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Risk Prediction of Metachronous Colorectal Cancer from Molecular Features of Adenomas: A Nested Case–Control Study

  • Henriette C. Jodal
  • , Eddymurphy U. Akwiwu
  • , Margriet Lemmens
  • , Pien M. Delis-van Diemen
  • , Dagmar Klotz
  • , Leticia G. Leon
  • , Soufyan Lakbir
  • , Meike de Wit
  • , Remond J.A. Fijneman
  • , Monique E. van Leerdam
  • , Evelien Dekker
  • , Manon C.W. Spaander
  • , Gerrit A. Meijer
  • , Magnus Løberg
  • , Veerle M.H. Coupé
  • , Mette Kalager
  • , Beatriz Carvalho*
  • *Corresponding author for this work
  • Vrije Universiteit Amsterdam

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Current morphologic features defining advanced adenomas (size ≥10 mm, high-grade dysplasia or ≥25% villous component) cannot optimally distinguish individuals at high risk or low risk of metachronous colorectal cancer (me-CRC), which may result in suboptimal surveillance. Certain DNA copy-number alterations (CNAs) are associated with adenoma-to-carcinoma progression. We aimed to evaluate whether these molecular features can better predict an individual's risk of me-CRC than the morphologic advanced adenoma features.

In this nested case–control study, 529 individuals with a single adenoma at first colonoscopy were selected from a Norwegian adenoma cohort. DNA copy-number profiles were determined, by low-coverage whole-genome sequencing. Prevalence of CNAs in advanced and non-advanced adenomas and its association (OR) with me-CRC was assessed. For the latter, cases (with me-CRC) were matched to controls (without me-CRC) on follow-up, age and sex.

CNAs associated with adenoma-to-carcinoma progression were observed in 85/267 (32%) of advanced adenomas and in 27/262 (10%) of non-advanced adenomas. me-CRC was statistically significantly associated, also after adjustment for other variables, with age at baseline [OR, 1.14; 95% confidence interval CI), 1.03–1.26; P = 0.012], advanced adenomas (OR, 2.46; 95% CI, 1.50–4.01; P < 0.001) and with the presence of ≥3 DNA copy-number losses (OR, 1.90; 95% CI. 1.02–3.54; P = 0.043).

Molecularly-defined high-risk adenomas were associated with me-CRC, but the association of advanced adenoma with me-CRC was stronger.
Original languageEnglish
Pages (from-to)2292-2301
JournalCancer Research Communications
Volume3
Issue number11
DOIs
Publication statusPublished - 13 Nov 2023
Externally publishedYes

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

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