1.1. What is OMIM? Online Mendelian Inheritance in Man (OMIM^®) is a continuously updated catalog of human genes and genetic disorders and traits, with particular focus on the molecular relationship between genetic variation and phenotypic expression.

Each OMIM entry is assigned a unique six-digit number whose first digit indicates whether its inheritance is autosomal, X-linked, Y-linked or mitochondrial: 1, autosomal loci or phenotypes (entries created before May 15, 1994); 2, autosomal loci or phenotypes (entries created before May 15, 1994); 3, X-linked loci or ...

Online Mendelian Inheritance In Man (OMIM) is a public database of bibliographic information about human genes and genetic disorders.

OMIM is a secondary database consists of data derived from the analysis of primary data such as sequences, active site residue of proteins and so on.