Blood Epigenetic Age may Predict Cancer Incidence and Mortality.

Published

Journal Article

Biological measures of aging are important for understanding the health of an aging population, with epigenetics particularly promising. Previous studies found that tumor tissue is epigenetically older than its donors are chronologically. We examined whether blood Δage (the discrepancy between epigenetic and chronological ages) can predict cancer incidence or mortality, thus assessing its potential as a cancer biomarker. In a prospective cohort, Δage and its rate of change over time were calculated in 834 blood leukocyte samples collected from 442 participants free of cancer at blood draw. About 3-5 years before cancer onset or death, Δage was associated with cancer risks in a dose-responsive manner (P = 0.02) and a one-year increase in Δage was associated with cancer incidence (HR: 1.06, 95% CI: 1.02-1.10) and mortality (HR: 1.17, 95% CI: 1.07-1.28). Participants with smaller Δage and decelerated epigenetic aging over time had the lowest risks of cancer incidence (P = 0.003) and mortality (P = 0.02). Δage was associated with cancer incidence in a 'J-shaped' manner for subjects examined pre-2003, and with cancer mortality in a time-varying manner. We conclude that blood epigenetic age may mirror epigenetic abnormalities related to cancer development, potentially serving as a minimally invasive biomarker for cancer early detection.

Full Text

Duke Authors

Cited Authors

  • Zheng, Y; Joyce, BT; Colicino, E; Liu, L; Zhang, W; Dai, Q; Shrubsole, MJ; Kibbe, WA; Gao, T; Zhang, Z; Jafari, N; Vokonas, P; Schwartz, J; Baccarelli, AA; Hou, L

Published Date

  • March 2016

Published In

Volume / Issue

  • 5 /

Start / End Page

  • 68 - 73

PubMed ID

  • 27077113

Pubmed Central ID

  • 27077113

Electronic International Standard Serial Number (EISSN)

  • 2352-3964

International Standard Serial Number (ISSN)

  • 2352-3964

Digital Object Identifier (DOI)

  • 10.1016/j.ebiom.2016.02.008

Language

  • eng