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Encyclopedia > OMIM

The Mendelian Inheritance in Man project is a database that catalogues all the known diseases with a genetic component, and - when possible - links them to the relevant genes in the human genome. It is available as a book titled Mendelian Inheritance in Man (MIM), which is currently in its 12th edition.

The online version is called Online Mendelian Inheritance in Man, which can be accessed with the Entrez database searcher of the National Library of Medicine.

OMIM™ and Online Mendelian Inheritance in Man™ are trademarks of the Johns Hopkins University.


Collection process

The information in this database is collected and processed under the leadership of Dr. Victor A. McKusick at Johns Hopkins University, assisted by and a team of science writers and editors. Relevant articles are identified, discussed and written up in the relevant entries in the MIM database

The MIM code

Every disease and gene is assigned a six digit number of which the first number classifies the method of inheritance.

First Digit Range of MIM codes Method of inheritance
1 100000-199999 Autosomal loci or phenotypes (created before May 15, 1994)
2 200000-299999 Autosomal loci or phenotypes (created before May 15, 1994)
3 300000-399999 X-linked loci or phenotypes
4 400000-499999 Y-linked loci or phenotypes
5 500000-599999 Mitochondrial loci or phenotypes
6 600000- Autosomal loci or phenotypes (created after May 15, 1994)


  • Table from the OMIM FAQ (http://www.ncbi.nlm.nih.gov/Omim/omimfaq.html)
  • McKusick VA. Mendelian Inheritance in Man; A Catalog of Human Genes and Genetic Disorders. Baltimore, MD: The Johns Hopkins University Press, 1998. ISBN 0-8018-5742-2.

External link

  • Online Mendelian Inheritance in Man (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=OMIM) (to search OMIM)

  Results from FactBites:
OMIM FAQ (3174 words)
OMIM focuses primarily on inherited, or heritable, genetic diseases.
OMIM is based upon the text Mendelian Inheritance in Man, authored and edited by Dr. Victor A. McKusick and a team of science writers and editors at Johns Hopkins University and elsewhere.
The OMIM database covers approximately 4000 genetic conditions, but this number is based on the particular scope of OMIM, which are disorders inherited in a Mendelian manner.
Searching OMIM (2689 words)
OMIM records link to the citations and abstracts of the sources for this research.
Since OMIM was the source for the genes, traits, and disorders on each chromosome of the Human Genome Landmarks poster, it is a key resource for finding more information about what is listed on the poster.
For example, the OMIM entry for the HFE gene is more than 50 printed pages long, while an OMIM entry for another condition that researchers know little about may only be 1 or 2 pages long.
  More results at FactBites »



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