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Heterogeneity in Gastric Cancer: From Pure Morphology to Molecular Classifications

Title
Heterogeneity in Gastric Cancer: From Pure Morphology to Molecular Classifications
Type
Article in International Scientific Journal
Year
2018
Authors
Gullo, I
(Author)
FMUP
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Oliveira C
(Author)
FMUP
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Almeida, GM
(Author)
Other
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Journal
Title: PathobiologyImported from Authenticus Search for Journal Publications
Vol. 85
Pages: 50-63
ISSN: 1015-2008
Publisher: Karger
Other information
Authenticus ID: P-00N-69F
Abstract (EN): Gastric cancer (GC) represents a global health concern. Despite advances in prevention, diagnosis, and therapy, GC is still the third leading cause of cancer mortality worldwide, with more than 720,000 estimated deaths in 2012. Overall survival for advanced disease is about 1 year, a dismal prognosis that is partly due to the high levels of biological heterogeneity found in GC. Indeed, GC is a highly heterogeneous disease from morphological and molecular standpoints. The numerous histological and molecular classifications currently available reflect such heterogeneity. Although recent high-throughput studies cluster the molecular data obtained into subgroups with clinical relevance, we still need a practical, prognostic, and predictive classification system, integrating morphological and molecular features, towards the identification of novel therapeutic targets. It is noteworthy that GC heterogeneity encompasses not only interpatient variability (intertumour heterogeneity), but also variations within the same tumour (intratumour heterogeneity). The latter encompasses spatial heterogeneity (in different tumour areas) and temporal heterogeneity (along progression from primary to recurrent and/or metastatic disease). In this review, we analyse the morphological, immunophenotypic, and molecular heterogeneity in GC as the basis for a better understanding of the disease, and discuss the practical implications for diagnostic pathology, prognostic evaluation, and precision therapy. (C) 2017 S. Karger AG, Basel.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 14
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