Dissemin is shutting down on January 1st, 2025

Published in

Nature Research, Nature Genetics, 6(44), p. 651-658, 2012

DOI: 10.1038/ng.2270

Links

Tools

Export citation

Search in Google Scholar

Detectable clonal mosaicism and its relationship to aging and cancer

Journal article published in 2012 by Kevin B. Jacobs, Meredith Yeager, Jacobs Kb, Weiyin Zhou, Sholom Wacholder, Zhaoming Wang, Benjamin Rodriguez-Santiago, Amy Hutchinson, Xiang Deng, Chenwei Liu, Marie-Josephe Horner, Michael Cullen, Caroline G. Epstein, Laurie Burdett, Michael C. Dean and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Green circle
Preprint: archiving allowed
Orange circle
Postprint: archiving restricted
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

In an analysis of 31,717 cancer cases and 26,136 cancer-free controls from 13 genome-wide association studies, we observed large chromosomal abnormalities in a subset of clones in DNA obtained from blood or buccal samples. We observed mosaic abnormalities, either aneuploidy or copy-neutral loss of heterozygosity, of >2 Mb in size in autosomes of 517 individuals (0.89%), with abnormal cell proportions of between 7% and 95%. In cancer-free individuals, frequency increased with age, from 0.23% under 50 years to 1.91% between 75 and 79 years (P = 4.8 × 10(-8)). Mosaic abnormalities were more frequent in individuals with solid tumors (0.97% versus 0.74% in cancer-free individuals; odds ratio (OR) = 1.25; P = 0.016), with stronger association with cases who had DNA collected before diagnosis or treatment (OR = 1.45; P = 0.0005). Detectable mosaicism was also more common in individuals for whom DNA was collected at least 1 year before diagnosis with leukemia compared to cancer-free individuals (OR = 35.4; P = 3.8 × 10(-11)). These findings underscore the time-dependent nature of somatic events in the etiology of cancer and potentially other late-onset diseases.