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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
rd21
retinal degeneration 21
MGI:5906381
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
rd21/rd21 Not Specified MGI:5906382


Genotype
MGI:5906382
hm1
Allelic
Composition
rd21/rd21
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
rd21 mutation (1 available); any rd21 mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• attenuated retinal vessels at 5 months of age
• by 5 months of age there is a loss of 20-30% of photoreceptors and rapid loss after that with no photoreceptors found at 7 months of age
• homozygotes develop late onset retinal degeneration with rapid progression, which leads to retinal detachment
• presenting at approximately 7 months of age
• dark-adapted ERG responses begin to decrease after 4 months of age while the loss of light-adapted ERG responses is slightly delayed beyond that, but by 8 months there are no ERG responses
• although the cone ERG response are approximately normal at 5 months of age there is no rod or cone ERG response at 8 months of age
• at 4 months of age the rod ERG is near normal, but at 5 months of age there is a lower ERG a-wave and almost normal b-wave, and at 8 months of age there is no ERG a-wave or b-wave
• no cone or rod ERG waveform is detectable at 8 months of age

nervous system
• by 5 months of age there is a loss of 20-30% of photoreceptors and rapid loss after that with no photoreceptors found at 7 months of age

cardiovascular system
• attenuated retinal vessels at 5 months of age

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
retinal degeneration DOID:8466 J:242762





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
11/12/2024
MGI 6.24
The Jackson Laboratory