Cited by 291Genomics and Rare DiseasesMetabolism and Genetic DisordersConnective tissue disorders research

The National Institutes of Health Undiagnosed Diseases Program: insights into rare diseases

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Gahl, William A., Markello, Thomas C., Toro, Camilo, Fajardo, Karin Fuentes, Sincan, Murat, Gill, Fred, Carlson-Donohoe, Hannah, Gropman, Andrea +14 more·2012·Genetics in Medicine

Abstract

Purpose This report describes the National Institutes of Health Undiagnosed Diseases Program, details the Program's application of genomic technology to establish diagnoses, and details the Program's success rate during its first 2 years.Methods Each accepted study participant was extensively phenotyped. A subset of participants and selected family members (29 patients and 78 unaffected family members) was subjected to an integrated set of genomic analyses including high-density single-nucleotide polymorphism arrays and whole exome or genome analysis.Results Of 1,191 medical records reviewed, 326 patients were accepted and 160 were admitted directly to the National Institutes of Health Clinical Center on the Undiagnosed Diseases Program service. Of those, 47% were children, 55% were females, and 53% had neurologic disorders. Diagnoses were reached on 39 participants (24%) on clinical, biochemical, pathologic, or molecular grounds; 21 diagnoses involved rare or ultra-rare diseases. Three disorders were diagnosed based on single-nucleotide polymorphism array analysis and three others using whole exome sequencing and filtering of variants. Two new disorders were discovered. Analysis of the single-nucleotide polymorphism array study cohort revealed that large stretches of homozygosity were more common in affected participants relative to controls.Conclusion The National Institutes of Health Undiagnosed Diseases Program addresses an unmet need, i.e., the diagnosis of patients with complex, multisystem disorders. It may serve as a model for the clinical application of emerging genomic technologies and is providing insights into the characteristics of diseases that remain undiagnosed after extensive clinical workup.

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Authors
Gahl, W. A., Markello, T. C., Toro, C., Fajardo, K. F., Sincan, M., Gill, F., Carlson-Donohoe, H., Gropman, A., Pierson, T. M., Golas, G., Wolfe, L., Groden, C., Godfrey, R., Nehrebecky, M., Wahl, C., Landis, D. M. D., Yang, S., Madeo, A., Mullikin, J. C., Boerkoel, C. F., Tifft, C. J., & Adams, D.
Affiliations
  • National Institutes of Health (US)
  • National Institutes of Health Clinical Center (US)
Corresponding author
Adams, David
Venue
Genetics in Medicine
Publisher
Elsevier BV
Published
2012-01
Volume
14
Issue
1
Pages
51-59
ISSN
1098-3600 (ISSN-L)
OpenAlex
W2025464337
Cited by
291
References
30
Citations by year
2026: 11 · 2025: 6 · 2024: 17 · 2023: 22 · 2022: 19 · 2021: 12 · 2020: 15 · 2019: 20 · 2018: 23 · 2017: 23 · 2016: 31 · 2015: 27 · 2014: 27 · 2013: 23 · 2012: 14
FWCI
17.48
Type
journal article
Language
en
Open access
Locations
  • Genetics in Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (Z99 HG999999)
  • National Human Genome Research Institute (ZIAHG000215, ZIDHG200352)
  • NIH Office of the Director
  • National Institute of Neurological Disorders and Stroke
  • NIH Clinical Center
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Connective tissue disorders research
Keywords
rare diseases, ultra-rare diseases, diagnostic yield, genomic diagnostics, single nucleotide polymorphism array, exome sequencing, homozygosity, neurological disorders, multisystem disease, phenotyping
MeSH terms
Adolescent, Adult, Aged, Aged, 80 and over, Child, Child, Preschool, Clinical Protocols, Female, Government Programs, Homozygote, Humans, Infant, Male, Middle Aged, National Health Programs, National Institutes of Health (U.S.), Phenotype, United States, Polymorphism, Single Nucleotide, Rare Diseases, Biomedical Research, Young Adult, DNA Copy Number Variations, Exome

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