Cited by 94Epigenetics and DNA MethylationGene expression and cancer classificationGenetic Associations and Epidemiology

Evaluation of microarray-based DNA methylation measurement using technical replicates: the Atherosclerosis Risk In Communities (ARIC) Study

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Bose, Maitreyee, Wu, Chong, Pankow, James S, Demerath, Ellen W, Bressler, Jan, Fornage, Myriam, Grove, Megan L, Mosley, Thomas H +6 more·2014·BMC Bioinformatics

Abstract

BACKGROUND: DNA methylation is a widely studied epigenetic phenomenon; alterations in methylation patterns influence human phenotypes and risk of disease. As part of the Atherosclerosis Risk in Communities (ARIC) study, the Illumina Infinium HumanMethylation450 (HM450) BeadChip was used to measure DNA methylation in peripheral blood obtained from ~3000 African American study participants. Over 480,000 cytosine-guanine (CpG) dinucleotide sites were surveyed on the HM450 BeadChip. To evaluate the impact of technical variation, 265 technical replicates from 130 participants were included in the study. RESULTS: For each CpG site, we calculated the intraclass correlation coefficient (ICC) to compare variation of methylation levels within- and between-replicate pairs, ranging between 0 and 1. We modeled the distribution of ICC as a mixture of censored or truncated normal and normal distributions using an EM algorithm. The CpG sites were clustered into low- and high-reliability groups, according to the calculated posterior probabilities. We also demonstrated the performance of this clustering when applied to a study of association between methylation levels and smoking status of individuals. For the CpG sites showing genome-wide significant association with smoking status, most (~96%) were seen from sites in the high reliability cluster. CONCLUSIONS: We suggest that CpG sites with low ICC may be excluded from subsequent association analyses, or extra caution needs to be taken for associations at such sites.

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  • The mild correlation among first-generation epigenetic clock age gaps could be due to large technical noise in DNA methylation arrays, which limits robustness across datasets.

    “This could be due to the large degree of technical noise in DNA methylation arrays152–154, which limits the robustness of applying these models across datasets.”

    From Measuring biological age using omics data (2022) · cites this paper as [152]

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Authors
Bose, M., Wu, C., Pankow, J. S., Demerath, E. W., Bressler, J., Fornage, M., Grove, M. L., Mosley, T. H., Hicks, C., North, K., Kao, W. H., Zhang, Y., Boerwinkle, E., & Guan, W.
Affiliations
  • University of Minnesota (US)
  • The University of Texas Health Science Center at Houston (US)
  • University of Mississippi (US)
  • University of North Carolina at Chapel Hill (US)
  • Johns Hopkins University (US)
  • College of Saint Benedict and Saint John's University (US)
Corresponding author
Guan, Weihua
Venue
BMC Bioinformatics
Published
2014-09-19
Volume
15
Issue
1
Pages
312-312
ISSN
1471-2105 (ISSN-L)
OpenAlex
W2024362135
Cited by
86
References
34
Citations by year
2026: 2 · 2025: 7 · 2024: 9 · 2023: 13 · 2022: 25 · 2021: 8 · 2020: 9 · 2018: 4 · 2017: 4 · 2016: 2 · 2015: 3
FWCI
1.23
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • BMC Bioinformatics (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion, cc-by)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • UNC Libraries
Funders
  • University of Minnesota
  • National Institutes of Health (HHSN268201100012C, HHSN268201100008C, HHSN268201100006C, HHSN26820- 1100005C, HHSN268201100007C, HHSN268201100011C, HHSN268201100010C, HHSN268201100009C)
  • National Heart, Lung, and Blood Institute (HHSN268201 100012C, HHSN268201100007I, HHSN268201100007C, HHSN2682 01100008C, HH-SN-268201100006C, HHSN268201100011C, HHSN2682011-00005I, HHSN2682011-­00009I, HHSN268201100005C, HHSN268201100005G, HHSN268201100010C, HHSN268201100011I, HHSN268201100005C, HHSN268201100006C, HHSN268201100007C, HHSN268201100008C, HHSN268201100009C, HHSN268201100010C, HHSN268201100011C, and HHSN268201100012C, HHSN26820 1100009C, HHSN2682011-00008I, RC2HL102419)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene expression and cancer classification
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
Keywords
DNA methylation, technical replicates, measurement reliability, intraclass correlation coefficient, CpG sites, technical variability, smoking status, epigenetics, African American participants, Atherosclerosis Risk in Communities Study
MeSH terms
Female, Humans, Male, Middle Aged, Residence Characteristics, Reproducibility of Results, Cluster Analysis, CpG Islands, DNA Methylation, Genetic Predisposition to Disease, Oligonucleotide Array Sequence Analysis, Atherosclerosis, Epigenomics

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