Efficacy and Safety of QL1706 Combined With Nab-paclitaxel and Cisplatin as 1st Line Therapy for Advanced or Metastatic Esophageal Squamous Cell Carcinoma

A Single-arm Clinical Study of QL1706 (Anti PD-1 and CTLA-4 Antibody) in Combination With Nab-paclitaxel and Cisplatin as First-line Therapy in Patients With Advanced or Metastatic Esophageal Squamous Cell Carcinoma

The purpose of this study is to assess the efficacy and safety of QL1706 combined with nab-paclitaxel and cisplatin in first-line therapy for patients with advanced or metastatic esophageal squamous cell carcinoma. QL1706 is a anti-PD-1 and anti-CTLA4 antibody.

Study Overview

• Status: Not yet recruiting
• Conditions: ESCC; First-line Therapy; QL1706
• Intervention / Treatment: Drug: QL1706 plus nab-paclitaxel and cisplatin

• Study Type: Interventional
• Enrollment (Estimated): 50
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Shegan Gao Professor Gao; Phone Number: +86 0379-64830815; Email: gsg112258@163.com

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

• Subjects participate voluntarily and sign informed consent.
• 18-75 years, male or female.
• Histologically confirmed Unresectable Advanced or metastatic Esophageal Squamous Cell Carcinomas
• No previous systemic anti-tumor treatment for unresectable locally advanced or metastatic esophageal squamous cell carcinoma has been received
• At least 1 measurable target lesion and/or unmeasurable target lesion according to Response Evaluation in Solid Tumors (RECIST 1.1).
• ECOG PS 0-1
• Expected survival ≥ 12 weeks
• Adequate organ function (without blood transfusion or growth factors within 14 days prior to first dose), including: ANC ≥ 1.5 × 10⁹/L; Platelets ≥ 100 × 10⁹/L; Hemoglobin ≥ 90 g/L; Serum albumin ≥ 30 g/L; Total bilirubin ≤ 1.5 × ULN; ALT/AST ≤ 2.5 × ULN (≤ 5 × ULN if with liver or bone metastases); ALP ≤ 2.5 × ULN; Serum creatinine ≤ 1.5 × ULN; INR ≤ 1.5 (if not on anticoagulation);
• Non-sterilized women of childbearing potential and male participants with such partners must agree to use medically approved contraception during and for 3 months after study drug administration. Women must test negative for serum or urine HCG within 7 days prior to first dose and not be breastfeeding

Exclusion Criteria:

• Have received anti-PD-1 or anti-PD-L1 antibody therapy;
• BMI < 18.5 kg/m2 or weight loss ≥ 10% within 2 months before screening (at the same time, the effect of a large amount of pleural effusions and ascites on bogy weight should be considered);
• Presence of any active autoimmune disease or history of autoimmune disease (such as: Autoimmune hepatitis, interstitial pneumonia, uveitis, enteritis, hypophysitis, nephritis, hyperthyroidism)
• Those who are taking immunosuppressants or systemic hormonal therapy for immunosuppressive purposes (dose> 10 mg/day prednisone or other equivalent cortiremonial hormones)
• Severe allergic reaction to other monoclonal antibodies
• Known history or evidence of interstitial lung disease or active non-infectious pneumonia
• Known central nervous system metastases
• History of other malignancies within the past 5 years or concurrent malignancies (except for cured basal cell carcinoma of the skin and carcinoma in situ of the cervix).
• Uncontrolled cardiac clinical symptoms or diseases, such as: (1) NYHA class II or higher heart failure (2) unstable angina (3) myocardial infarction within the past year (4) clinically significant supraventricular or ventricular arrhythmias requiring treatment or intervention (5) QTc > 450 ms (male); QTc > 470 ms (female)
• Tumor invasion of major blood vessels, or based on imaging, the investigator determines a high likelihood of tumor invasion of major blood vessels during the study period, which may lead to fatal bleeding, such as imaging evidence of >90-degree encasement of major vessels or tumor cavitation
• Patients with pleural effusion, ascites, or pericardial effusion requiring drainage; if the symptoms are stable after drainage as assessed by the investigator, enrollment is possible. Gastrointestinal fistula, gastrointestinal perforation, or intra-abdominal abscess within 6 months prior to the start of study treatment.
• Major surgical procedures within 4 weeks prior to the start of study treatment (diagnostic procedures excluded) or anticipated need for major surgery during the study period.
• Active infection, unexplained fever ≥38.5°C within 7 days prior to drug administration, or baseline white blood cell count >15×109/L.
• Congenital or acquired immunodeficiency (e.g., HIV infection); hepatitis B surface antigen (HBsAg) positive with hepatitis B virus deoxyribonucleic acid (HBV DNA) ≥2000 IU/ml, or positive for hepatitis C virus antibody.
• Live vaccine administration within 4 weeks prior to study drug administration or during the study period.
• As judged by the investigator, other factors that may affect study outcomes or lead to premature termination of the study, such as alcoholism, drug abuse, other serious diseases (including psychiatric disorders) requiring concurrent treatment, significant laboratory abnormalities, or family or social factors that may impact patient safety.

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: QL1706 plus nab-paclitaxel and cisplatin

Drug: QL1706 plus nab-paclitaxel and cisplatin; QL1706 will be administrated at a dose of 5 mg/kg intravenously (IV), every 3 weeks, until progressive disease or intolerable or other reasons according to the criteria for termination of treatment). QL1706 will be administrated up to 2 year. Nab-paclitaxel will be administrated at a dose of 125mg/m2 intravenously (IV), d1,d8, every 3 weeks for 6 cycles at most. Cisplatin will be administrated at a dose of 75mg/m2 intravenously (IV), every 3 weeks for 6 cycles at most.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
ORR	ORR is defined as the percentage of participants with Complete Response or Partial Response per RECIST 1.1 assessed by the investigators.	From the date of first dose to achieving complete response or partial response, assessed up to 42 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
PFS	PFS is defined as the time from the first administration to the first documented progressive disease (PD) per RECIST 1.1 by investigators or death due to any cause, whichever occurs first	From the date of first dose to the date of first documented progression or death from any cause, whichever occurs first, assessed up to 42 months.
OS	OS is defined as the time from the first administration to death due to any cause	From the date of first dose to the date of death due to any cause, assessed up to 48months.
DOR	DOR is defined for participants who demonstrate a confirmed CR or PR, per RECIST 1.1 by the investigators	From the date of first documented evidence of CR or PR to the date of PD or death, assessed up to 42 months.
number of participants with AEs	An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention.	From first dose to the later of 90 days after the last dose of QL1706 or 30 days after the last dose of nab-paclitaxel or cisplatin, assessed up to 48 months.

Collaborators and Investigators

• Sponsor: The First Affiliated Hospital of Henan University of Science and Technology

Study record dates

Study Major Dates

• Study Start (Estimated): May 1, 2026
• Primary Completion (Estimated): June 30, 2028
• Study Completion (Estimated): June 30, 2029

Study Registration Dates

• First Submitted: March 3, 2026
• First Submitted That Met QC Criteria: April 14, 2026
• First Posted (Actual): April 16, 2026

Study Record Updates

• Last Update Posted (Actual): April 16, 2026
• Last Update Submitted That Met QC Criteria: April 14, 2026
• Last Verified: October 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Inorganic Chemicals; Chlorine Compounds; Nitrogen Compounds; Platinum Compounds; Cisplatin; 130-nm albumin-bound paclitaxel
• Other Study ID Numbers: QL-ESCC-QIBA-1002

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

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