Evolving landscape of targeted treatment options for HER2-positive gastric/gastroesophageal adenocarcinomas

Raisa Epistola1, Joseph Chao2, Jennifer Lee1

  • 1Harbor-UCLA Medical Center, Division of Hematology and Medical Oncology, Torrance, California.

Insights

Human epidermal growth factor receptor 2 (HER2)-targeted therapies improve outcomes for patients with HER2-positive gastric and gastroesophageal cancers. This review covers HER2 testing, treatment strategies, and future directions.

Area of Science:

  • Oncology
  • Gastroenterology

Background:

  • Gastric and gastroesophageal adenocarcinomas are aggressive cancers with limited treatment options.
  • Human epidermal growth factor receptor 2 (HER2) expression is a key biomarker in a subset of these tumors.

Purpose of the Study:

  • To review the clinical trials and contemporary use of HER2-targeted therapies in gastric and gastroesophageal cancers.
  • To discuss challenges in HER2 testing and patient selection.
  • To highlight ongoing research in novel HER2-directed treatments.

Main Methods:

  • Literature review of key clinical trials and studies.
  • Analysis of current guidelines and testing methodologies for HER2 status.
  • Summary of ongoing clinical investigations.

Main Results:

  • HER2-targeted treatments have demonstrated improved outcomes in both localized and advanced settings for HER2-positive patients.
  • Current HER2 testing methods have limitations, impacting optimal patient identification.
  • Novel combinations and agents are under investigation to further enhance efficacy.

Conclusions:

  • HER2-targeted therapy is a crucial component of treatment for HER2-positive gastric and gastroesophageal adenocarcinomas.
  • Improving HER2 testing accuracy and exploring new therapeutic strategies are essential for advancing patient care.

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