Key Points
-
Genome-wide association studies (GWASs) have revolutionized the identification of genomic regions associated with complex diseases.
-
GWAS-defined variants typically explain only a small proportion of trait heritability, raising questions about the ultimate applicability of these findings to risk prediction and clinical decision-making.
-
Criticisms of the GWAS approach include poor assessment of rare and structural variants, small effect sizes and proportion of heritability explained, high proportion of signals in difficult-to-interpret non-coding regions, difficulty in dissecting linkage disequilibrium patterns and poor discriminative ability in predicting disease risk.
-
Clinically relevant findings are beginning to be applied in four key areas: risk prediction, disease subclassification, drug development and drug toxicity.
-
Translational potential of GWAS findings may be less driven by the relevant genetic architecture and variants identified by the clinical scenario, such as importance of early detection, availability of alternative treatments, and accessibility of genotyping.
-
A key component in translating GWAS findings is linking initial genomic discoveries with clinicians who appreciate the clinical dilemmas that the findings could address, such as the importance of early prediction in type 1 diabetes, molecular subtyping of type 2 diabetes or seemingly unpredictable drug side effects.
-
For potential GWAS-based improvements in care to be actually implemented clinically requires additional capabilities, including: rapid, low-cost genotyping; point-of-care educational information and decision support tools; agreed-on evidence standards and practice guidelines; and institutional willingness to support the infrastructure needed for implementation.
Abstract
Genome-wide association studies (GWASs) have been heralded as a major advance in biomedical discovery, having identified ~2,000 robust associations with complex diseases since 2005. Despite this success, they have met considerable scepticism regarding their clinical applicability; this scepticism arises from such aspects as the modest effect sizes of associated variants and their unclear functional consequences. There are, however, promising examples of GWAS findings that will or that may soon be translated into clinical care. These examples include variants identified through GWASs that provide strongly predictive or prognostic information or that have important pharmacological implications; these examples may illustrate promising approaches to wider clinical application.
This is a preview of subscription content, access via your institution
Relevant articles
Open Access articles citing this article.
-
Automatic block-wise genotype-phenotype association detection based on hidden Markov model
BMC Bioinformatics Open Access 07 April 2023
-
Gene-environment interaction explains a part of missing heritability in human body mass index
Communications Biology Open Access 25 March 2023
-
Processing genome-wide association studies within a repository of heterogeneous genomic datasets
BMC Genomic Data Open Access 03 March 2023
Access options
Subscribe to this journal
Receive 12 print issues and online access
$189.00 per year
only $15.75 per issue
Rent or buy this article
Prices vary by article type
from$1.95
to$39.95
Prices may be subject to local taxes which are calculated during checkout





References
Lango Allen, H. et al. Hundreds of variants clustered in genomic loci and biological pathways affect human height. Nature 467, 832–838 (2010).
Teslovich, T. M. et al. Biological, clinical and population relevance of 95 loci for blood lipids. Nature 466, 707–713 (2010).
Manolio, T. A. et al. Finding the missing heritability of complex diseases. Nature 461, 747–753 (2009).
Goldstein, D. B. Common genetic variation and human traits. N. Engl. J. Med. 360, 1696–1698 (2009).
Jakobsdottir, J., Gorin, M. B., Conley, Y. P., Ferrell, R. E. & Weeks, D. E. Interpretation of genetic association studies: markers with replicated highly significant odds ratios may be poor classifiers. PLoS Genet. 5, e1000337 (2009). This is a review of the predictive ability of strongly associated GWAS-defined SNPs in four diseases, demonstrating that high odds ratios (>50) are needed to improve prediction.
Aschard, H. et al. Inclusion of gene–gene and gene–environment interactions unlikely to dramatically improve risk prediction for complex diseases. Am. J. Hum. Genet. 90, 962–972 (2012).
Manolio, T. A. Genome-wide association studies and disease risk assessment. N. Engl. J. Med. 363, 166–176 (2010).
Lopes, M. C., Zeggini, E. & Panoutsopoulou, K. Do genome-wide association scans have potential for translation? Clin. Chem. Lab. Med. 50, 255–260 (2011).
Evans, J. P., Meslin, E. M., Marteau, T. M. & Caulfield, T. Deflating the genomic bubble. Science 331, 861–862 (2011).
Varmus, H. Ten years on — the human genome and medicine. N. Engl. J. Med. 362, 2028–2029 (2010).
Dulbecco, R. A turning point in cancer research: sequencing the human genome. Science 231, 1055–1056 (1986).
Collins, F. Shattuck lecture: medical and societal consequences of the human genome project. N. Engl. J. Med. 341, 28–37 (1999).
Committee on Quality of Health Care in America, Institute of Medicine. Crossing the Quality Chasm: A New Health System for the 21st Century (National Academy Press, 2001).
Klein, R. J. et al. Complement factor H polymorphism in age-related macular degeneration. Science 308, 385–389 (2005).
Rioux, J. D. et al. Genome-wide association study identifies new susceptibility loci for Crohn disease and implicates autophagy in disease pathogenesis. Nature Genet. 39, 596–604 (2007).
Budarf, M. L., Labbé, C., David, G. & Rioux, J. D. GWA studies: rewriting the story of IBD. Trends Genet. 25, 137–146 (2009).
Genomes Project Consortium. A map of human genome variation from population-scale sequencing. Nature 467, 1061–1073 (2010).
Tennessen, J. A. et al. Evolution and functional impact of rare coding variation from deep sequencing of human exomes. Science 337, 64–69 (2012). This is a summary report of rare variation identified in the US National Institutes of Health (NIH) Heart, Lung and Blood Institute Exome Sequencing Project for 15,585 human protein-coding genes in 2,440 individuals of European and African ancestry.
McClellan, J. & King, M. C. Genetic heterogeneity in human disease. Cell 141, 210–217 (2010).
Bustamante, C. D., Burchard, E. G. & de la Vega, F. M. Genomics for the world. Nature 475, 163–165 (2011).
Spencer, C., Hechter, E., Vukcevic, D. & Donnelly, P. Quantifying the underestimation of relative risks from genome-wide association studies. PLoS Genet. 7, e1001337 (2011).
Cirulli, E. T. & Goldstein, D. B. Uncovering the roles of rare variants in common disease through whole-genome sequencing. Nature Rev. Genet. 11, 415–425 (2010).
Maher, B. Personal genomes: the case of the missing heritability. Nature 456, 18–21 (2008).
Tuzun, E. et al. Fine-scale structural variation of the human genome. Nature Genet. 37, 727–732 (2005).
McCarroll, S. A. Extending genome-wide association studies to copy-number variation. Hum. Mol. Genet. 17, R135–R142 (2008).
Chung, C. C. & Chanock, S. J. Current status of genome-wide association studies in cancer. Hum. Genet. 130, 59–78 (2011).
Travers, M. E. & McCarthy, M. I. Type 2 diabetes and obesity: genomics and the clinic. Hum. Genet. 130, 41–58 (2011).
Mohlke, K. L. & Scott, L. J. What will diabetes genomes tell us? Curr. Diab. Rep. 12, 643–650 (2012).
Servin, B. & Stephens, M. Imputation-based analysis of association studies: candidate regions and quantitative traits. PLoS Genet. 3, e114 (2007).
Hindorff, L. A. et al. Potential etiologic and functional implications of genome-wide association loci for human diseases and traits. Proc. Natl Acad. Sci. USA 106, 9362–9367 (2009). An overview of functional annotations for GWAS-defined SNPs in the first 3 years of experience is presented here, and it demonstrates that a high proportion (>80%) of associations fall in non-coding regions.
Girirajan, S. et al. Phenotypic heterogeneity of genomic disorders and rare copy-number variants. N. Engl. J. Med. 367, 1321–1331 (2012).
He, Y., Hoskins, J. M. & McLeod, H. L. Copy number variants in pharmacogenetic genes. Trends Mol. Med. 17, 244–251 (2011).
Ernst, J. et al. Mapping and analysis of chromatin state dynamics in nine human cell types. Nature 473, 43–49 (2011).
The ENCODE Project Consortium. An integrated encyclopedia of DNA elements in the human genome. Nature 489, 57–74 (2012). This is the lead paper of 30 coordinated papers describing ENCODE findings of functional DNA sequences related to transcription, transcription factor association, chromatin structure and histone modification.
Moffatt, M. F. et al. Genetic variants regulating ORMDL3 expression contribute to the risk of childhood asthma. Nature 448, 470–473 (2007).
Zhang, Y., Moffatt, M. F. & Cookson, W. O. Genetic and genomic approaches to asthma: new insights for the origins. Curr. Opin. Pulm. Med. 18, 6–13 (2012).
Ober, C. & Yao, T. C. The genetics of asthma and allergic disease: a 21st century perspective. Immunol. Rev. 242, 10–30 (2011).
Duerr, R. H. et al. A genome-wide association study identifies IL23R as an inflammatory bowel disease gene. Science 314, 1461–1463 (2006).
Sarin, R., Wu, X. & Abraham, C. Inflammatory disease protective R381Q IL23 receptor polymorphism results in decreased primary CD4+ and CD8+ human T-cell functional responses. Proc. Natl Acad. Sci. USA 108, 9560–9565 (2011).
Craig, D. W. et al. Assessing and managing risk when sharing aggregate genetic variant data. Nature Rev. Genet. 12, 730–736 (2011).
Kraft, P. et al. Beyond odds ratios — communicating disease risk based on genetic profiles. Nature Rev. Genet. 10, 264–269 (2009).
Cornelis, M. C. et al. Joint effects of common genetic variants on the risk for type 2 diabetes in U.S. men and women of European ancestry. Ann. Intern. Med. 150, 541–550 (2009).
van der Net, J. B., Janssens, A. C., Sijbrands, E. J. & Steyerberg, E. W. Value of genetic profiling for the prediction of coronary heart disease. Am. Heart J. 158, 105–110 (2009).
Ware J. H. The limitations of risk factors as prognostic tools. N. Engl. J. Med. 355, 2615–2617 (2006).
Kraft, P. & Hunter, D. J. Genetic risk prediction—are we there yet? N. Engl. J. Med. 360, 1701–1703 (2009).
Wray, N. R., Goddard, M. E. & Visscher, P. M. Prediction of individual genetic risk of complex disease. Curr. Opin. Genet. Dev. 18, 257–263 (2008).
Risch N. Assessing the role of HLA-linked and unlinked determinants of disease. Am. J. Hum. Genet. 40, 1–14 (1987).
Polychronakos, C. & Li, Q. Understanding type 1 diabetes through genetics: advances and prospects. Nature Rev. Genet. 12, 781–792 (2011). This is a Review of allelic architecture of genetic susceptibility to type 1 diabetes, based on GWASs, fine mapping and functional studies, and the potential for genetic prediction of T1D risk.
Chatenoud, L., Warncke, K. & Ziegler, A. G. Clinical immunologic interventions for the treatment of type 1 diabetes. Cold Spring Harb. Perspect. Med. 2, a007716 (2012).
Bradfield, J. P. et al. A genome-wide meta-analysis of six type 1 diabetes cohorts identifies multiple associated loci. PLoS Genet. 7, e1002293 (2011).
Jostins, L. & Barrett, J. C. Genetic risk prediction in complex disease. Hum. Mol. Genet. 20, R182–R188 (2011).
Clayton, D. G. Prediction and interaction in complex disease genetics: experience in type 1 diabetes. PLoS Genet. 5, e1000540 (2009).
Bingley, P. J. Clinical applications of diabetes antibody testing. J. Clin. Endocrinol. Metab. 95, 25–33 (2010).
Gallagher, M. P., Goland, R. S. & Greenbaum, C. J. Making progress: preserving β cells in type 1 diabetes. Ann. NY Acad. Sci. 1234, 119–134 (2011).
Dunlop, M. G. et al. Cumulative impact of common genetic variants and other risk factors on colorectal cancer risk in 42 103 individuals. Gut 62, 871–881 (2013).
Kathiresan, S. et al. Polymorphisms associated with cholesterol and risk of cardiovascular events. N. Engl. J. Med. 358, 1240–1249 (2008).
Shields, B. M. et al. Maturity-onset diabetes of the young (MODY): how many cases are we missing? Diabetologia 53, 2504–2508 (2010).
Shepherd, M. et al. Predictive genetic testing in maturity-onset diabetes of the young (MODY). Diabet Med. 18, 417–421 (2001).
Owen, K. R. et al. Assessment of high-sensitivity C-reactive protein levels as diagnostic discriminator of maturity-onset diabetes of the young due to HNF1A mutations. Diabetes Care 33, 1919–1924 (2010).
Reiner, A. P. et al. Polymorphisms of the HNF1A gene encoding hepatocyte nuclear factor-1 α are associated with C-reactive protein. Am. J. Hum. Genet. 82, 1193–1201 (2008). One of two initial GWASs demonstrating association between HNF1A and C-reactive protein levels is presented here.
Toniatti, C., Demartis, A., Monaci, P., Nicosia, A. & Ciliberto, G. Synergistic trans-activation of the human C-reactive protein promoter by transcription factor HNF-1 binding at two distinct sites. EMBO J. 9, 4467–4475 (1990).
Thanabalasingham, G. et al. A large multi-centre European study validates high-sensitivity C-reactive protein (hsCRP) as a clinical biomarker for the diagnosis of diabetes subtypes. Diabetologia 54, 2801–2810 (2011).
Fellay, J. et al. ITPA gene variants protect against anaemia in patients treated for chronic hepatitis C. Nature 464, 405–408 (2010). This is the first GWAS to demonstrate association between ITPA and ribavirin-induced anaemia.
Asselah, T., Pasmant, E. & Lyoumi, S. Unraveling the genetic predisposition of ribavirin-induced anaemia. J. Hepatol. 53, 971–973 (2010).
Thompson, A. J. et al. Variants in the ITPA gene protect against ribavirin-induced hemolytic anemia and decrease the need for ribavirin dose reduction. Gastroenterology 139, 1181–1189 (2010).
Hitomi, Y. et al. Inosine triphosphate protects against ribavirin-induced adenosine triphosphate loss by adenylosuccinate synthase function. Gastroenterology. 140, 1314–1321 (2011). This functional study demonstrates that ITP substitutes for GTP for use by human adenylosuccinate synthase, thereby bypassing the ribavirin-induced depletion of GTP and subsequent haemolysis.
Carroll, M. D., Kit, B. K., Lacher, D. A., Shero, S. T. & Mussolino, M. E. Trends in lipids and lipoproteins in US adults, 1988–2010. JAMA 308, 1545–1554 (2012).
Thompson, P. D., Clarkson, P. & Karas, R. H. Statin-associated myopathy. JAMA 289, 1681–1690 (2003).
Wilke, R. A. et al. The clinical pharmacogenomics implementation consortium: CPIC guideline for SLCO1B1 and simvastatin-induced myopathy. Clin. Pharmacol. Ther. 92, 112–117 (2010). This is a review of the impact of SLCO1B1 variants on patient response to statins and consensus guidelines for reducing the risk of simvastatin myopathy in variant carriers.
Mammen, A. L. & Amato, A. A. Statin myopathy: a review of recent progress. Curr. Opin. Rheumatol. 22, 644–650 (2010).
SEARCH Collaborative Group. SLCO1B1 variants and statin-induced myopathy—a genomewide study. N. Engl. J. Med. 359, 789–799 (2008).
Ghatak, A., Faheem, O. & Thompson, P. D. The genetics of statin-induced myopathy. Atherosclerosis 210, 337–343 (2010).
Niemi, M., Pasanen, M. K. & Neuvonen, P. J. Organic anion transporting polypeptide 1B1: a genetically polymorphic transporter of major importance for hepatic drug uptake. Pharmacol. Rev. 63, 157–181 (2011).
Voora, D. et al. The SLCO1B1*5 genetic variant is associated with statin-induced side effects. J. Am. Coll. Cardiol 54, 1609–1616 (2009).
Maggo, S. D., Kennedy, M. A. & Clark, D. W. Clinical implications of pharmacogenetic variation on the effects of statins. Drug Saf. 34, 1–19 (2011).
Treviño, L. R. et al. Germline genetic variation in an organic anion transporter polypeptide associated with methotrexate pharmacokinetics and clinical effects. J. Clin. Oncol. 27, 5972–5978 (2009).
Ramsey, L. B. et al. Rare versus common variants in pharmacogenetics: SLCO1B1 variation and methotrexate disposition. Genome Res. 22, 1–8 (2012).
Johnson, A. D. et al. Genome-wide association meta-analysis for total serum bilirubin levels. Hum. Mol. Genet. 18, 2700–2710 (2009).
Kerns, S. L. et al. A 2-stage genome-wide association study to identify single nucleotide polymorphisms associated with development of erectile dysfunction following radiation therapy for prostate cancer. Int. J. Radiat. Oncol. Biol. Phys. 85, e21–e28 (2013).
Malhotra, A. K. et al. Association between common variants near the melanocortin 4 receptor gene and severe antipsychotic drug-induced weight gain. Arch. Gen. Psych. 69, 904–912 (2012).
Comen, E. et al. Discriminatory accuracy and potential clinical utility of genomic profiling for breast cancer risk in BRCA-negative women. Breast Cancer Res. Treat. 127, 479–487 (2011).
Nguyen, T. V. & Eisman, J. A. Genetics and the individualized prediction of fracture. Curr. Osteoporos Rep. 10, 236–244 (2012).
Knowles, J. W. et al. Randomized trial of personal genomics for preventive cardiology: design and challenges. Circ. Cardiovasc. Genet. 5, 368–376 (2012).
Kao, W. H. et al. Family investigation of nephropathy and diabetes research group. MYH9 is associated with nondiabetic end-stage renal disease in African Americans. Nature Genet. 40, 1185–1192 (2008).
Tzur, S. et al. Missense mutations in the APOL1 gene are highly associated with end stage kidney disease risk previously attributed to the MYH9 gene. Hum. Genet. 128, 345–350 (2010).
Guedj, M. et al. A refined molecular taxonomy of breast cancer. Oncogene 31, 1196–1206 (2012).
Nevins, J. R. Pathway-based classification of lung cancer: a strategy to guide therapeutic selection. Proc. Am. Thorac Soc. 8, 180–182 (2011).
Vermeire, S. Towards a novel molecular classification of IBD. Dig. Dis. 30, 425–427 (2012).
Troutbeck, R., Al-Qureshi, S. & Guymer, R. H. Therapeutic targeting of the complement system in age-related macular degeneration: a review. Clin. Experiment Ophthalmol. 40, 18–26 (2012).
Baldwin, R. M. et al. A genome-wide association study identifies novel loci for paclitaxel-induced sensory peripheral neuropathy in CALGB 40101. Clin. Cancer Res. 18, 5099–5109 (2012).
Park, B. L. et al. Genome-wide association study of aspirin-exacerbated respiratory disease in a Korean population. Hum. Genet. 132, 313–321 (2013).
Manolio, T. A. et al. Implementing genomic medicine in the clinic: the future is here. Genet. Med. 15, 258–267 (2013). This is a description of actively implemented genomic medicine programs at multiple US institutions, including common challenges, infrastructure and research needs. It outlines an implementation framework for investigating and introducing similar programmes elsewhere.
Crews, K. R., Hicks, J. K., Pui, C. H., Relling, M. V. & Evans, W. E. Pharmacogenomics and individualized medicine: translating science into practice. Clin. Pharmacol. Ther. 92, 467–475 (2012).
Manolio, T. A. & Green, E. D. Genomics reaches the clinic: from basic discoveries to clinical impact. Cell 147, 14–16 (2011).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Competing interests
The author declares no competing financial interests.
Related links
FURTHER INFORMATION
Glossary
- Heritability
-
The proportion of the total phenotypic variation in a trait that can be attributed to genetic effects.
- Odds ratios
-
A measure of effect size. Defined as the ratio of the odds (that is, the probability of disease divided by 1 minus the probability) of a disease being observed in one group of genotypes and the odds of a disease being observed in another group.
- Minor allele frequencies
-
(MAFs). The frequency of the less common allele of a polymorphism. It has a value between 0 and 0.5 and can vary between populations.
- Negative selection
-
A form of natural selection that suppresses alternative genetic variants in favour of the ancestral type.
- Enhancer elements
-
A regulatory DNA element that usually binds several transcription factors and can activate transcription from a promoter at great distance and in an orientation-independent manner.
- Linkage disequilibrium
-
(LD). The nonrandom association of alleles at two or more loci. The pattern of LD in a given genomic region reflects the history of natural selection, mutation, recombination, genetic drift and other demographic and evolutionary forces.
- Expression quantitative trait locus
-
(eQTL). A locus at which genetic allelic variation is associated with variation in gene expression levels.
- Sensitivity
-
The proportion of true positives that are accurately identified as such (for example, the percentage of cases that are diagnosed using a questionnaire). A sensitivity of 100% means that all cases are correctly identified.
- Specificity
-
The proportion of true negatives that are classified as negatives. For example, a diagnostic test with a specificity of 100% means that all healthy people have been identified as healthy.
- Positive predictive value
-
(PPV). The probability that an individual who tests positive truly has the condition (true positive). A measure of how well a screening or diagnostic test distinguishes true positives from false positives that do not have the disease.
- Major histocompatibility complex
-
(MHC). A large complex of tightly linked genes on human chromosome 6, many of which are involved in the immune response. The human leukocyte antigen genes are located within the MHC.
- Missense variant
-
A variant that results in the substitution of an amino acid in a protein.
- Splice variant
-
A variant, usually found at the intron–exon boundary, that alters the splicing of an exon to its surrounding exons.
- Rhabdomyolysis
-
The rapid breakdown of skeletal muscle tissue due to injury, drugs, toxins or metabolic disease. This leads to electrolyte release and high concentrations of myoglobin in plasma and urine that are toxic to the kidneys and can cause renal failure and death.
- Methotrexate
-
A folic acid antagonist used as a chemotherapeutic and immunosuppressant drug.
- Decision support tools
-
Software tools providing intelligently filtered and appropriately timed medical information specific to a given patient to aid in clinical decision making at the point of care. Examples include computerized alerts of potential adverse effects of a proposed treatment or reminders of overdue screening tests.
Rights and permissions
About this article
Cite this article
Manolio, T. Bringing genome-wide association findings into clinical use. Nat Rev Genet 14, 549–558 (2013). https://doi.org/10.1038/nrg3523
Published:
Issue Date:
DOI: https://doi.org/10.1038/nrg3523
This article is cited by
-
Automatic block-wise genotype-phenotype association detection based on hidden Markov model
BMC Bioinformatics (2023)
-
Processing genome-wide association studies within a repository of heterogeneous genomic datasets
BMC Genomic Data (2023)
-
Gene-environment interaction explains a part of missing heritability in human body mass index
Communications Biology (2023)
-
Precision medicine in systemic lupus erythematosus
Nature Reviews Rheumatology (2023)
-
Comprehensive variant discovery in the era of complete human reference genomes
Nature Methods (2023)