Somatic Mutation: What Shapes the Mutational Landscape of Normal Epithelia?

Overview

Journal Cancer Discov

Specialty Oncology

Date 2022 Apr 9

PMID 35397477

Authors

Joanna C Fowler

Philip H Jones

Affiliations

Soon will be listed here.

Abstract

Significance: Recent advances in sequencing have found somatic mutations in all epithelial tissues studied to date. Here we review how the mutational landscape of normal epithelia is shaped by clonal competition within the stem cell niche combined with environmental exposures. Some of the selected mutant genes are oncogenic, whereas others may be inhibitory of transformation. Discoveries in this area leave many open questions, such as the definition of cancer driver genes, the mechanisms by which tissues constrain a high proportion of oncogenic mutant cells, and whether clonal fitness can be modulated to decrease cancer risk.

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