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OMIM (Online Mendelian Inheritance in Man) - Synopsis

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Online Mendelian Inheritance in Man® (OMIM®) was developed and is maintained by the McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins School of Medicine. It is made available online by the National Center for Biotechnology Information (NCBI) at the U.S. National Library of Medicine (NLM).

OMIM was developed as a catalog of Mendelian traits and disorders, with a focus on the relationship between phenotype and genotype.

OMIM is a comprehensive guide to human genes and genetic phenotypes with full-text, referenced overviews for all mendelian disorders and over 16,000 genes.

OMIM is primarily intended for use by:

  • physicians,
  • genetics researchers,
  • advanced students in science and medicine, and
  • other genetic disorders professionals.

Update Frequency
OMIM is updated daily.

Metathesaurus Update Frequency
OMIM is updated in each release.

Sites Consulted

  1. OMIM Home [Internet]. Bethesda (MD): National Library of Medicine (US), National Center for Biotechnology Information; [cited 2009 Oct 16].  Available from: