A Study of Gentuximab + Paclitaxel in Patients With Advanced Gastric or Gastroesophageal Junction Cancer

May 19, 2026 updated by: Changchun GeneScience Pharmaceutical Co., Ltd.

An Multi-center, Open-label Phase Ib/II Study of Gentuximab Injection + Paclitaxel in Patients With Advanced Gastric or Gastroesophageal Junction Cancer to Evaluate Tolerability, Safety, Efficacy and Pharmacokinetics.

The objective of the study is to evaluate Tolerability, Safety, and primary Efficacy of Gentuximab Injection at different dosage in combination with Paclitaxel in Advanced Gastric or Gastroesophageal Junction Cancer patients, to ensure adequate treatment dosage for further study. Meanwhile, the study also evaluate Pharmacokinetics of Gentuximab Injection at different dosage in combination with Paclitaxel.

Study Overview

Status

Status

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

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

The study includes dose-limiting toxicity （DLT）observing period and randomization period with two cohorts as low-dose group（Gentuximab Injection 8mg/kg+ paclitaxel） and high-dose group（Gentuximab Injection 12mg/kg+ paclitaxel）. During the study，the anti-cancer efficacy, safety and anti-drug antibody were evaluated in all patients. DLT observation is only to subjects enrolled in DLT observation period and it lasts one treatment period. PK were doing in part of subjects.

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 (Actual)

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.
76

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
  • Phase 1

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 Contact Backup

Study Locations

  • China
      • Shanghai, China
        • Shanghai First People's Hospital
      • Shanghai, China
        • Shanghai East Hospital
    • Fujian
      • Fuzhou, Fujian, China
        • Fujian Tumor Hospital
    • Guangdong
      • Guangzhou, Guangdong, China
        • The Sixth Hospital of Sun Yat-sen University
    • Heilongjiang
      • Harbin, Heilongjiang, China
        • The Affiliated Tumor Hospital of Harbin Medical University
    • Henan
      • Zhengzhou, Henan, China
        • The First Affiliated Hospital of Zhengzhou University
    • Hubei
      • Wuhan, Hubei, China
        • Union Hospital of Tongji Medical College, Huazhong University of Science and Technology
    • Jiangsu
      • Nanjing, Jiangsu, China
        • Jiangsu Province Hospital
    • Jilin
      • Changchun, Jilin, China
        • The First Hospital of Jilin University
    • Zhejiang
      • Hangzhou, Zhejiang, China
        • The first Affiliated Hospital, Zhejiang University School of Medicine
      • Hangzhou, Zhejiang, China
        • Sir Run Run Shaw Hospital, Zhejiang University School of Medicine
      • Hangzhou, Zhejiang, China
        • Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology

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

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • The subject can understand the process and methods of the study, complete the study in accordance with the protocol and is willing to sign a written informed consent.
  • Male or female. aged between 18 and 75 years
  • Histopathologically confirmed advanced advanced gastric or gastroesophageal junction cancer, and Documented progression during first-line fluoropyrimidine- and platinum- containing chemotherapy, or during the 3 months following the last cycle of such chemotherapy (or during the 6 months following the last dose of adjuvant therapy or new adjuvant therapy containing fluoropyrimidine and platinium).
  • At least one Measurable lesion.
  • ECOG Performance status (PS) score, 0-1 level.
  • A life expectancy of >3 months.
  • Adequate hematologic function, as defined by: Absolute neutrophil count (ANC) ≥1.5×109/L; hemoglobin concentration ≥90g/L (allowing blood transfusion); and platelet count ≥80×109/L.
  • Adequate hepatic function, as defined by: ALT ≤ 2.5 × ULN, AST ≤ 2.5 × ULN, TBIL ≤ 1.5 × ULN (liver metastases patients ALT ≤ 5 × ULN, AST ≤ 5 × ULN, TBIL ≤ 3 × ULN).
  • Adequate renal function, as defined by: serum creatinine level≤ 1.5 × ULN, or creatinine clearance ≥ 50ml / min when serum creatinine level> 1.5 × ULN.
  • Adequate coagulation function, as defined by: International normalized ratio (INR) ≤1.5× ULN, activated partial thromboplastin time (aPTT) ≤1.5 x ULN.
  • 24-hour urine protein quantitation is <1g（24-hour urine protein quantitative test should be performed when urine protein ≥1+ is found during screening visit）.
  • Subjects (male and female) who have fertility must agree to use reliable contraceptive methods during the trial and in 3 months after the last administration. Female subjects in childbearing age must be negative for blood pregnancy test prior to enrollment.

Exclusion Criteria:

  • Previously administrated with anti-angiogenic drugs or paclitaxel.
  • Systematic anti-tumor therapy (non-anti-angiogenic drugs or paclitaxel) such as chemotherapy, radiotherapy, macromolecular targeted therapy, immunotherapy, endocrine therapy, etc. within 4 weeks before the first dose of investigational drug, except for the following: nitrourea or mitomycin C is within 6 weeks before the first dose, oral fluorouracil and small molecule targeted drugs are within 2 weeks or 5 half-life of the drug(whichever is longer) before the first dose，Chinese medicine with anti-cancer indications is within 2 weeks before the first dose.
  • Has participated in a clinical study of a non-approved experimental agent within 4 weeks prior to screening visit.
  • Has undergone major surgery within 4 weeks before screening visit (not including needle biopsy)， or would undergo planned surgery during the study.
  • Subject with positive HCV-Ab, Anti-HIV or TP-Ab, or positive HBS-Ag with copies of HBV DNA > ULN.
  • Patients with previously confirmed malignant tumors.
  • History of arterial thrombosis or deep vein thrombosis within 6 months prior to screening, or a bleeding event no less than Grade level 3 within 2 months prior to screening， or the investigator determines that there is a risk of bleeding.
  • History of severe cardiovascular and cerebrovascular diseases.
  • Subjects with confirmed brain tumor metastases，but subjects in steady situation can be enrolled.
  • Active bleeding confirmed by gastroscopy when fecal occult blood positive (only subjects with primary lesions not removed need to do fecal occult blood test.
  • History of abdominal fistula, gastrointestinal perforation, or intra-abdominal abscess within 12 months before screening visit.
  • Thoracic，abdominal or pericardial effusion that cannot be controlled by repeated drainage or with obvious symptoms.
  • Has a nonhealing wound, serious ulcer, or unrecovered bone fracture.
  • Active infections requiring systemic treatment, including but not limited to active tuberculosis.
  • Using anticoagulation and antiplatelet drugs.
  • Female subjects who is pregnant (confirmed by urine or serum pregnancy test) or lactating.
  • Has a known serious allergy reaction to recombination monoclonal antibody (MAb) drug, ,or infusion reaction.
  • Has known alcohol or drug dependency.

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: 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: 1 Gentuximab+ Paclitaxel
8 mg/kg Gentuximab administered intravenously (IV) on D1 and D15（28 days every cycle）+ 80 mg/m² paclitaxel administered IV on D1, D8 and D15
Drug: Gentuximab
Administered intravenously (IV)
Drug: Paclitaxel
Administered intravenously (IV)
Experimental: 2 Gentuximab+ Paclitaxel
12 mg/kg Gentuximab administered intravenously (IV) on D1 and D15（28 days every cycle）+ 80 mg/m² paclitaxel administered IV on D1, D8 and D15
Drug: Gentuximab
Administered intravenously (IV)
Drug: Paclitaxel
Administered intravenously (IV)

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
Dose-limiting toxicities (DLT)
Time Frame: Up to 4 Weeks
Number of Participants With One or More Drug-Related Adverse Events (AEs) defined as DLT in the protocol
Up to 4 Weeks
AEs or SAEs
Time Frame: Baseline through Study Completion, about 24 weeks
Drug-Related Adverse Events (AEs) or Any Serious Adverse Events (SAEs)
Baseline through Study Completion, about 24 weeks

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
Objective response rate（ORR）
Time Frame: Up to 6 cycles (28 days for every cycle)
Proportion of Participants With CR and PR
Up to 6 cycles (28 days for every cycle)
Progression-free survival (PFS)
Time Frame: Up to 6 cycles (28 days for every cycle)
The time from randomization to the patient tumor progression or death.
Up to 6 cycles (28 days for every cycle)
Disease control rate (DCR)
Time Frame: Up to 6 cycles (28 days for every cycle)
Proportion of Participants With CR, PR and SD
Up to 6 cycles (28 days for every cycle)
Time-to-progress (TTP)
Time Frame: Up to 6 cycles (28 days for every cycle)
The time from randomization to the patient tumor progression.
Up to 6 cycles (28 days for every cycle)
Time-to-failure (TTF)
Time Frame: Up to 6 cycles (28 days for every cycle)
The time from randomization to the patient withdraw from the study.
Up to 6 cycles (28 days for every cycle)
Anti-drug antibody
Time Frame: Up to 6 cycles (28 days for every cycle)
Number of Participants With Anti-drug Antibodies
Up to 6 cycles (28 days for every cycle)
Pharmacokinetics Cmax
Time Frame: Cycle 1(day1-day 15)& Cycle 2(day 15-day26) & Cycle 3(day 1) (28 days for every cycle)
Maximum Concentration (Cmax)
Cycle 1(day1-day 15)& Cycle 2(day 15-day26) & Cycle 3(day 1) (28 days for every cycle)
Area Under the Concentration-Time Curve (AUC)
Time Frame: Cycle 1(day1-day 15)& Cycle 2(day 15-day26) & Cycle 3(day 1) Cycle 1(day1-day 15)& Cycle 2(day 15-day26) & Cycle 3(day 1) （28 days for every cycle）
Cycle 1(day1-day 15)& Cycle 2(day 15-day26) & Cycle 3(day 1) Cycle 1(day1-day 15)& Cycle 2(day 15-day26) & Cycle 3(day 1) （28 days for every cycle）

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.
Changchun GeneScience Pharmaceutical Co., Ltd.

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
The First Affiliated Hospital with Nanjing Medical University
Fujian Cancer Hospital
Tongji Hospital
The First Affiliated Hospital of Zhengzhou University
The First Hospital of Jilin University
Sixth Affiliated Hospital, Sun Yat-sen University
Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine
Shanghai East Hospital
Zhejiang University
Sir Run Run Shaw Hospital
The Second Affiliated Hospital of Harbin Medical University
Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

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.
November 5, 2019

Primary Completion (Actual)

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.
June 1, 2020

Study Completion (Actual)

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.
September 20, 2020

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).
July 27, 2019

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.
August 9, 2019

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.
August 12, 2019

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.
May 22, 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.
May 19, 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.
May 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.
  • GenSci 043 CT

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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