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{
 "approved_by_author": "\u231b",
 "citation": "Dec, Eric, et al. \"Centenarian clocks: epigenetic clocks for validating claims of exceptional longevity.\" GeroScience 45 (2023): 1817\u20131835.",
 "citations": 49,
 "citations_date": "2026-10-02",
 "clock_name": "encen40",
 "data_type": "DNA methylation",
 "doi": "https://doi.org/10.1007/s11357-023-00731-7",
 "journal": "GeroScience",
 "last_author": "Steve Horvath",
 "model_type": "elastic net regression",
 "n_features": 559,
 "notes": "Elastic-net DNAm-age clock trained in 7,039 people aged 40\u2013115, including centenarians, to reduce extreme-old-age underestimation.",
 "platform": [
  "Illumina 450K",
  "Illumina EPIC"
 ],
 "population": "older adults",
 "predicts": [
  "chronological age"
 ],
 "research_only": null,
 "species": "Homo sapiens",
 "tissue": [
  "whole blood",
  "saliva",
  "buccal epithelium"
 ],
 "training_target": [
  "chronological age"
 ],
 "unit": [
  "years"
 ],
 "version": "0.5.7",
 "year": 2023
}