Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 to 75

Neoadjuvant CTLA-4 and PD-1 blockade with chemoradiotherapy for locally advanced ESCC

Official title: A Prospective, Single-Arm Phase II Clinical Study of Neoadjuvant Chemoradiotherapy Combined With CTLA-4 Monoclonal Antibody Plus PD-1 Monoclonal Antibody for Locally Advanced Esophageal Cancer

Run by Sun Yat-sen University · NCT07751055 · Data updated 2026-11-12

This trial tests whether giving two immune checkpoint inhibitors before surgery, together with chemoradiotherapy, helps patients with resectable locally advanced esophageal squamous cell carcinoma.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment51 (estimated)
SponsorSun Yat-sen University
Academic / other
Drugs / interventionssintilimab, chemotherapy, immunotherapy
Locations1 site (Guangzhou, Guangdong)
StatusRecruiting
StartedAugust 1, 2026
Main results expectedApril 1, 2027
Study endsDecember 31, 2030
Registry record updatedAugust 7, 2026
Trial IDNCT07751055 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18–75 with histologically confirmed, resectable thoracic ESCC (T1-4aN1-3M0 or T3-4aN0M0), treatment-naive, adequate organ function, ECOG 0–1, and capability to consent.

Probably not a fit

Patients who fail to respond to neoadjuvant immunotherapy or who cannot undergo surgery after chemoradiotherapy may not benefit from the regimen.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a single-arm phase II study enrolling patients with resectable locally advanced thoracic ESCC. Participants receive induction therapy with a CTLA-4 inhibitor and a PD-1 inhibitor, followed by concurrent chemoradiotherapy with continued PD-1 inhibition. IMRT delivers 40 Gy in 20 fractions, and radical esophagectomy with two-field lymph node dissection is planned 6–8 weeks after neoadjuvant therapy. The trial primarily aims to assess efficacy and safety of the triplet regimen in the neoadjuvant setting. The study is conducted at a single center with strict eligibility criteria and comprehensive pre-treatment assessments.

Why it matters

Potential benefit: If successful, patients may achieve higher rates of tumor response and potential improvements in surgical outcomes and long-term control.

How similar studies have gone: Prior trials using neoadjuvant immunotherapy with chemoradiation have shown encouraging responses, but this exact CTLA-4 plus PD-1 triplet with chemoradiotherapy is investigational in this setting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Histologically confirmed resectable thoracic esophageal squamous cell carcinoma (ESCC); pretreatment clinical stage of T1-4aN1-3M0 or T3-4aN0M0 per the 8th edition of UICC staging system.
2. Treatment-naive patients without prior anti-tumor therapy.
3. Expected survival duration \> 6 months.
4. Aged between 18 and 75 years, either male or female.
5. Adequate function of major vital organs meeting the following laboratory criteria:

   1. White blood cell (WBC) ≥4.0×10⁹/L; absolute neutrophil count (ANC) ≥1.5×10⁹/L;
   2. Platelet count ≥100×10⁹/L;
   3. Hemoglobin ≥9 g/dL;
   4. Serum albumin ≥2.8 g/dL;
   5. Total bilirubin ≤1.5 × ULN; ALT, AST and/or ALP ≤2.5 × ULN;
   6. Serum creatinine ≤1.5 × ULN, or creatinine clearance \>60 mL/min.
6. Eastern Cooperative Oncology Group (ECOG) PS score: 0-1.
7. Capable of understanding the study protocol and signing written informed consent.
8. Absence of severe complications including active massive gastrointestinal hemorrhage, perforation, jaundice, bowel obstruction, or non-malignant fever \>38℃.
9. Female and male patients of childbearing potential must use effective contraception throughout relevant study period.
10. Good treatment compliance and availability for scheduled follow-up of efficacy and adverse events per study protocol.

Exclusion Criteria:

1. Patients who have received prior anti-tumor therapies including chemotherapy, radiotherapy, surgery, immunotherapy, etc.
2. Patients with known or suspected hypersensitivity to any components of CTLA-4 inhibitors, sintilimab or other monoclonal antibodies, as well as chemotherapeutic agents (nab-paclitaxel and cisplatin).
3. Patients with pre-existing hemorrhagic disorders.
4. Patients with unresectable disease due to other uncontrollable conditions.
5. Female patients who are pregnant or breastfeeding.
6. Patients lacking capacity to provide informed consent due to psychological, familial or social reasons.
7. Patients with peripheral neuropathy graded ≥ Grade 2 per CTCAE criteria.
8. Patients with a prior history of other malignancies besides esophageal cancer, except for non-melanoma skin cancer, cervical carcinoma in situ, or previously cured early-stage prostate cancer.
9. Patients with more than 10 years of diabetes mellitus and poorly controlled blood glucose.
10. Patients with severe impairment of cardiac, pulmonary, hepatic or renal function, hematological diseases or cachexia that preclude tolerance to chemotherapy, radiotherapy or surgery.
11. Patients with active or past history of autoimmune diseases (including but not limited to colitis, hepatitis, hyperthyroidism), or history of immunodeficiency diseases (HIV positive, other acquired or congenital immunodeficiency disorders), or previous history of solid organ or allogeneic hematopoietic stem cell transplantation.
12. Patients with prior history of interstitial lung disease or non-infectious pneumonia.
13. Subjects with active hepatitis B (HBV DNA ≥ 2000 IU/mL or 10⁴ copies/mL) or active hepatitis C (HCV antibody positive with HCV-RNA above the lower limit of quantification of the assay).

Where it's running

  • No.651 Dongfeng East Road,Guangzhou
    Guangzhou, Guangdong, China
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.