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Context-dependent effects of CDKN2A and other 9p21 gene losses during the evolution of esophageal cancer

  • Piyali Ganguli
  • , Celia C. Basanta
  • , Amelia Acha-Sagredo
  • , Hrvoje Misetic
  • , Maria Armero
  • , Akram Mendez
  • , Aeman Zahra
  • , Ginny Devonshire
  • , Gavin Kelly
  • , Adam Freeman
  • , Mary Green
  • , Emma Nye
  • , Anita Bichisecchi
  • , Paola Bonfanti
  • , OCCAMS Consortium
  • , Manuel Rodriguez-Justo
  • , Jo Spencer
  • , Rebecca C. Fitzgerald
  • , Francesca D. Ciccarelli (Lead / Corresponding author)

Research output: Contribution to journal › Article › peer-review

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Abstract

CDKN2A is a tumor suppressor located in chromosome 9p21 and frequently lost in Barrett’s esophagus (BE) and esophageal adenocarcinoma (EAC). How CDKN2A and other 9p21 gene co-deletions affect EAC evolution remains understudied. We explored the effects of 9p21 loss in EACs and cancer progressor and non-progressor BEs with matched genomic, transcriptomic and clinical data. Despite its cancer driver role, CDKN2A loss in BE prevents EAC initiation by counterselecting subsequent TP53 alterations. 9p21 gene co-deletions predict poor patient survival in EAC but not BE through context-dependent effects on cell cycle, oxidative phosphorylation and interferon response. Immune quantifications using bulk transcriptome, RNAscope and high-dimensional tissue imaging showed that IFNE loss reduces immune infiltration in BE, but not EAC. Mechanistically, CDKN2A loss suppresses the maintenance of squamous epithelium, contributing to a more aggressive phenotype. Our study demonstrates context-dependent roles of cancer genes during disease evolution, with consequences for cancer detection and patient management.

Original languageEnglish
Pages (from-to)158-174
Number of pages17
JournalNature Cancer
Volume6
Issue number1
Early online date3 Jan 2025
DOIs
Publication statusPublished - Jan 2025

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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