Comparative Molecular Analysis of Gastrointestinal Adenocarcinomas.
Cancer Cell
; 33(4): 721-735.e8, 2018 04 09.
Article
en En
| MEDLINE
| ID: mdl-29622466
ABSTRACT
We analyzed 921 adenocarcinomas of the esophagus, stomach, colon, and rectum to examine shared and distinguishing molecular characteristics of gastrointestinal tract adenocarcinomas (GIACs). Hypermutated tumors were distinct regardless of cancer type and comprised those enriched for insertions/deletions, representing microsatellite instability cases with epigenetic silencing of MLH1 in the context of CpG island methylator phenotype, plus tumors with elevated single-nucleotide variants associated with mutations in POLE. Tumors with chromosomal instability were diverse, with gastroesophageal adenocarcinomas harboring fragmented genomes associated with genomic doubling and distinct mutational signatures. We identified a group of tumors in the colon and rectum lacking hypermutation and aneuploidy termed genome stable and enriched in DNA hypermethylation and mutations in KRAS, SOX9, and PCBP1.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Adenocarcinoma
/
Metilación de ADN
/
Inestabilidad Cromosómica
/
ADN Polimerasa II
/
Homólogo 1 de la Proteína MutL
/
Proteínas de Unión a Poli-ADP-Ribosa
/
Neoplasias Gastrointestinales
Tipo de estudio:
Prognostic_studies
Límite:
Female
/
Humans
/
Male
Idioma:
En
Revista:
Cancer Cell
Asunto de la revista:
NEOPLASIAS
Año:
2018
Tipo del documento:
Article
País de afiliación:
Estados Unidos