A Phase Ⅲ Clinical Study of HLX22 in Combination With Trastuzumab and Chemotherapy for the Treatment of Gastroesophageal Junction and Gastric Cancer

NCT ID: NCT06532006

Last Updated: 2025-08-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

550 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-11-22

Study Completion Date

2028-09-01

Brief Summary

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This is a double-blind, randomized, multiregion, comparative phase Ⅲ clinical study designed to evaluate the efficacy and safety of HLX22 in combination with trastuzumab and chemotherapy as first-line treatment in patients with HER2-positive locally advanced/metastatic adenocarcinoma of the gastric and/or gastroesophageal junction (G/GEJ).Eligible subjects will be randomized to the two groups based on a 1:1 ratio. Enrolled subjects shall be treated with the study drug until the loss of clinical benefit, death, intolerable toxicity, withdrawal of informed consent, or other reasons specified by the protocol (whichever occurs first).

Detailed Description

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In experimental group: HLX22 (15 mg/kg) + trastuzumab + chemotherapy (XELOX) ± placebo (for pembrolizumab), once every 3 weeks (Q3W).

In control group: Placebo (for HLX22) + trastuzumab + chemotherapy (XELOX) ± pembrolizumab, Q3W.

Conditions

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Gastroesophageal-junction Cancer Monoclonal Antibody Gastric Cancer HER2-positive Gastric Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Experimental group

Experimental group: HLX22 (15 mg/kg) + trastuzumab + chemotherapy (XELOX) ± placebo (for pembrolizumab), Q3W

Subjects in the experimental group may use one of the treatments below:

HLX22 (15 mg/kg) + trastuzumab + chemotherapy (XELOX) or HLX22 (15 mg/kg) + trastuzumab + chemotherapy (XELOX) + placebo (for pembrolizumab)

Group Type EXPERIMENTAL

HLX22

Intervention Type DRUG

HLX22 15mg/kg Q3w

Trastuzumab

Intervention Type DRUG

Trastuzumab 8 mg/kg loading dose and then 6 mg/kg maintenance thereafter ,Q3W

Oxaliplatin

Intervention Type DRUG

Oxaliplatin 130 mg/m2 ,Q3W

Capecitabine

Intervention Type DRUG

Capecitabine 1000 mg/m2 bid on Days 1-14 ,Q3W

Control group

Control group: Placebo (for HLX22) + trastuzumab + chemotherapy (XELOX) ± pembrolizumab, Q3W

Subjects in the control group may use one of the treatments below:

Placebo (for HLX22) + trastuzumab + chemotherapy (XELOX) or Placebo (for HLX22) + trastuzumab + chemotherapy (XELOX) + pembrolizumab

Group Type ACTIVE_COMPARATOR

Pembrolizumab

Intervention Type DRUG

Pembrolizumab 200mg q3w

Trastuzumab

Intervention Type DRUG

Trastuzumab 8 mg/kg loading dose and then 6 mg/kg maintenance thereafter ,Q3W

Oxaliplatin

Intervention Type DRUG

Oxaliplatin 130 mg/m2 ,Q3W

Capecitabine

Intervention Type DRUG

Capecitabine 1000 mg/m2 bid on Days 1-14 ,Q3W

Interventions

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HLX22

HLX22 15mg/kg Q3w

Intervention Type DRUG

Pembrolizumab

Pembrolizumab 200mg q3w

Intervention Type DRUG

Trastuzumab

Trastuzumab 8 mg/kg loading dose and then 6 mg/kg maintenance thereafter ,Q3W

Intervention Type DRUG

Oxaliplatin

Oxaliplatin 130 mg/m2 ,Q3W

Intervention Type DRUG

Capecitabine

Capecitabine 1000 mg/m2 bid on Days 1-14 ,Q3W

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Male/female who are at least 18 years of age on the day of signing the informed consent.
2. With histologically or cytologically confirmed diagnosis of previously untreated, locally advanced unresectable or metastatic HER2-positive gastric or gastroesophageal junction adenocarcinoma.
3. Had measurable disease as assessed by IRRC according to the RECIST v1.1, the target lesion must not be a bone metastatic lesion only.
4. HER2-positive tumor defined as either IHC 3+ or IHC 2+ in combination with ISH+ or FISH, as assessed by a central laboratory on a primary or metastatic tumor.
5. ECOG PS within 7 days before randomization: 0-1.
6. Expected survival ≥ 6 months.
7. Had adequate organ function

Exclusion Criteria

1. Patients with other malignant tumors within 2 years before the randomization.
2. Evidence of disease progression within 6 months (before randomization) after completion of prior neoadjuvant or adjuvant chemotherapy (or both) or radiotherapy for gastric adenocarcinoma or gastroesophageal junction adenocarcinoma.
3. Previous treatment with any HER2-target therapy.
4. Active gastrointestinal bleeding
5. Presence of central nervous system (CNS) metastases.
6. Left ventricular ejection fraction (LVEF) \< 55%.
7. Subjects who had known history of severe allergy to any monoclonal antibody or any component of study treatment.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Henlius USA

UNKNOWN

Sponsor Role collaborator

Shanghai Henlius Biotech

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Los Angeles Cancer Network

Anaheim, California, United States

Site Status RECRUITING

OPN - Oncology Physician Network (Los Alamitos)

Los Alamitos, California, United States

Site Status RECRUITING

Banner MD Anderson Cancer Center

Greeley, Colorado, United States

Site Status RECRUITING

Advanced Research LLC

Deerfield Beach, Florida, United States

Site Status RECRUITING

Florida Cancer Specialist - South

Fort Myers, Florida, United States

Site Status RECRUITING

BRCR Medical Center

Plantation, Florida, United States

Site Status RECRUITING

Napa Research

Pompano Beach, Florida, United States

Site Status RECRUITING

Florida Cancer Specialist - North

St. Petersburg, Florida, United States

Site Status RECRUITING

Florida Cancer Specialist - East

West Palm Beach, Florida, United States

Site Status RECRUITING

Northwestern University

Chicago, Illinois, United States

Site Status RECRUITING

Mission Cancer + Blood (Exigent Network)

Des Moines, Iowa, United States

Site Status RECRUITING

Holden Comprehensive Cancer Center - University of Iowa

Iowa City, Iowa, United States

Site Status RECRUITING

Washington University School of Medicine St. Louis

St Louis, Missouri, United States

Site Status RECRUITING

Nebraska Cancer Specialists

Omaha, Nebraska, United States

Site Status RECRUITING

Comprehensive Cancer Centers Nevada

Las Vegas, Nevada, United States

Site Status RECRUITING

Cleveland Clinic

Cleveland, Ohio, United States

Site Status RECRUITING

UPMC Hillman Cancer Center

Pittsburgh, Pennsylvania, United States

Site Status RECRUITING

Guthrie Medical Group, PC and Robert Packer Hospital (Guthrie Cancer Center - Sayre)

Sayre, Pennsylvania, United States

Site Status RECRUITING

Vanderbilt University Medical Center

Nashville, Tennessee, United States

Site Status RECRUITING

Texas Oncology - West (SCRI)

Abilene, Texas, United States

Site Status RECRUITING

Texas Oncology Central South (SCRI)

Austin, Texas, United States

Site Status RECRUITING

The University of Texas MD Anderson cancer Center

Houston, Texas, United States

Site Status RECRUITING

Texas Oncology - Gulf Coast (SCRI)

Webster, Texas, United States

Site Status RECRUITING

American Oncology Network Vista Oncology Division

Olympia, Washington, United States

Site Status RECRUITING

Northwest Medical Specialties

Tacoma, Washington, United States

Site Status RECRUITING

West Virginia University Cancer Institute

Morgantown, West Virginia, United States

Site Status RECRUITING

St. Vincent Hospital Melbourne

Fitzroy, Melbourne, Australia

Site Status RECRUITING

Peninsula Health-Frankston hospital

Frankston, Melbourne, Australia

Site Status RECRUITING

University of the Sunshine Coast Clinical Trials, Sunshine Coast Haematology and Oncology Clinic

Sunshine Coast, Queensland, Australia

Site Status RECRUITING

GenesisCare Research

Campbelltown, Sydney, Australia

Site Status RECRUITING

Central Coast Local Health District (Gosford and Wyong Hospital)

Gosford, Sydney, Australia

Site Status RECRUITING

Macquarie University

North Ryde, Sydney, Australia

Site Status RECRUITING

Concord Repatriation General Hospital

Concord, , Australia

Site Status RECRUITING

Centro de Oncologia de Precision

Santiago, Santiago Metropolitan, Chile

Site Status RECRUITING

Instituto del Cancer RedSalud Vitacura

Santiago, Santiago Metropolitan, Chile

Site Status RECRUITING

Beijing Cancer Hospital

Beijing, Beijing Municipality, China

Site Status RECRUITING

The Fourth Hospital of Hebei Medical University

Shijiazhuang, Hebei, China

Site Status RECRUITING

Affiliated Hospital of Youjiang Medical University for Nationalities

Baise City, , China

Site Status RECRUITING

Cancer Hospital Chinese Academy of Medical Sciences

Beijing, , China

Site Status RECRUITING

Peking Union Medical College Hospital

Beijing, , China

Site Status RECRUITING

The First Affiliated Hospital of Bengbu Medical University

Bengbu, , China

Site Status RECRUITING

The First Hospital of Jilin University

Changchun, , China

Site Status RECRUITING

Hunan Cancer Hospital

Changsha, , China

Site Status RECRUITING

Heping Hospital Affiliated to Changzhi Medical College

Changzhi, , China

Site Status RECRUITING

Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital

Chengdu, , China

Site Status RECRUITING

West China Hospital of Sichuan University

Chengdu, , China

Site Status RECRUITING

The First Affiliated Hospital of Chongqing Medical University

Chongqing, , China

Site Status RECRUITING

Fujian Cancer Hospital

Fuzhou, , China

Site Status RECRUITING

Zhongshan City People's Hospital

Guangdong, , China

Site Status RECRUITING

The Sixth Affiliated Hospital of Sun Yat-sen University

Guangzhou, , China

Site Status RECRUITING

Sir Run Run Shaw Hospital (SRRSH), affiliated with the Zhejiang University School of Medicine

Hangzhou, , China

Site Status RECRUITING

The First Affiliated Hospital, Zhejiang University School of Medic

Hangzhou, , China

Site Status RECRUITING

Harbin Medical University Cancer Hospital

Harbin, , China

Site Status RECRUITING

The First Affiliated Hospital of Anhui Medical University

Hefei, , China

Site Status RECRUITING

The Second Hospital of Anhui Medical University

Hefei, , China

Site Status RECRUITING

Cancer Hospital of Shandong First Medical University

Jinan, , China

Site Status RECRUITING

Gansu Provincial Cancer Hospital

Lanzhou, , China

Site Status RECRUITING

Gansu Provincial Hospital

Lanzhou, , China

Site Status RECRUITING

The First Hospital Of Lanzhou University

Lanzhou, , China

Site Status RECRUITING

Liuzhou Workers' Hospital

Liuzhou, , China

Site Status RECRUITING

The First Affiliated Hospital of Henan University of Science

Luoyang, , China

Site Status RECRUITING

Mianyang Central Hospital

Mianyang, , China

Site Status RECRUITING

The First Affiliated Hospital of Nanchang University

Nanchang, , China

Site Status RECRUITING

Nanjing Drum Tower Hospital

Nanjing, , China

Site Status RECRUITING

The Affiliated Hospital of Qingdao University

Qingdao, , China

Site Status RECRUITING

Renji Hospital,Shanghai Jiao Tong University School of Medicine

Shanghai, , China

Site Status RECRUITING

The Central Hospital of Shaoyang

Shaoyang, , China

Site Status RECRUITING

Liaoning Medical University Cancer Institute & Hospital

Shenyang, , China

Site Status RECRUITING

Shanxi Cancer Hospital

Taiyuan, , China

Site Status RECRUITING

Tianjin Medical University Cancer Institute & Hospital

Tianjin, , China

Site Status RECRUITING

Cancer Hospital Affiliated to Xinjiang Medical University

Ürümqi, , China

Site Status RECRUITING

The First Affiliated Hospital of Xiamen University

Xiamen, , China

Site Status RECRUITING

Qinghai University Affiliated Hospital

Xining, , China

Site Status RECRUITING

Xuzhou Central Hospital

Xuzhou, , China

Site Status RECRUITING

Yichang Central People's Hospital

Yichang, , China

Site Status RECRUITING

General Hospital of Ningxia Medical University

Yinchuan, , China

Site Status RECRUITING

Henan Cancer Hospital

Zhengzhou, , China

Site Status RECRUITING

The First Affiliated Hospital of Zhengzhou University

Zhengzhou, , China

Site Status RECRUITING

LLC Todua Clinic

Tbilisi, , Georgia

Site Status RECRUITING

Ltd "New Hospitals"

Tbilisi, , Georgia

Site Status RECRUITING

Tbilisi State Medical University and Ingorovka High Medical Technology University Clinic Ltd

Tbilisi, , Georgia

Site Status RECRUITING

JSV VIAN- Caraps Medline

Tbilisi, , Georgia

Site Status RECRUITING

Evex Hospitals - Caucasus Medical Center

Tbilisi, , Georgia

Site Status RECRUITING

Hiroshima City Hiroshima Citizens Hospital

Hiroshima, , Japan

Site Status RECRUITING

Ishikawa Prefectural Central Hospital

Kanazawa, , Japan

Site Status RECRUITING

Osaki Citizen Hospital

Osaki-shi, , Japan

Site Status RECRUITING

Saitama Cancer Center

Saitama, , Japan

Site Status RECRUITING

Keiyukai Sapporo Hospital

Sapporo, , Japan

Site Status RECRUITING

Countries

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United States Australia Chile China Georgia Japan

Central Contacts

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Ying Li

Role: CONTACT

+86 18810366427

Other Identifiers

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HLX22-GC-301

Identifier Type: -

Identifier Source: org_study_id

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