Cited by 474Bioinformatics and Genomic NetworksGenetic Associations and EpidemiologyHealth, Environment, Cognitive Aging

The DOI matches its Crossref record; 158 of the 159 references it cites were found in a registry or an index, and 1 are not checked yet; 1 of the 126 sources its claims cite were checked for support.

Integrative Analysis of Multi-omics Data for Discovery and Functional Studies of Complex Human Diseases

Open access
Sun, Yan V., Hu, Yi-Juan·2016·Advances in Genetics

Abstract

Complex and dynamic networks of molecules are involved in human diseases. High-throughput technologies enable omics studies interrogating thousands to millions of makers with similar biochemical properties (eg, transcriptomics for RNA transcripts). However, a single layer of "omics" can only provide limited insights into the biological mechanisms of a disease. In the case of genome-wide association studies, although thousands of single nucleotide polymorphisms have been identified for complex diseases and traits, the functional implications and mechanisms of the associated loci are largely unknown. Additionally, the genomic variants alone are not able to explain the changing disease risk across the life span. DNA, RNA, protein, and metabolite often have complementary roles to jointly perform a certain biological function. Such complementary effects and synergistic interactions between omic layers in the life course can only be captured by integrative study of multiple molecular layers. Building upon the success in single-omics discovery research, population studies started adopting the multi-omics approach to better understanding the molecular function and disease etiology. Multi-omics approaches integrate data obtained from different omic levels to understand their interrelation and combined influence on the disease processes. Here, we summarize major omics approaches available in population research, and review integrative approaches and methodologies interrogating multiple omic layers, which enhance the gene discovery and functional analysis of human diseases. We seek to provide analytical recommendations for different types of multi-omics data and study designs to guide the emerging multi-omic research, and to suggest improvement of the existing analytical methods.

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Integrity signals

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Crossref · 10.1016/bs.adgen.2015.11.004

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85 of 85
  • The paper relies on this without support.

    The functional implications and mechanisms of GWAS-associated loci are largely unknown.

    “although thousands of SNPs have been identified for complex diseases and traits, the functional implications and mechanisms of the associated loci are largely unknown.”
  • The paper relies on this without support.

    Genomic variants alone cannot explain changes in disease risk across the lifespan.

    “Additionally, the genomic variants alone are not able to explain the changing disease risk across the life span.”
  • The paper relies on this without support.

    DNA methylome is the only epigenomic mechanism that is robustly measured in population samples.

    “We focus on DNA methylome in this article, because it is the only epigenomic mechanism being robustly measured in population samples.”
  • The paper relies on this without support.

    Most human diseases arise from both genetic and environmental factors and from their interplay.

    “Most human diseases are thought to be due to both genetic and environmental factors, and the interplay between genes and environment.”
  • The authors state this as an assumption.

    In Zhao et al.'s two-stage model, the SNP affects disease risk through affecting gene expression levels.

    “assuming that the SNP affects disease risk through affecting the gene expression levels.”
  • The authors state this as an assumption.

    In He et al.'s method, when Z = 1 and Uj = 1, Vj should always be 1, because a true eQTL of the gene is expected to be associated with disease.

    “When Z = 1 and Uj = 1, Vj should always be 1, as a true eQTL of the gene is expected to be associated with the disease.”
  • The authors state this as an assumption.

    In Huang et al.'s variance component test, the components in βG are independent and follow an arbitrary distribution with mean 0 and variance τG, and the components in βGE are independent and follow an arbitrary distribution with mean 0 and variance GE.

    “They assumed that the components in the vector βG are independent and follow an arbitrary distribution with mean 0 and variance τG, and that the components in βGE are independent and follow an arbitrary distribution with mean 0 and variance GE.”
  • The paper relies on this without support.

    Multi-omics study has been hampered mainly by lack of feasible technologies for large-scale population studies, availability of biospecimens, and high cost.

    “Despite of its appealing scientific gain, the materialization of the multi-omics study has been hampered mainly due to the lack of feasible technologies for large-scale population studies, availability of biospecimens and the high cost attached to them.”
  • The paper relies on this without support.

    Core technologies behind high-throughput assays such as sequencing and mass spectrometry have become more sensitive, accurate, and affordable in recent years.

    “In recent years, the core technologies behind the high-throughput assays, such as sequencing and mass spectrometry, have become more and more sensitive, accurate, and affordable.”
  • The paper relies on this without support.

    Interrogation of complementary omics beyond a single omic layer has been explored for several diseases and model systems to demonstrate the utility and feasibility of multi-omics research.

    “Interrogation of complementary omics beyond a single omic layer has been explored for several diseases and model systems to demonstrate the utility and feasibility of multi-omics research.”
  • The paper relies on this without support.

    Current multi-omics research of human diseases demands a large amount of resources to carry out a population study.

    “Current multi-omics research of human diseases demands a large amount of resources to carry out a population study.”
  • The paper relies on this without support.

    Single-omic scans such as GWAS and EWAS continue to provide insights into the mechanism and etiology of human diseases.

    “The thorough scan of a single type of biologically function features (e.g., GWAS and EWAS) continues to provide insights into the mechanism and etiology of human diseases.”
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Metadata

Authors
Sun, Y. V., & Hu, Y.-J.
Affiliations
Emory University (US)
Corresponding author
Sun, Yan V.
Venue
Advances in Genetics
Publisher
Elsevier
Published
2016
Volume
93
Pages
147-190
ISSN
0065-2660 (ISSN-L)
OpenAlex
W2276765849
Cited by
459
References
159
Citations by year
2026: 28 · 2025: 51 · 2024: 79 · 2023: 48 · 2022: 70 · 2021: 63 · 2020: 43 · 2019: 39 · 2018: 24 · 2017: 11 · 2016: 3
FWCI
31.82
Type
book chapter
Language
en
Open access
Locations
  • Advances in genetics (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
American Heart Association (13GRNT17060002)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Health, Environment, Cognitive Aging
Keywords
multi-omics integration, complex diseases, gene discovery, functional genomics, etiology, single nucleotide polymorphisms, genome-wide association study, life course, population genetics
MeSH terms
Data Interpretation, Statistical, Disease, Environmental Exposure, Genetic Markers, Humans, Phenotype, Polymorphism, Single Nucleotide, Quantitative Trait Loci, Proteomics, Genome-Wide Association Study, Metabolomics, Epigenomics, Transcriptome

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