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Bemarituzumab Plus Chemotherapy and Nivolumab Versus Chemotherapy and Nivolumab for FGFR2b Overexpressed Untreated Advanced Gastric and Gastroesophageal Junction Cancer.

Phase 3
Active, not recruiting
Conditions
Gastric Cancer
Gastroesophageal Junction Adenocarcinoma
Interventions
Drug: Chemotherapy
Other: Placebo
Registration Number
NCT05111626
Lead Sponsor
Amgen
Brief Summary

The main objective of Part 1 is to evaluate the safety and tolerability of bemarituzumab plus 5-fluorouracil, leucovorin, and oxaliplatin (mFOLFOX6) and nivolumab.

The main objective Part 2 is to compare efficacy of bemarituzumab plus chemotherapy (mFOLFOX6 or capecitabine combined with oxaliplatin (CAPOX)) and nivolumab to placebo plus chemotherapy (mFOLFOX6 or CAPOX) and nivolumab as assessed by overall survival.

Detailed Description

Not available

Recruitment & Eligibility

Status
ACTIVE_NOT_RECRUITING
Sex
All
Target Recruitment
515
Inclusion Criteria

Not provided

Exclusion Criteria
  • Prior treatment with any selective inhibitor of the fibroblast growth factor (FGF)-FGFR pathway
  • Known positive human epidermal growth factor receptor 2 (HER2) status
  • Untreated or symptomatic central nervous system disease metastases and leptomeningeal disease
  • Peripheral sensory neuropathy grade 2 or higher
  • Clinically significant cardiac disease
  • Other malignancy within the last 2 years (exceptions for definitively treated disease)
  • Chronic or systemic ophthalmologic disorders
  • Major surgery or other investigational study within 28 days prior to randomization
  • Palliative radiotherapy within 14 days prior to randomization
  • Abnormalities of the cornea that may pose an increased risk of developing a corneal ulcer
  • Active autoimmune disease that has required systemic treatment (except replacement therapy) within the past 2 years or any other diseases requiring immunosuppressive therapy while on study

Study & Design

Study Type
INTERVENTIONAL
Study Design
SEQUENTIAL
Arm && Interventions
GroupInterventionDescription
Part 1 Safety Lead-in: Bemarituzumab with mFOLFOX6 and NivolumabBemarituzumabParticipants will be administered bemarituzumab at different doses with mFOLFOX6 and nivolumab to determine the recommended phase 3 dose (RP3D) based on occurrence of dose-limiting toxicities (DLTs), and on an evaluation of the overall safety, tolerability, and pharmacokinetics (PK).
Part 1 Safety Lead-in: Bemarituzumab with mFOLFOX6 and NivolumabNivolumabParticipants will be administered bemarituzumab at different doses with mFOLFOX6 and nivolumab to determine the recommended phase 3 dose (RP3D) based on occurrence of dose-limiting toxicities (DLTs), and on an evaluation of the overall safety, tolerability, and pharmacokinetics (PK).
Part 1 Safety Lead-in: Bemarituzumab with mFOLFOX6 and NivolumabChemotherapyParticipants will be administered bemarituzumab at different doses with mFOLFOX6 and nivolumab to determine the recommended phase 3 dose (RP3D) based on occurrence of dose-limiting toxicities (DLTs), and on an evaluation of the overall safety, tolerability, and pharmacokinetics (PK).
Part 2: Bemarituzumab with chemotherapy (mFOLFOX6 or CAPOX) and NivolumabBemarituzumabParticipants will be administered bemarituzumab at the RP3D determined from Part 1 in combination with mFOLFOX6 and nivolumab on a 14-day cycle. Or participants will be administered bemarituzumab in combination with CAPOX and nivolumab on a 21-day cycle.
Part 2: Bemarituzumab with chemotherapy (mFOLFOX6 or CAPOX) and NivolumabNivolumabParticipants will be administered bemarituzumab at the RP3D determined from Part 1 in combination with mFOLFOX6 and nivolumab on a 14-day cycle. Or participants will be administered bemarituzumab in combination with CAPOX and nivolumab on a 21-day cycle.
Part 2: Bemarituzumab with chemotherapy (mFOLFOX6 or CAPOX) and NivolumabChemotherapyParticipants will be administered bemarituzumab at the RP3D determined from Part 1 in combination with mFOLFOX6 and nivolumab on a 14-day cycle. Or participants will be administered bemarituzumab in combination with CAPOX and nivolumab on a 21-day cycle.
Part 2: Placebo with chemotherapy (mFOLFOX6 or CAPOX) and NivolumabNivolumabParticipants will be administered placebo comparator in combination with mFOLFOX6 and nivolumab on a 14-day cycle. Or participants will be administered placebo comparator in combination with CAPOX and nivolumab on a 21-day cycle.
Part 2: Placebo with chemotherapy (mFOLFOX6 or CAPOX) and NivolumabChemotherapyParticipants will be administered placebo comparator in combination with mFOLFOX6 and nivolumab on a 14-day cycle. Or participants will be administered placebo comparator in combination with CAPOX and nivolumab on a 21-day cycle.
Part 2: Placebo with chemotherapy (mFOLFOX6 or CAPOX) and NivolumabPlaceboParticipants will be administered placebo comparator in combination with mFOLFOX6 and nivolumab on a 14-day cycle. Or participants will be administered placebo comparator in combination with CAPOX and nivolumab on a 21-day cycle.
Primary Outcome Measures
NameTimeMethod
Part 1: Number of Participants Who Experienced DLTs28 days
Part 1: Number of Participants Who Experienced One or More Treatment-Emergent Adverse Events (TEAEs)Up to 4.5 years
Part 1: Number of Participants Who Experienced One or More Related TEAEsUp to 4.5 years
Part 1: Number of Participants With Clinically Significant Changes in Vital SignsUp to 4.5 years
Part 1: Number of Participants With Clinically Significant Changes in Visual AcuityUp to 4.5 years
Part 1: Number of Participants With Clinically Significant Changes in Physical ExaminationsUp to 4.5 years
Part 1: Number of Participants with Clinically Significant Changes in Clinical Laboratory TestsUp to 4.5 years
Part 2: Overall Survival in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsUp to 4.5 years
Secondary Outcome Measures
NameTimeMethod
Part 1: Duration of Response (DoR)Up to 4.5 years
Part 1: Disease Control Rate (DCR)Up to 4.5 years
Part 1: Progression Free Survival (PFS)Up to 4.5 years
Part 1: Overall SurvivalUp to 4.5 years
Part 1: Area Under the Concentration Time Curve (AUC) of BemarituzumabDay 1 to up to 4.5 years
Part 2: Cmax of BemarituzumabDay 1 to up to 4.5 years
Part 1: Observed Concentration at the End of a Dose Interval (Ctrough) of BemarituzumabDay 1 to up to 4.5 years
Part 1: Number of Participants With Anti-Bemarituzumab Antibody FormationDay 1 to up to 4.5 years
Part 2: PFS in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsUp to 4.5 years
Part 2: Overall Survival in All Randomized ParticipantsUp to 4.5 years
Part 2: PFS in All Randomized ParticipantsUp to 4.5 years
Part 2: Number of Participants Who Experienced One or More TEAEsUp to 4.5 years
Part 2: Number of Participants With Clinically Significant Changes in Vital SignsUp to 4.5 years
Part 2: Number of Participants With Clinically Significant Changes in Visual AcuityUp to 4.5 years
Part 2: Number of Participants with Clinically Significant Changes in Clinical Laboratory TestsUp to 4.5 years
Part 2: ORUp to 4.5 years
Part 2: DoRUp to 4.5 years
Part 2: DCRUp to 4.5 years
Part 2: Mean Score in European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire Version 3.0 (QLQ-C30) Individual Scores in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsUp to 4.5 years
Part 2: Change From Baseline in EORTC QLQ-C30 Individual Scores in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsBaseline to up to 4.5 years
Part 2: Mean Score in Stomach Cancer Related Symptoms Measured by EORTC Quality of Life Questionnaire-Stomach 22 (QLQ-STO22) in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsUp to 4.5 years
Part 2: Change From Baseline in Stomach Cancer Related Symptoms Measured by EORTC QLQ-STO22 in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsBaseline to up to 4.5 years
Part 2: Mean Score of Visual Analogue Scale (VAS) Scores as Measured by EuroQol 5-dimensional (EQ-5D-5L) in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsUp to 4.5 years
Part 2: Change From Baseline of VAS Scores as Measured by EQ-5D-5L in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsBaseline to up to 4.5 years
Part 2: Time to Deterioration in Stomach Cancer Related Symptoms Measured by EORTC QLQ-STO22 in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsDay 1 to up to 4.5 years
Part 2: Time to Deterioration in Health-Related Quality of Life (HRQoL) Scores in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsDay 1 to up to 4.5 years
Part 2: Time to Deterioration in Physical Function Scores in FGFR2b ≥ 10% 2+/3+ Tumor Cell Staining ParticipantsDay 1 to up to 4.5 years
Part 2: AUC of BemarituzumabDay 1 to up to 4.5 years
Part 2: Ctrough of BemarituzumabDay 1 to up to 4.5 years
Part 2: Number of Participants With Anti-Bemarituzumab Antibody FormationDay 1 to up to 4.5 years
Part 1: Objective Response (OR)Up to 4.5 years
Part 1: Maximum Observed Concentration (Cmax) of BemarituzumabDay 1 to up to 4.5 years

Trial Locations

Locations (347)

Mayo Clinic - Arizona

🇺🇸

Phoenix, Arizona, United States

The Oncology Institute Clinical Research

🇺🇸

Cerritos, California, United States

Cancer and Blood Specialty Clinic

🇺🇸

Downey, California, United States

City of Hope National Medical Center

🇺🇸

Duarte, California, United States

University of California Los Angeles

🇺🇸

Los Angeles, California, United States

University of California Irvine

🇺🇸

Orange, California, United States

Torrance Memorial Physician Network

🇺🇸

Redondo Beach, California, United States

Translational Research in Oncology - US Inc

🇺🇸

Santa Monica, California, United States

Translational Research in Oncology US Inc, Trio Central Pharmacy

🇺🇸

Santa Monica, California, United States

Olive View-University of California in Los Angeles Medical Center

🇺🇸

Sylmar, California, United States

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Mayo Clinic - Arizona
🇺🇸Phoenix, Arizona, United States

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