KC1036 in Combination With PD-1 Antibody and Platinum-based Chemotherapy for First-line Advanced Esophageal Cancer

March 18, 2026 updated by: Beijing Konruns Pharmaceutical Co., Ltd.

A Phase II Clinical Study to Evaluate the Efficacy and Safety of KC1036 Combined With PD-1 Antibody and Platinum-based Chemotherapy as First-line Treatment for Advanced Recurrent or Metastatic Esophageal Squamous Cell Carcinoma

The purpose of this study is to evaluate the efficacy and safety of KC1036 in combination with PD-1 antibody and platinum-based chemotherapy as a first-line treatment for patients with unresectable locally advanced, recurrent, or metastatic esophageal squamous cell carcinoma (ESCC).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This multicenter Phase II study evaluates KC1036 in combination with PD-1 antibody and platinum-based chemotherapy as first-line treatment for advanced esophageal squamous cell carcinoma. The trial comprises a Phase IIa dose-escalation and expansion phase to assess the safety of KC1036 at 20, 30, or 40 mg QD, followed by a Phase IIb randomized evaluation of 2-3 cohorts (up to 50 subjects per arm) to identify the recommended Phase III dose. Subjects receive daily oral KC1036 plus toripalimab, paclitaxel, and cisplatin every 3 weeks until confirmed disease progression assessed by the RECIST V1.1 standard, death, intolerable toxicity, initiation of a new anti-tumor therapy, other reasons leading to treatment discontinuation as specified by protocol.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
60

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
      • Beijing, China, 100021
        • Recruiting
        • Cancer Hospital, Chinese Academy of Medical Sciences
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Males or females aged 18 to 75 years;
  • Histologically or cytologically confirmed esophageal or esophageal-gastric junction squamous cell carcinoma;
  • Patients who have not received prior systemic anti-tumor therapy for the current recurrent or metastatic disease;
  • At least one measurable tumor lesion according to RECIST 1.1;
  • Eastern Cooperative Oncology Group performance status score of 0 or 1;
  • Life expectancy > 12 weeks;
  • BMI≥16.0 kg/m2;
  • Adequate bone marrow, renal, and hepatic function;
  • Female patients of childbearing potential with a negative blood pregnancy test completed within 7 days before the first dose;
  • Patients should participate in the study voluntarily and sign informed consent.

Exclusion Criteria:

  • Symptomatic, untreated, or actively progressing central nervous system (CNS) metastasis;
  • Other malignancies within the past 5 years;
  • Known hypersensitivity to any monoclonal antibodies or chemotherapy components;
  • Gastrointestinal abnormalities;
  • High risk of bleeding or fistula due to tumor invasion of adjacent organs, or existing esophageal/tracheal fistula;
  • Cardiovascular and cerebrovascular diseases;
  • Prior therapy with anti-angiogenic drugs or immunotherapy; Systemic therapy, investigational drugs, or live vaccines within 4 weeks prior to the first dose; Palliative radiotherapy within 2 weeks or major surgery within 28 days prior to enrollment;
  • Uncontrolled pleural effusion, pericardial effusion, or ascites requiring repeated drainage;
  • Presence of unresolved toxicities from prior anti-tumor therapy, defined as having not resolved to NCI CTCAE 5.0 Grade 0 or 1;
  • Active autoimmune disease or a history of autoimmune disease requiring systemic treatment;
  • Active infections, including severe infection (CTCAE > Grade 2) within 4 weeks, active tuberculosis, or positive status for HIV, HBV, or HCV;
  • Pregnant or lactating women;
  • Female subjects of child-bearing potential and male subjects of reproductive capacity who do not agree to use contraceptive measures during the study and for 6 months after the end of the study;
  • Other conditions assessed by the investigator that would increase safety risks or interfere with the study results.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Phase IIa (Dose Escalation and Expansion)
This is a multicenter, single-arm, dose-escalation and expansion phase. Subjects will receive KC1036 at one of three dose levels (20 mg QD, 30 mg QD, or 40 mg QD) in combination with fixed doses of Toripalimab and platinum-based chemotherapy (Paclitaxel and Cisplatin).
Drug: KC1036
Dosage: 20 mg, 30 mg, or 40 mg; Route: Oral; Frequency: Once daily (QD) under fasting conditions (at least 2 hours before and 1 hour after dosing), 21 days as a cycle.
Drug: Toripalimab
Dosage: 240 mg; Route: Intravenous (IV) infusion; Frequency: Every 3 weeks (Q3W) on Day 1 of each 21-day cycle, for up to 2 years.
Drug: Paclitaxel
Dosage: 175 mg/m2; Route: IV infusion; Frequency: Day 1 of each 21-day cycle, for a maximum of 6 cycles.
Drug: Cisplatin
Dosage: 60-75 mg/m2; Route: IV infusion; Frequency: Day 1 of each 21-day cycle, for a maximum of 6 cycles.
Drug: KC1036
Dosage: Selected doses from Phase IIa (20 mg, 30 mg, or 40 mg); Route: Oral; Frequency: Once daily (QD) under fasting conditions, 21 days as a cycle.
Experimental: Phase IIb (Randomized Expansion)
This is a multicenter, randomized, parallel-group, open-label phase. Based on Phase IIa results, 2-3 dose cohorts will be selected. Subjects will be randomized (1:1 or 1:1:1) to receive the assigned dose of KC1036 in combination with Toripalimab and platinum-based chemotherapy.
Drug: KC1036
Dosage: 20 mg, 30 mg, or 40 mg; Route: Oral; Frequency: Once daily (QD) under fasting conditions (at least 2 hours before and 1 hour after dosing), 21 days as a cycle.
Drug: Toripalimab
Dosage: 240 mg; Route: Intravenous (IV) infusion; Frequency: Every 3 weeks (Q3W) on Day 1 of each 21-day cycle, for up to 2 years.
Drug: Paclitaxel
Dosage: 175 mg/m2; Route: IV infusion; Frequency: Day 1 of each 21-day cycle, for a maximum of 6 cycles.
Drug: Cisplatin
Dosage: 60-75 mg/m2; Route: IV infusion; Frequency: Day 1 of each 21-day cycle, for a maximum of 6 cycles.
Drug: KC1036
Dosage: Selected doses from Phase IIa (20 mg, 30 mg, or 40 mg); Route: Oral; Frequency: Once daily (QD) under fasting conditions, 21 days as a cycle.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Objective Response Rate (ORR)
Time Frame: Baseline to study completion (approximately 24 months)
ORR is defined as the proportions of patients with a complete response (CR) or partial response (PR) according to RECIST 1.1.
Baseline to study completion (approximately 24 months)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Disease Control Rate (DCR)
Time Frame: Baseline to study completion (approximately 24 months)
DCR is defined as the percentage of participants with a best overall complete response (CR), partial response (PR), or stable disease (SD) according to RECIST 1.1.
Baseline to study completion (approximately 24 months)
Progression-free survival (PFS)
Time Frame: Baseline to study completion (approximately 24 months)
PFS is defined as the time from the first study drug administration to the date of the first documented progressive disease (PD) according to RECIST 1.1 or death.
Baseline to study completion (approximately 24 months)
Duration of Response (DOR)
Time Frame: Baseline to study completion (approximately 24 months).
DOR is defined as the time from first documented objective response (complete response (CR)or partial response (PR)) to the date of first documented disease progression (PD) or death.
Baseline to study completion (approximately 24 months).
TTR
Time Frame: Baseline to study completion (approximately 24 months)
TTR is defined as the time from the start of the first study drug administration to the date of the first documented response of complete response (CR) or partial response (PR) according to RECIST 1.1.
Baseline to study completion (approximately 24 months)
Adverse events (AEs)
Time Frame: Baseline to 30 days after the last dose of study treatment
Assessed by treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs) during the treatment assessed by NCI CTCAE 5.0.
Baseline to 30 days after the last dose of study treatment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Beijing Konruns Pharmaceutical Co., Ltd.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 12, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 14, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 15, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 18, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 20, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 18, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • KC1036-COM-01

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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