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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Ush2atm1Tili
targeted mutation 1, Tiansen Li
MGI:3702040
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Ush2atm1Tili/Ush2atm1Tili involves: 129S4/SvJae * C57BL/6 MGI:3702269
cx2
Cdh23Ahl+/Cdh23Ahl+
Ush2atm1Tili/Ush2atm1Tili
involves: 129S4/SvJae * C57BL/6 * CAST/EiJ * CBA/CaJ MGI:3702270


Genotype
MGI:3702269
hm1
Allelic
Composition
Ush2atm1Tili/Ush2atm1Tili
Genetic
Background
involves: 129S4/SvJae * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ush2atm1Tili mutation (0 available); any Ush2a mutation (290 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Retinal degeneration in the Ush2atm1Tili/Ush2atm1Tili mouse

vision/eye
• a gradual thinning of the photoreceptor outer layer is observed with age
• up to 10 months of age, photoreceptor morphology is normal, but photoreceptors are under stress and are in a pre-degenerating state
• shortening of inner/outer segments is seen with age
• shortening of inner/outer segments is seen with age
• at 20 months of age, outer segments become very short and disorganized
• as mice age, signs of photoreceptor degeneration are observed
• at 20 months of age, >50% of photoreceptors are lost
• cone photoreceptors undergo degeneration by 20 months of age
• by 20 months of age, a- and b-waves are reduced by >60% compared to wild-type controls

nervous system
• widespread loss of outer hair cells in the basal turn is observed
• up to 10 months of age, photoreceptor morphology is normal, but photoreceptors are under stress and are in a pre-degenerating state
• shortening of inner/outer segments is seen with age
• shortening of inner/outer segments is seen with age
• at 20 months of age, outer segments become very short and disorganized
• as mice age, signs of photoreceptor degeneration are observed
• at 20 months of age, >50% of photoreceptors are lost
• cone photoreceptors undergo degeneration by 20 months of age

hearing/vestibular/ear
• widespread loss of outer hair cells in the basal turn is observed
• at 4 months of age, mice show normal cochlear function at low frequency but an elevated threshold at higher frequencies; there was no progression when tested at 7 months of age

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
Usher syndrome type 2A DOID:0110838 OMIM:276901
J:118927




Genotype
MGI:3702270
cx2
Allelic
Composition
Cdh23Ahl+/Cdh23Ahl+
Ush2atm1Tili/Ush2atm1Tili
Genetic
Background
involves: 129S4/SvJae * C57BL/6 * CAST/EiJ * CBA/CaJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdh23Ahl+ mutation (2 available); any Cdh23 mutation (280 available)
Ush2atm1Tili mutation (0 available); any Ush2a mutation (290 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hearing/vestibular/ear
• at 4 months of age, mice show normal cochlear function at low frequency but an elevated threshold at higher frequencies; there was no progression when tested at 7 months of age





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)
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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory