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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Rreb1+
wild type
MGI:3611877
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Rreb1em1Tcp/Rreb1+ C57BL/6J-Rreb1em1Tcp/Tcp MGI:7339281
ht2
Rreb1tm1b(EUCOMM)Wtsi/Rreb1+ C57BL/6N-Rreb1tm1b(EUCOMM)Wtsi/Wtsi MGI:6263394
ht3
Rreb1Sao/Rreb1+ NOD.Cg-Rreb1Sao/Slac MGI:7579107


Genotype
MGI:7339281
ht1
Allelic
Composition
Rreb1em1Tcp/Rreb1+
Genetic
Background
C57BL/6J-Rreb1em1Tcp/Tcp
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rreb1em1Tcp mutation (0 available); any Rreb1 mutation (165 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• cross-sectional area of cardiomyocytes is increased more than 2-fold and is present in younger mice
• heart weight to tibial length is reduced at 6 months of age
• markers of the fetal gene program and cardiac hypertrophy are upregulated in 6-month-old mice
• mice develop left ventricular hypertrophy at 6 months of age with pronounced cardiac wall thickening
• mice show an age-related decrease in fractional shortening and % fractional shortening at 6 moths of age but not in younger mice
• hypertrophic cardiomyopathy

cellular
• mouse embryonic fibroblasts exhibit increased proliferation following stimulation with fetal bovine serum

craniofacial
• mice have a wider blunted nose
• mice have a wider blunted nose

growth/size/body
• markers of the fetal gene program and cardiac hypertrophy are upregulated in 6-month-old mice
• mice develop left ventricular hypertrophy at 6 months of age with pronounced cardiac wall thickening
• mice have a wider blunted nose
• mice have a wider blunted nose
• mice are slightly smaller, with normal weight but reduced length
• mice are slightly shorter in length

muscle
• cross-sectional area of cardiomyocytes is increased more than 2-fold and is present in younger mice
• mice develop left ventricular hypertrophy at 6 months of age with pronounced cardiac wall thickening
• mice show an age-related decrease in fractional shortening and % fractional shortening at 6 moths of age but not in younger mice
• hypertrophic cardiomyopathy

vision/eye
• orbital hypertelorism

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
RASopathy DOID:0080690 J:296982




Genotype
MGI:6263394
ht2
Allelic
Composition
Rreb1tm1b(EUCOMM)Wtsi/Rreb1+
Genetic
Background
C57BL/6N-Rreb1tm1b(EUCOMM)Wtsi/Wtsi
Cell Lines EPD0486_4_C04
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rreb1tm1b(EUCOMM)Wtsi mutation (3 available); any Rreb1 mutation (165 available)
Data Sources
phenotype observed in females
phenotype observed in males
N normal phenotype
adipose tissue

growth/size/body

hematopoietic system

homeostasis/metabolism

immune system




Genotype
MGI:7579107
ht3
Allelic
Composition
Rreb1Sao/Rreb1+
Genetic
Background
NOD.Cg-Rreb1Sao/Slac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rreb1Sao mutation (0 available); any Rreb1 mutation (165 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• heterozygotes display apoptotic Purkinje cell degeneration beginning at 6 months of age and approximately 72% of Purkinje cells survive at 1 year





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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
01/06/2026
MGI 6.24
The Jackson Laboratory