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Online Mendelian Inheritance in Man (OMIM) 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 and provides references for further research and tools for genomic analysis of a catalogued gene.[1] OMIM is one of the databases housed in the U.S. National Center for Biotechnology Information (NCBI) and included in its search menus.[2]

Versions Edit

Mendelian Inheritance in Man was started in the early 1960s[3] and is available as a book currently in its 12th edition.[4] The online version, OMIM, has been available since 1987,[5] moved to the World Wide Web by NCBI in 1995,[3] and in 2004 contained more than 15,000 records.[1]

Collection processEdit

The information in this database is collected and processed under the leadership of Dr. Victor A. McKusick at Johns Hopkins University, assisted by 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 codeEdit

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

If the initial digit is 1, the trait is deemed autosomal dominant; if 2, autosomal recessive; if 3, X-linked. Wherever a trait defined in this dictionary has a MIM number, the number from the 12th edition of MIM, is given in square brackets with or without an asterisk (asterisks indicate that the mode of inheritance is known; a number symbol (#) before an entry number means that the phenotype can be caused by mutation in any of two or more genes) as appropriate e.g., Pelizaeus-Merzbacher disease [MIM #312080] is an X-linked recessive disorder.

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)

These codes have been used in the medical literature to provide a unified index to genetic diseases.[6]

See alsoEdit


  • Table from the OMIM FAQ
  • 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 Edit

Databases supported by Bioinformatic Harvester
UniProt | SOURCE | SMART | SOSUI | PSORT | HomoloGene | GFP-cDNA | IPI | OMIM
NCBI-BLAST | Genome-Browser | Ensembl | RZPD | STRING | iHOP | Entrez

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