Safety signals of zolbetuximab in gastric or gastroesophageal junction adenocarcinoma: a comprehensive analysis of the FDA adverse event reporting system (FAERS) data - Report - MDSpire

Safety signals of zolbetuximab in gastric or gastroesophageal junction adenocarcinoma: a comprehensive analysis of the FDA adverse event reporting system (FAERS) data

  • By

  • Li Lin

  • Maohua Chen

  • Chenmin Wu

  • Hong Chen

  • July 10, 2026

  • 0 min

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Clinical Report: Evaluation of Safety Signals for Zolbetuximab in Advanced Gastric Cancer

Overview

This study analyzed 676 adverse event reports related to zolbetuximab from the FAERS database, identifying both known and several unlabeled safety signals.

Background

Zolbetuximab is a monoclonal antibody targeting CLDN18.2, a therapeutic target in advanced gastric or gastroesophageal junction adenocarcinoma. The safety profile of zolbetuximab in real-world settings remains inadequately characterized.

Data Highlights

Adverse EventTime to Onset
Gastritis0 days
Protein-losing gastroenteropathy0 days
Peripheral edema0 days
Compression fracture0 days
Vascular pain0 days

Key Findings

  • A total of 676 adverse event reports were analyzed from FAERS.
  • Disproportionality analysis confirmed known gastrointestinal and metabolic disorders.
  • Several unlabeled adverse events were identified, including gastritis and protein-losing gastroenteropathy.
  • 82.9% of adverse events occurred within the first 30 days of treatment.
  • The median time-to-onset for reported events was 0 days.

Clinical Implications

Continuous monitoring and reporting of adverse events are essential for patient safety.

Conclusion

This study provides insights into the safety profile of zolbetuximab.

Related Resources & Content

  1. FDA, FDA, 2024 -- FDA approves zolbetuximab-clzb with chemotherapy for gastric or gastroesophageal junction adenocarcinoma
  2. Zolbetuximab plus mFOLFOX6 in patients with CLDN18.2-positive, HER2-negative, untreated, locally advanced unresectable or metastatic gastric or gastro-oesophageal junction adenocarcinoma (SPOTLIGHT): a multicentre, randomised, double-blind, phase 3 trial - PubMed
  3. Gastric Cancer — Gallbladder swelling as an indicator of zolbetuximab-related protein-losing enteropathy in a patient with gastric cancer: a case study
  4. the asco post — Primary Analysis Shows Survival Benefit With Bemarituzumab Plus Chemotherapy in Gastric or Gastroesophageal Junction Cancer
  5. the asco post — Primary Analysis Shows Survival Benefit With Bemarituzumab Plus Chemotherapy in Gastric or Gastroesophageal Junction Cancer
  6. The ASCO Post — First-Line Zanidatamab Plus Chemotherapy for HER2-Expressing Metastatic Gastroesophageal Adenocarcinoma
  7. Gallbladder swelling as an indicator of zolbetuximab-related protein-losing enteropathy in a patient with gastric cancer: a case study
  8. Primary Analysis Shows Survival Benefit With Bemarituzumab Plus Chemotherapy in Gastric or Gastroesophageal Junction Cancer
  9. FDA approves zolbetuximab-clzb with chemotherapy for gastric or gastroesophageal junction adenocarcinoma | FDA
  10. Zolbetuximab plus mFOLFOX6 in patients with CLDN18.2-positive, HER2-negative, untreated, locally advanced unresectable or metastatic gastric or gastro-oesophageal junction adenocarcinoma (SPOTLIGHT): a multicentre, randomised, double-blind, phase 3 trial - PubMed
  11. VYLOY (zolbetuximab-clzb) Highlights of Prescribing Information

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