria: April 13, 2026
• First Posted (Actual): April 15, 2026

Study Record Updates

• Last Update Posted (Actual): April 15, 2026
• Last Update Submitted That Met QC Criteria: April 13, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Keywords: Immunotherapy; Esophageal cancer; chemoradiotherapy; concurrent chemoradiotherapy; QL1706
• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Gastrointestinal Neoplasms; Digestive System Neoplasms; Digestive System Diseases; Gastrointestinal Diseases; Head and Neck Neoplasms; Esophageal Diseases; Esophageal Neoplasms
• Other Study ID Numbers: NCC5675

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No