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Genet Med. 2016 Aug;18(8):788-95. doi: 10.1038/gim.2015.161. Epub 2015 Dec 10.

Gene discovery for Mendelian conditions via social networking: de novo variants in KDM1A cause developmental delay and distinctive facial features.

Author information

  • 1Department of Pediatrics, University of Washington, Seattle, Washington, USA.
  • 2Department of Political Science, University of California, Berkeley, California, USA.
  • 3Citizen scientist, San Francisco, California, USA.
  • 4Treuman Katz Center for Pediatric Bioethics, Seattle Children's Research Institute, Seattle, Washington, USA.
  • 5Department of Genome Sciences, University of Washington, Seattle, Washington, USA.
  • 6Institute for Medical Genetics, University of Zurich, Zurich, Switzerland.
  • 7Department of Pediatrics, University of Colorado, Aurora, Colorado, USA.
  • 8Department of Neurology, Children's Hospital of the University of Zurich, Zurich, Switzerland.
  • 9Division of Genetic Medicine, Seattle Children's Hospital, Seattle, Washington, USA.

Abstract

PURPOSE:

The pace of Mendelian gene discovery is slowed by the "n-of-1 problem"-the difficulty of establishing the causality of a putatively pathogenic variant in a single person or family. Identification of an unrelated person with an overlapping phenotype and suspected pathogenic variant in the same gene can overcome this barrier, but it is often impeded by lack of a convenient or widely available way to share data on candidate variants/genes among families, clinicians, and researchers.

METHODS:

Social networking among families, clinicians, and researchers was used to identify three children with variants of unknown significance in KDM1A and similar phenotypes.

RESULTS:

De novo variants in KDM1A underlie a new syndrome characterized by developmental delay and distinctive facial features.

CONCLUSION:

Social networking is a potentially powerful strategy to discover genes for rare Mendelian conditions, particularly those with nonspecific phenotypic features. To facilitate the efforts of families to share phenotypic and genomic information with each other, clinicians, and researchers, we developed the Repository for Mendelian Genomics Family Portal (RMD-FP; http://uwcmg.org/#/family). Design and development of MyGene2 (http://www.mygene2.org), a Web-based tool that enables families, clinicians, and researchers to search for gene matches based on analysis of phenotype and exome data deposited into the RMD-FP, is under way.Genet Med 18 8, 788-795.

PMID:
26656649
PMCID:
PMC4902791
DOI:
10.1038/gim.2015.161
[PubMed - in process]
Free PMC Article
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