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Chemotherapy

Pembrolizumab + Trastuzumab + Chemotherapy for Gastric Cancer

Phase 3
Waitlist Available
Research Sponsored by Merck Sharp & Dohme LLC
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Histologically or cytologically confirmed diagnosis of previously untreated, locally advanced unresectable or metastatic HER2 positive gastric or GEJ adenocarcinoma
Has a performance status of 0 or 1 on the Eastern Cooperative Oncology Group (ECOG) Performance Scale within 3 days prior to the first dose of trial treatment
Timeline
Screening 3 weeks
Treatment Varies
Follow Up up to approximately 5 years
Awards & highlights

Study Summary

This trial will compare the efficacy of two different treatments for HER2-positive gastric cancer. The first treatment is pembrolizumab in combination with standard chemotherapy, and the second is trastuzumab in combination with standard chemotherapy. The hypothesis of the study is that pembrolizumab is superior to trastuzumab in terms of progression free survival and overall survival.

Who is the study for?
This trial is for adults with untreated advanced HER2+ gastric or GEJ adenocarcinoma. Participants must have measurable disease, be in good physical condition (ECOG 0-1), and expect to live more than 6 months. They should have proper organ function and agree to use contraception. Exclusions include recent radiotherapy, other active cancers within 5 years, autoimmune diseases treated in the past 2 years, infections needing systemic therapy, poorly controlled diarrhea, significant cardiac issues or hypersensitivities.Check my eligibility
What is being tested?
The study tests if pembrolizumab plus trastuzumab with standard chemotherapy works better for HER2+ gastric cancer than just trastuzumab with chemotherapy. It measures how long patients live without their cancer getting worse (PFS) and overall survival (OS). Patients are randomly assigned to receive either the new combination of drugs or the current standard treatment.See study design
What are the potential side effects?
Possible side effects include allergic reactions to medication components, immune system complications that may affect organs like lungs or intestines (pneumonitis/diarrhea), blood disorders from chemotherapy agents used in treatment such as Capecitabine and Cisplatin/Oxaliplatin/5-FU/S-1.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
Select...
My cancer is advanced stomach or GEJ cancer that has not been treated and is HER2 positive.
Select...
I am fully active or restricted in physically strenuous activity but can do light work.
Select...
My cancer is HER2-positive, confirmed by specific tests on my tumor.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~up to approximately 5 years
This trial's timeline: 3 weeks for screening, Varies for treatment, and up to approximately 5 years for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Overall Survival (OS)
Progression Free Survival (PFS) per RECIST 1.1 assessed by BICR
Secondary outcome measures
Adverse Events (AE)
Duration of Response (DOR) per RECIST 1.1 assessed by BICR
Objective Response Rate (ORR) per RECIST 1.1 assessed by BICR
+1 more

Side effects data

From 2024 Phase 2 trial • 57 Patients • NCT03004183
21%
Fatigue
13%
Nausea
11%
Back pain
9%
Shortness of Breath
9%
Anemia
9%
Abdominal pain
9%
Diarrhea
7%
Pneumonia
7%
Kidney Injury and/or Infection
7%
Dyspnea
7%
Weight Loss
5%
Malnutrition, Hypercalcemia and Weakness
5%
Pneumothorax
5%
Intractable pain, back pain, hip pain
5%
Activated partial thromboplastin time prolonged
4%
Pleural effusion
4%
Atrial fibrillation with rapid ventricular response
2%
Thrombocytopenia
2%
Respiratory failure
2%
Skin rash
2%
colitis
100%
80%
60%
40%
20%
0%
Study treatment Arm
Single Arm

Trial Design

2Treatment groups
Experimental Treatment
Active Control
Group I: Pembrolizumab +Trastuzumab + ChemotherapyExperimental Treatment7 Interventions
Participants receive 200 mg pembrolizumab IV every 3 weeks (Q3W) plus trastuzumab (8 mg/kg loading dose, 6 mg/kg maintenance thereafter) IV Q3W in combination with FP or CAPOX chemotherapy (Global Cohort) or SOX chemotherapy (Japan cohort).
Group II: Placebo +Trastuzumab + ChemotherapyActive Control7 Interventions
Participants receive matched placebo to pembrolizumab IV Q3W plus trastuzumab (8mg/kg loading dose, 6mg/kg maintenance thereafter) IV Q3W in combination with FP or CAPOX chemotherapy (Global Cohort) or SOX chemotherapy (Japan cohort).
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
5-FU
2014
Completed Phase 3
~3420
Capecitabine
2013
Completed Phase 3
~3420
Pembrolizumab
2017
Completed Phase 2
~2010
Cisplatin
2013
Completed Phase 3
~1940
Oxaliplatin
2011
Completed Phase 4
~2560
Trastuzumab
2014
Completed Phase 4
~5190
S-1
2013
Completed Phase 3
~2400

Find a Location

Who is running the clinical trial?

Merck Sharp & Dohme LLCLead Sponsor
3,886 Previous Clinical Trials
5,053,839 Total Patients Enrolled
Merck Sharp & Dohme Corp.Lead Sponsor
2,286 Previous Clinical Trials
4,581,090 Total Patients Enrolled
Medical DirectorStudy DirectorMerck Sharp & Dohme LLC
2,777 Previous Clinical Trials
8,062,748 Total Patients Enrolled

Media Library

5-FU (Chemotherapy) Clinical Trial Eligibility Overview. Trial Name: NCT03615326 — Phase 3
Gastroesophageal Junction Adenocarcinoma Research Study Groups: Pembrolizumab +Trastuzumab + Chemotherapy, Placebo +Trastuzumab + Chemotherapy
Gastroesophageal Junction Adenocarcinoma Clinical Trial 2023: 5-FU Highlights & Side Effects. Trial Name: NCT03615326 — Phase 3
5-FU (Chemotherapy) 2023 Treatment Timeline for Medical Study. Trial Name: NCT03615326 — Phase 3

Frequently Asked Questions

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

How many research centers are working on this project?

"In addition to other locations, this trial is enrolling patients at Memorial Sloan-Kettering Cancer Center (West Harrison site), Sanford Hematology Oncology in Sioux Falls, and Allegheny General Hospital in Pittsburgh."

Answered by AI

What benefits are researchers hoping to achieve through this clinical trial?

"Progression-Free Survival (PFS) will be the primary outcome measure of this trial, which is set to last for 5 years. PFS refers to how long patients live without their cancer progressing, as assessed by Response Evaluation Criteria In Solid Tumors (RECIST) 1.1 and Blinded Independent Central Review (BICR). Additionally, the study will monitor Objective Response Rate (ORR), defined as the percentage of participants who have either a Complete Response (CR, disappearance of all evidence of disease) or Partial Response (PR, regression of measurable disease with no new sites). ORR will be determined for each"

Answered by AI

What are Pembrolizumab's most common applications?

"Pembrolizumab is an immunotherapy medication that can be used to effectively treat refractory, relapsed mediastinal large b-cell lymphoma, inflammatory breast cancer (ibc), and advanced testicular cancer."

Answered by AI

What other scientific research has been conducted on Pembrolizumab?

"Pembrolizumab was first researched in 1997 at City of Hope Comprehensive Cancer Center. Since then, there have been a total of 20578 completed clinical trials worldwide. Right now, there are 2284 active studies taking place, with a large concentration in Harrison, New york."

Answered by AI

Can new patients still sign up for this clinical trial?

"This particular trial, which was first announced on October 5th 2018, is not recruiting patients at this time according to the clinicaltrials.gov website. The most recent update to the posting was on July 21st 2022. Despite this study being closed to participants, there are still over 3000 other trials that are currently looking for volunteers."

Answered by AI

Has Pembrolizumab been given the green light by the FDA?

"Since this is a Phase 3 clinical trial, there is some data supporting Pembrolizumab's efficacy and multiple rounds of safety data. Therefore, our team rates the safety as a 3."

Answered by AI

What is the total amount of people that are able to enroll in this clinical test?

"This specific clinical trial is not currently recruiting patients. Although, there are 1379 other trials for cancer of the esophagus and 2284 studies involving Pembrolizumab that are accepting participants."

Answered by AI
Recent research and studies
~113 spots leftby Apr 2025