An Umbrella-designed Prospective Multicenter Randomized Open-label Superiority Trial Evaluating Multi-biomarker-guided Precision Therapy for First-line Treatment of Advanced Esophageal Squamous Cell Carcinoma

A Prospective, Multicenter, Randomized, Open-label, Superiority Clinical Trial With an Umbrella Trial Design Framework to Evaluate the Efficacy of a Precision Treatment Strategy Guided by Multiple Biomarkers in the First-line Therapy of Advanced Esophageal Squamous Cell Carcinoma

This is a prospective, multicenter, randomized, open-label, umbrella superiority clinical trial for patients with advanced metastatic esophageal squamous cell carcinoma who have not received prior anti-tumor treatment.

All eligible participants will be randomly assigned into two cohorts: Cohort A (standard treatment group) and Cohort B (biomarker-guided precision treatment group).

Patients in Cohort A will receive first-line standard therapy consisting of TP chemotherapy plus PD-1 inhibitor.

All patients in Cohort B will first complete three biomarker tests, then be divided into 4 sub-groups based on biomarker results to receive biomarker-directed additional treatment combined with the same standard backbone therapy. Participants with all negative biomarkers or failed biomarker testing will receive the identical standard treatment as Cohort A.

The primary objective is to compare the survival benefit between biomarker-guided multi-strategy precision therapy and conventional standard first-line treatment.

Study Overview

• Status: Not yet recruiting
• Conditions: Valid MeSH Conditions
• Intervention / Treatment: Drug: Paclitaxel + Cisplatin (TP regimen) plus PD-1 inhibitor; Drug: Retlirafusp alfa / Indole-3-carbinol + Black garlic fermentation extract / Lactobacillus rhamnosus / Placebo + Paclitaxel + Cisplatin (TP regimen) plus PD-1 inhibitor

Detailed Description

This umbrella-design randomized controlled trial enrolls treatment-naïve patients aged 18-75 years with histologically confirmed metastatic esophageal squamous cell carcinoma with measurable lesions per RECIST 1.1 and ECOG PS 0-1.

Subjects are randomized at a 1:3.75 ratio to standard first-line TP+PD-1 treatment (Cohort A) or biomarker-stratified experimental treatment (Cohort B). Three predictive biomarkers including plasma TGF-β, circulating metabolite score and blood Lactobacillus level will be detected at screening for Cohort B patients to allocate targeted add-on interventions.

Key exclusion criteria include uncontrolled brain metastasis, severe organ dysfunction, active severe infection, prior immune checkpointInhibitor treatment and bleeding disorders with a high risk of hemorrhage. The main efficacy endpoint is progression-free survival; secondary endpoints include objective response rate, disease control rate, overall survival, safety and so on.

• Study Type: Interventional
• Enrollment (Estimated): 347
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: XU ruihua Xuruihua; Phone Number: 020-87342479; Email: luohy@sysucc.org.cn

Study Locations

• China
  • GUANGZHOU
    • Guangdong, GUANGZHOU, China, 510000
      • Sub-i
      • Contact: Luo huiyan Luohuiyan; Phone Number: 02087343560; Email: luohy@sysucc.org.cn

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

1. Aged between 18 and 75 years (calculated on the date of signing the informed consent form);
2. Patients with metastatic esophageal squamous cell carcinoma (ESCC) confirmed by histopathology or cytology;
3. Treatment-naïve patients with no prior anti-tumor therapy;
4. Eastern Cooperative Oncology Group Performance Status (ECOG PS) of 0 or 1, with an expected survival of more than 3 months;
5. Judged by the investigator to be suitable for first-line chemotherapy;
6. Presence of at least one measurable lesion as defined by the Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST 1.1);

7. Women of childbearing potential must agree to use effective contraception (e.g., intrauterine device, oral contraceptives, condoms) throughout the study period and for 6 months after the end of study treatment; they must have a negative serum or urine pregnancy test within 7 days prior to enrollment and shall not be breastfeeding. Male patients must agree to use effective contraception throughout the study period and for 6 months after the end of study treatment.

   Version: 1.0, Version Date: March 18, 2026

8. Voluntarily participate in this study and provide written informed consent.

Exclusion Criteria:

1. Brain metastases with symptoms or symptom control duration less than 2 months;
2. History of or concurrent other malignant tumors within the past 3 years (excluding cured basal cell carcinoma of the skin and carcinoma in situ of the cervix);

3. Insufficient bone marrow hematopoietic function (without blood transfusion within 14 days):

   1. Absolute Neutrophil Count (ANC) < 1.5 × 10⁹/L;
   2. Platelet count < 100 × 10⁹/L;
   3. Hemoglobin < 90 g/L.

4. Hepatic abnormalities:

   1. Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST) or Alkaline Phosphatase (ALP) > 2.5 × Upper Limit of Normal (ULN) in patients without liver metastases; ALT, AST or ALP > 5 × ULN in patients with liver metastases;
   2. Serum total bilirubin > 1.5 × ULN (> 3 × ULN for patients with Gilbert's syndrome);
   3. Decompensated liver cirrhosis (Child-Pugh liver function grade B or C);
   4. Positive Hepatitis B Surface Antigen (HBsAg) with Hepatitis B Virus (HBV) DNA load ≥ 2000 IU/mL. Patients with positive HBsAg and HBV DNA load < 2000 IU/mL must receive anti-HBV therapy for at least 2 weeks prior to the first study drug administration;
   5. Positive Hepatitis C Virus (HCV) antibody with detectable HCV RNA.

5. Renal abnormalities:

   1. Serum creatinine > 1.5 × ULN or estimated creatinine clearance < 60 mL/min calculated by the Cockcroft-Gault formula;
   2. Urinalysis showing urine protein ≥ ++, confirmed with 24-hour urinary protein quantification > 1.0 g;
   3. Renal failure requiring hemodialysis or peritoneal dialysis;
   4. Medical history of nephrotic syndrome.

6. Bleeding risks:

   1. Abnormal coagulation function: Activated Partial Thromboplastin Time (APTT) or Thrombin Time (TT) > 1.5 × ULN, or International Normalized Ratio (INR) > 1.5 (> 2.5 for subjects receiving anticoagulant therapy);
   2. History of hemorrhage (hemoptysis), coagulopathy, or ongoing use of warfarin, aspirin, low-molecular-weight heparin and other antiplatelet drugs (except prophylactic aspirin at a dose ≤ 100 mg/day);
   3. Any signs or history of bleeding diathesis regardless of severity;
   4. Active gastrointestinal bleeding defined as hematemesis, hematochezia or melena within the past 3 months without evidence of resolution confirmed by gastroscopy or colonoscopy;
   5. Any Grade ≥ 3 bleeding event per CTCAE occurring within 4 weeks prior to the first study drug administration.

   Version: 1.0, Version Date: March 18, 2026

7. Cardiovascular and cerebrovascular abnormalities:

   1. Subjects with any of the following conditions within 12 months before the first study drug administration: grade ≥ II myocardial ischemia or myocardial infarction, arrhythmia, grade ≥ III cardiac insufficiency, uncontrolled angina, coronary/peripheral artery bypass graft surgery, symptomatic congestive heart failure, cerebrovascular accident or transient ischemic attack, etc.;
   2. Deep vein thrombosis or pulmonary embolism occurring within 6 months before the first study drug administration;
   3. Left Ventricular Ejection Fraction (LVEF) < 50% assessed by Doppler echocardiography;
   4. Average Fridericia-corrected QT interval (QTcF) (from at least 3 consecutive electrocardiograms): ≥ 450 ms for male patients, ≥ 470 ms for female patients;
   5. Uncontrolled hypertension refractory to medication (systolic blood pressure ≥ 150 mmHg and diastolic blood pressure ≥ 100 mmHg recorded in at least two measurements).

8. History of immunodeficiency:

   1. Confirmed Human Immunodeficiency Virus (HIV) infection;
   2. Other acquired or congenital immunodeficiency disorders;
   3. Scheduled or prior solid organ transplantation, hematopoietic stem cell transplantation within 60 days before the first study drug administration, or significant graft-versus-host disease;
   4. Patients requiring immunosuppressants, systemic or absorbable local hormonal therapy for immunosuppressive purposes that must be continued within 7 days before the first study drug administration (excluding daily glucocorticoid dose < 10 mg prednisone or equivalent steroids).
9. Active or uncontrolled severe infection (Grade ≥ 2 per CTCAE);
10. Uncontrolled pleural effusion, pericardial effusion or ascites requiring repeated drainage (judged by the investigator);
11. Prior treatment with any anti-PD-1, anti-PD-L1, anti-PD-L2 or anti-CTLA-4 antibody, or any other antibodies targeting T cell co-stimulatory or checkpoint pathways (e.g., OX40, CD137, etc.);
12. Complicated with severe or poorly controlled diseases judged by the investigator to carry substantial risks for study participation (e.g., poorly controlled diabetes with screening fasting plasma glucose (FPG) > 10 mmol/L);
13. Participation in another clinical trial of anti-tumor agents within 28 days prior to screening.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Conventional Therapy; Participants in this arm will receive standard first-line treatment for advanced esophageal squamous cell carcinoma, consisting of TP chemotherapy plus a PD-1 inhibitor. TP regimen refers to Nab-Paclitaxel combined with cisplatin.	Drug: Paclitaxel + Cisplatin (TP regimen) plus PD-1 inhibitor; Paclitaxel + Cisplatin (TP regimen) plus PD-1 inhibitor
Experimental: Experimental Arm; Subgroup B1 (TGF-β-guided Intervention): Patients with positive plasma TGF-β levels detected by ELISA; they will receive Retlirafusp alfa combined with chemo-immunotherapy backbone. Subgroup B2 (Metabolite-guided Intervention): Patients who do not meet the criteria for Subgroup B1 and have positive plasma metabolite predictive score; they will receive indole-3-carbinol plus fermented black garlic extract combined with chemo-immunotherapy backbone. Subgroup B3 (Lactobacillus-guided Intervention): Patients who do not meet the criteria for Subgroup B1 or B2 and have positive blood Lactobacillus levels measured by qPCR; they will receive Lactobacillus rhamnosus combined with chemo-immunotherapy backbone. Subgroup B4 (Screening Failure Subgroup): Patients with negative results for all three biomarkers due to technical issues; they will receive the same conventional treatment as Cohort A.	Drug: Retlirafusp alfa / Indole-3-carbinol + Black garlic fermentation extract / Lactobacillus rhamnosus / Placebo + Paclitaxel + Cisplatin (TP regimen) plus PD-1 inhibitor; Group B1 (TGF-guided intervention, n=73): Plasma TGF-B ELISA levels positive, combined with Retlirafusp alfa on top of chemo-immunotherapy backbone; Group B2 (metabolite-guided intervention, n=73): Did not meet TGF-β positivity, combined with indole-3-carbinol and black garlic fermentation extract on top of chemo-immunotherapy backbone; Group B3 (Lactobacillus-guided intervention, n=73): Those who don't meet B1 or B2 criteria but have positive blood Lactobacillus qPCR levels, combined with Lactobacillus rhamnosus on top of chemo-immunotherapy backbone; Group B4 (Screening failed group, n=55): All three biomarker tests are negative or testing failed due to technical reasons, receive the same conventional treatment as cohort A

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Progression-Free Survival (PFS)	Up to 2 Years

Secondary Outcome Measures

Outcome Measure	Time Frame
Duration of Response (DOR)	up to 2 years
Disease Control Rate (DCR)	up to 2 years
Overall Survival (OS)	up to 2 years
Objective Response Rate (ORR)	Up to 2 Years
quality of life score	up to 2 years
incidence and severity of adverse events (AEs)	up to 2 years
serious adverse events (SAEs)	up to 2 years

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Correlation analysis between TGFβ and Incidence of treatment response	TGFβ concentration is detected by plasma ELISA	up to 2 years
Correlation analysis between Metabolite Score and Incidence of treatment response	Metabolite Score is detected by plasma metabolome	up to 2 years
Correlation analysis between blood Lactobacillus qPCR levels and Incidence of treatment response		up to 2 years

Collaborators and Investigators

• Sponsor: Sun Yat-sen University

Study record dates

Study Major Dates

• Study Start (Estimated): July 7, 2026
• Primary Completion (Estimated): June 30, 2029
• Study Completion (Estimated): June 30, 2029

Study Registration Dates

• First Submitted: July 6, 2026
• First Submitted That Met QC Criteria: July 13, 2026
• First Posted (Actual): July 16, 2026

Study Record Updates

• Last Update Posted (Actual): July 16, 2026
• Last Update Submitted That Met QC Criteria: July 13, 2026
• Last Verified: July 1, 2026

More Information

Terms related to this study

• Keywords: Esophageal squamous cell carcinoma; TGF-β
• Additional Relevant MeSH Terms: Neoplasms by Site; Neoplasms; Neoplasms by Histologic Type; Gastrointestinal Neoplasms; Digestive System Neoplasms; Digestive System Diseases; Gastrointestinal Diseases; Head and Neck Neoplasms; Neoplasms, Glandular and Epithelial; Esophageal Diseases; Carcinoma; Neoplasms, Squamous Cell; Carcinoma, Squamous Cell; Esophageal Neoplasms; Esophageal Squamous Cell Carcinoma; Organic Chemicals; Hydrocarbons; Cycloparaffins; Hydrocarbons, Alicyclic; Hydrocarbons, Cyclic; Terpenes; Inorganic Chemicals; Chlorine Compounds; Nitrogen Compounds; Taxoids; Cyclodecanes; Diterpenes; Platinum Compounds; Paclitaxel; Cisplatin; indole-3-carbinol; TP protocol
• Other Study ID Numbers: SL-B2025-677-01

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: Study ProtocolStatistical Analysis Plan (SAP)Informed Consent Form (ICF)
• IPD Sharing Time Frame: The data can be shared when the study is finished and ready for publication.
• IPD Sharing Access Criteria: PI
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP; ICF

Drug and device information, study documents

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