Study of Adebrelimab Combined With Thymalfasin and Chemotherapy for Neoadjuvant Treatment of Esophageal Cancer

NCT07780721 | Not Yet Recruiting Phase 2

• 1 other identifier: 2026161
• Study Type: interventional
• Target: 31
• Locations: 1 country
• Sites: 1

Brief Summary

This is a prospective, single-arm, multicenter clinical study conducted in China. Patients with pathologically or cytologically confirmed resectable esophageal squamous cell carcinoma will be enrolled to explore the efficacy and safety of adebrelimab combined with thymalfasin and chemotherapy as neoadjuvant therapy for resectable esophageal squamous cell carcinoma. The study consists of a screening period (from the signing of informed consent by subjects to the first study drug administration, no more than 21 days), a treatment period (including neoadjuvant therapy and surgery), and a follow-up period (comprising safety follow-up and survival follow-up). During neoadjuvant therapy, patients will receive 2 to 3 cycles of adebrelimab combined with thymalfasin and chemotherapy, followed by surgical resection.

Conditions

Esophageal Cancer

Keywords

Chemotherapy; Adebrelimab; neoadjuvant treatment; Esophageal Cancer

Outcome Measures

Primary Outcomes (1)

• Pathologic Complete Response (pCR) Rate

  Defined as the proportion of subjects with Grade I pathological response per the pathological response evaluation criteria after neoadjuvant therapy, i.e., no residual viable tumor in the primary tumor lesion.

  2 weeks after surgery

Secondary Outcomes (6)

• R0 Resection Rate

  2 weeks after surgery

• Major Pathologic Response （MPR）Rate

  2 weeks after surgery

• Disease-Free Survival(DFS)

  Defined as the time from the date of surgery (the first disease-free day) to local or distant disease recurrence, or death from any cause, whichever occurs first.Assessed for a maximum of 60 months.

• Objective Response Rate(ORR）

  At the end of Cycle 2-3 (each cycle is 21 days)

• Overall Survival(OS)

  From date of first study drug administration until death from any cause, assessed up to study completion。Assessed for a maximum of 60 months.

Study Arms (1)

Treatment Arm (Adebrelimab + Thymalfasin + Chemotherapy Neoadjuvant Regimen)

EXPERIMENTAL

All eligible patients receive neoadjuvant therapy for 2-3 cycles (3 weeks per cycle), followed by radical esophagectomy with lymph node dissection.

Drug: Adebrelimab; Drug: Thymalfasin; Drug: Chemotherapy

Interventions

Adebrelimab DRUG

Adebrelimab: 1200 mg, intravenous infusion on Day 1, every 3 weeks (Q3W)

Treatment Arm (Adebrelimab + Thymalfasin + Chemotherapy Neoadjuvant Regimen)

Thymalfasin DRUG

Thymalfasin: 1.6 mg, subcutaneous injection twice weekly for every 3-week cycle.

Treatment Arm (Adebrelimab + Thymalfasin + Chemotherapy Neoadjuvant Regimen)

Chemotherapy DRUG

Nab-paclitaxel: 260 mg/m², intravenous infusion on Day 1, every 3 weeks (Q3W); Cisplatin: 75 mg/m², intravenous infusion on Day 1 / Day 2 / Day 3, every 3 weeks (Q3W); OR Carboplatin: AUC = 5-6, intravenous infusion on Day 1, every 3 weeks (Q3W).

Treatment Arm (Adebrelimab + Thymalfasin + Chemotherapy Neoadjuvant Regimen)

Eligibility Criteria

• Age: 18 Years - 80 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Has signed the written informed consent form and voluntarily participates in this study;
• Aged 18-80 years, male or female;
• Histopathologically or cytologically confirmed esophageal squamous cell carcinoma;
• Clinical stage: cT1b-cT2N+M0 or cT3-cT4a any N M0;
• Has at least one measurable lesion (per RECIST Version 1.1: the measurable lesion has a longest diameter ≥10 mm on spiral CT scan, or a malignant lymph node with short-axis diameter ≥15 mm);
• Expected to achieve R0 resection;
• ECOG Performance Status (PS) 0-1 (see Appendix 1);
• Has not received any prior anti-tumor therapy for esophageal cancer, including radiotherapy, chemotherapy, surgery, etc.;
• Plans to receive surgical resection after completion of neoadjuvant therapy;
• No contraindications to surgery.
• Adequate organ function as specified below:
• Hematology laboratory values (No blood products, hematopoietic growth factors, leukopoietic agents, thrombopoietic agents or anti-anemia medications are permitted within 14 days prior to the first study drug administration):
• White blood cell count ≥ 3.0 × 10⁹/L Absolute neutrophil count ≥ 1.0 × 10⁹/L Platelet count ≥ 80 × 10⁹/L Hemoglobin ≥ 90 g/L
• Serum chemistry:
• Total bilirubin ≤ 1.5 × ULN Alanine transaminase (ALT) ≤ 2.5 × ULN; Aspartate transaminase (AST) ≤ 2.5 × ULN Serum creatinine ≤ 1.5 × ULN, or creatinine clearance ≥ 50 mL/min (calculated by the Cockcroft-Gault formula, see Appendix 2)

You may not qualify if:

• Tumor invades adjacent organs of the esophageal lesion (major arteries or trachea);
• Uncontrolled pleural effusion, pericardial effusion or ascites requiring repeated drainage;
• History of allergy to any component of monoclonal antibodies, adebrelimab, thymalfasin, paclitaxel, carboplatin or other platinum agents;
• Previously received or currently receiving any of the following treatments:
• Any anti-tumor radiotherapy, chemotherapy, immunotherapy, targeted therapy or other anti-neoplastic agents;
• Immunosuppressive agents or systemic corticosteroids administered for immunosuppressive purposes (prednisone \>10 mg/day or equivalent dose) within 2 weeks prior to the first study drug administration. Inhaled or topical steroids, and corticosteroid replacement therapy (prednisone \>10 mg/day or equivalent dose) are permitted in the absence of active autoimmune disease;
• Live attenuated vaccines administered within 4 weeks prior to the first study drug administration;
• Major surgery or severe trauma within 4 weeks prior to the first study drug administration.
• Active autoimmune disease or history of autoimmune disease, including but not limited to: interstitial pneumonia, enteritis, hepatitis, hypophysitis, vasculitis, nephritis, hyperthyroidism, hypothyroidism (subjects receiving hormone replacement therapy may be enrolled). Subjects with psoriasis or childhood asthma/allergies completely resolved without any intervention in adulthood can be considered eligible; patients requiring medical intervention with bronchodilators are excluded.
• History of immunodeficiency, including positive HIV test, other acquired or congenital immunodeficiency diseases, history of solid organ transplantation or allogeneic bone marrow transplantation;
• Poorly controlled cardiac signs or diseases, including but not limited to: (1) NYHA Class II or higher heart failure; (2) unstable angina pectoris; (3) myocardial infarction within 1 year; (4) clinically significant supraventricular or ventricular arrhythmia without clinical intervention or still poorly controlled after intervention.
• Severe infection (CTCAE Grade \>2) within 4 weeks before the first study drug administration, such as severe pneumonia requiring hospitalization, bacteremia, infectious complications, etc. Active pulmonary inflammation indicated by baseline chest imaging; subjects presenting with signs and symptoms of infection within 14 days before first dosing or requiring oral/intravenous antibiotics, except for prophylactic antibiotic use.
• Active pulmonary tuberculosis confirmed by medical history or CT scan; history of active pulmonary tuberculosis within 1 year before enrollment; or history of active pulmonary tuberculosis more than 1 year previously without standardized treatment.
• Hereditary bleeding diathesis or coagulation disorders. Clinically significant bleeding events or definite bleeding tendency within 3 months before enrollment, such as gastrointestinal bleeding, hemorrhagic gastric ulcer, baseline fecal occult blood ≥++.
• Diagnosis of another malignant tumor within 5 years prior to the first study drug administration, except malignancies with low risk of metastasis or death (5-year survival rate \>90%). Fully treated basal cell carcinoma or squamous cell carcinoma of the skin, carcinoma in situ of cervix, etc., may be considered for enrollment.

Sponsors & Collaborators

• The Affiliated Hospital of Putian University: lead

Study Sites (1)

Affiliated Hospital of Putian University

Putian, Fujian, 351100, China

Location

MeSH Terms

Conditions

Esophageal Neoplasms

Interventions

Thymalfasin; Drug Therapy

Condition Hierarchy (Ancestors)

Gastrointestinal Neoplasms; Digestive System Neoplasms; Neoplasms by Site; Neoplasms; Head and Neck Neoplasms; Digestive System Diseases; Esophageal Diseases; Gastrointestinal Diseases

Intervention Hierarchy (Ancestors)

Thymosin; Thymus Hormones; Hormones; Hormones, Hormone Substitutes, and Hormone Antagonists; Peptide Hormones; Peptides; Amino Acids, Peptides, and Proteins; Proteins; Therapeutics

Central Study Contacts

guozhong Huang, Bachelor's Degree

CONTACT

13959560301; 13959560301@163.com

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: August 3, 2026
• First Posted: August 21, 2026
• Study Start: August 30, 2026
• Primary Completion (Estimated): August 1, 2028
• Study Completion (Estimated): February 1, 2029
• Last Updated: August 21, 2026

Record last verified: 2026-08

Data Sharing

• IPD Sharing: Will not share

Locations

CN (1)