MGI-Mouse Phenotypes, Alleles & Disease Models

Phenotypes & Mutant Alleles
The Phenotypes/Alleles project in MGI enables access to spontaneous, induced, and genetically-engineered mutations and their strain-specific phenotypes.

Homozygote for the Lep^ob mutation with normal littermate.

Access Data

Search for mutations or QTL based on phenotype, human disease, mutation type, gene, or genome location.: Phenotypes, Alleles & Disease Models Query
Search for phenotype and disease associations by human and mouse genes and genome regions.: Human - Mouse: Disease Connection
Search for a phenotype term to find relevant mutant genotypes.: Mammalian Phenotype (MP) Browser
Browse for a human disease term to find mouse models.: Disease Ontology (DO) Browser
Search or browse for a human phenotype term to find relevant human diseases with those phenotypes.: Human Phenotype (HPO) Browser
Search for candidate genes for a given phenotype within a genomic interval.: Genes & Markers Query
Input a list of genes and retrieve associated alleles and phenotypes.: Batch Query
Submit data for alleles, mutants, transgenes, strains, or phenotypes.: Allele, Strain & Phenotype Submission Form
View guides to proper naming of alleles and mutations.: Quick Guide to Allele Nomenclature; Complete Guide to Nomenclature

FAQs

How do I...: .. find mutations in a specific gene? FAQ; .. find mouse models for a human disease or condition? FAQ; .. find mutations that cause a specific combination of phenotypes? FAQ; .. find all of one kind of allele (e.g. cre transgenes, LoxP/Frt-flanked alleles, etc.)? FAQ

Contributing Projects: Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
Citing These Resources Funding Information Warranty Disclaimer, Privacy Notice, Licensing, & Copyright Send questions and comments to User Support.	last database update 10/21/2025 MGI 6.24