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A Study to Investigate the Efficacy and Safety of ONO-4578 in Combination With Nivolumab and Chemotherapy in Chemotherapy-naïve Participants With HER2-negative Unresectable Advanced or Recurrent Gastric Cancer (Including Esophagogastric Junction Cancer)

A Randomized, Multicenter, Double-blind, Phase II Study to Compare the Efficacy and Safety of the Treatment With ONO-4578 in Combination With Nivolumab, Fluoropyrimidine-based and Platinum- Based Chemotherapy (Hereinafter Referred to as Chemotherapy) With Those of the Treatment With Placebo in Combination With Nivolumab and Chemotherapy in Chemotherapy-naïve Participants With Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Unresectable Advanced or Recurrent Gastric Cancer (Including Esophagogastric Junction Cancer)

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06256328
Enrollment
226
Registered
2024-02-13
Start date
2024-01-10
Completion date
2027-07-31
Last updated
2026-03-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Gastric Cancer

Brief summary

This study is to compare and evaluate the efficacy and safety of the treatment with ONO-4578 in combination with nivolumab and chemotherapy with those of the treatment with placebo in combination with nivolumab and chemotherapy in chemotherapy-naïve participants with HER2- negative unresectable advanced or recurrent gastric cancer (including esophagogastric junction cancer).

Interventions

Specified dose, once daily

DRUGOxaliplatin

Specified dose on specified days

DRUGCapecitabine

Specified dose on specified days

DRUGS-1

Specified dose on specified days

DRUGNivolumab

Specified dose on specified days

DRUGPlacebo

Specified dose, once daily

Sponsors

Ono Pharmaceutical Co. Ltd
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients with gastric or esophagogastric junction cancer histologically diagnosed as adenocarcinoma * Patients have not been treated with systemic chemotherapy as first-line therapy * Patients who can provide tumor tissue samples

Exclusion criteria

* Patients unable to take oral medicines * Patients with HER2-positive * Patients with contraindications to nivolumab, oxaliplatin, S-1, or capecitabine * Patients who have a history of severe drug-related adverse reactions caused by non- steroidal anti-inflammatory drugs (NSAIDs) or who have complications caused by NSAIDs requiring treatment * Patients with concurrent autoimmune disease or a history of chronic or recurrent autoimmune disease, such as rheumatoid arthritis * Patients with headache and/or nausea associated with brain metastasis

Design outcomes

Primary

MeasureTime frame
Progression-free survival (PFS) (site investigator assessment)up to 2years

Secondary

MeasureTime frameDescription
Overall survival (OS)up to 2years
Objective response rate (ORR) (site investigator assessment)up to 2years
Best overall response (BOR) (site investigator assessment)up to 2years
Duration of response (DOR) (site investigator assessment)up to 2years
Disease control rate (DCR) (site investigator assessment)up to 2years
Time to response (TTR) (site investigator assessment)up to 2years
Maximum percent change in the sum diameters of the target lesions (site investigator assessment)up to 2years
Progression-free survival after the next line of therapy (PFS2) (site investigator assessment)up to 2years
Adverse event (AE)Up to 30 days after the last doseNumber of participants with treatment-emergent adverse events (TEAEs) as assessed by CTCAE v5.0

Countries

Japan, South Korea, Taiwan

Contacts

STUDY_DIRECTORProject Leader

Ono Pharmaceutical Co. Ltd

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 14, 2026