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Published in: Journal of Hematology & Oncology 1/2019

Open Access 01-12-2019 | Gastric Cancer | Review

Progress and challenges in HER2-positive gastroesophageal adenocarcinoma

Authors: Dan Zhao, Samuel J. Klempner, Joseph Chao

Published in: Journal of Hematology & Oncology | Issue 1/2019

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Abstract

HER2 expression remains an important biomarker to guide the addition of the monoclonal antibody trastuzumab to first-line systemic chemotherapy in unresectable, metastatic gastroesophageal adenocarcinomas (GEA). However, in contrast to breast cancer, other HER2-targeted strategies to date have not improved outcomes in this molecular subtype of GEA. Since the initial development of HER2 biomarker testing guidelines, significant spatial intratumoral heterogeneity of HER2 overexpression has been recognized as a major characteristic of this disease. In this review, we aim to survey the seminal positive and negative trials investigating HER2-targeted agents for GEA. We also highlight emerging data on the genomic and temporal heterogeneity of molecular resistance alterations that have yielded further insight into the heterogeneity of therapeutic responses. We conclude with an overview of promising novel agents and strategies which may refine the therapeutic landscape.
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Metadata
Title
Progress and challenges in HER2-positive gastroesophageal adenocarcinoma
Authors
Dan Zhao
Samuel J. Klempner
Joseph Chao
Publication date
01-12-2019
Publisher
BioMed Central
Published in
Journal of Hematology & Oncology / Issue 1/2019
Electronic ISSN: 1756-8722
DOI
https://doi.org/10.1186/s13045-019-0737-2

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