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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Rarg+
wild type
MGI:2431795
Summary 7 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Rargtm4Ipc/Rarg+ involves: 129 MGI:2446553
ht2
Rargtm1Ipc/Rarg+ involves: 129 * C57BL/6 MGI:3817895
ht3
Rargtm1Ipc/Rarg+ involves: 129S2/SvPas * C57BL/6 MGI:3766013
cx4
Cdx1tm1Lhn/Cdx1tm1Lhn
Rargtm1Ipc/Rarg+
involves: 129 * C57BL/6 MGI:3817902
cx5
Raratm1Ipc/Raratm2Ipc
Rargtm1Ipc/Rarg+
involves: 129S2/SvPas MGI:6382285
cx6
Rarbtm1Mma/Rarb+
Rargtm1Ipc/Rarg+
involves: 129S2/SvPas * C57BL/6 MGI:3766086
cx7
Rarbtm1Mma/Rarbtm1Mma
Rargtm1Ipc/Rarg+
involves: 129S2/SvPas * C57BL/6 MGI:3766087


Genotype
MGI:2446553
ht1
Allelic
Composition
Rargtm4Ipc/Rarg+
Genetic
Background
involves: 129
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rargtm4Ipc mutation (0 available); any Rarg mutation (150 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
respiratory system
• ventral extension of the cricoid cartilage is present in 2 of 11 heterozygotes

skeleton
• ventral extension of the cricoid cartilage is present in 2 of 11 heterozygotes




Genotype
MGI:3817895
ht2
Allelic
Composition
Rargtm1Ipc/Rarg+
Genetic
Background
involves: 129 * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rargtm1Ipc mutation (2 available); any Rarg mutation (150 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• 8% of mice exhibit possible transformation of the C2 vertebrae with slightly narrower C1 neural arches and/or a short cartilaginous ectopic anterior arch of the atlas on C2
• 3% of mice have posterior spinous processes on V10 and sometimes V9




Genotype
MGI:3766013
ht3
Allelic
Composition
Rargtm1Ipc/Rarg+
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rargtm1Ipc mutation (2 available); any Rarg mutation (150 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• display a mild reduction of the palpebral aperture at E14.5




Genotype
MGI:3817902
cx4
Allelic
Composition
Cdx1tm1Lhn/Cdx1tm1Lhn
Rargtm1Ipc/Rarg+
Genetic
Background
involves: 129 * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdx1tm1Lhn mutation (0 available); any Cdx1 mutation (14 available)
Rargtm1Ipc mutation (2 available); any Rarg mutation (150 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• 9% of mice have anterior tubercles that have shifted posteriorly to the seventh cervical vertebrae
• 45% of mice exhibit possible transformation of the C2 vertebrae with slightly narrower C1 neural arches and/or a short cartilaginous ectopic anterior arch of the atlas on C2
• 36% of mice have thick neural arches in the vertebrae
• 27% of mice have posterior spinous processes on V10 and sometimes V9
• 73% of mice have neural arch fusions of V1 to V4




Genotype
MGI:6382285
cx5
Allelic
Composition
Raratm1Ipc/Raratm2Ipc
Rargtm1Ipc/Rarg+
Genetic
Background
involves: 129S2/SvPas
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Raratm1Ipc mutation (1 available); any Rara mutation (77 available)
Raratm2Ipc mutation (0 available); any Rara mutation (77 available)
Rargtm1Ipc mutation (2 available); any Rarg mutation (150 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• a third cartilaginous pillar is fused ventrally to the basisphenoid bone to form a cartilaginous medial wall to the cavum epiptericum unlike in wild-type mice
• shortened braincase and compression by intracranial ectopic cartilaginous and bony nodules in non-exencephalic mice at E18.5
• never closes
• frequently fused to the incus, which is continuous with a rostrally oriented cartilaginous or osseous rod
• dysplasia in some mice
• in some mice
• continuous with a rostrally oriented cartilaginous or osseous rod, which is frequently fused with the alisphenoid bone
• larger than in wild-type mice
• duplication of cartilaginous nasal septum
• in 3 of 11 mice
• in 2 of 11 mice
• fusion of cervical neural arches in all mice
• dyssymphysis of cervical neural arches in 10 of 11 mice
• C2 to C1 in 7 of 11 mice
• C6 to C5 in 8 of 11 mice
• C7 to C6 in 8 of 11 mice
• C7 to T1 of T2 in 3 of 11 mice

hearing/vestibular/ear
• continuous with a rostrally oriented cartilaginous or osseous rod, which is frequently fused with the alisphenoid bone
• larger than in wild-type mice

nervous system
• in two exencephalic mice at E18.5
• secondary to increased intracranial pressure caused by shortened braincase and compression by intracranial ectopic cartilaginous and bony nodules in 2 of 5 mice at E18.5
• failure of the rostral interhemispheric commissures (corpus callosum, hippocampal commissure and anterior commissure) in 2 of 5 mice at E18.5
• small in two exencephalic mice at E18.5
• in two exencephalic mice at E18.5
• in two exencephalic mice at E18.5
• ectopic cartilaginous and bony nodules at E18.5

vision/eye
• in 4 of 12 mice
• in 4 of 12 mice
• in all mice

endocrine/exocrine glands
• bilateral (1 of 5 mice) or unilateral (3 of 5 mice) cystic epithelial formations within the parenchyma
• bilateral in 1 of 5 mice, unilateral in 3 of 5 mice
• bilateral in 1 of 5 mice, unilateral in 3 of 5 mice
• bilateral in 1 of 5 mice, unilateral in 3 of 5 mice
• bilateral cystic dysplasia in 2 of 5 mice
• shortened in all mice
• in all mice

cardiovascular system
• in two exencephalic mice at E18.5

craniofacial
• a third cartilaginous pillar is fused ventrally to the basisphenoid bone to form a cartilaginous medial wall to the cavum epiptericum unlike in wild-type mice
• shortened braincase and compression by intracranial ectopic cartilaginous and bony nodules in non-exencephalic mice at E18.5
• never closes
• frequently fused to the incus, which is continuous with a rostrally oriented cartilaginous or osseous rod
• dysplasia in some mice
• in some mice
• continuous with a rostrally oriented cartilaginous or osseous rod, which is frequently fused with the alisphenoid bone
• larger than in wild-type mice
• cleft of the median upper lip in some mice
• duplication of cartilaginous nasal septum

digestive/alimentary system
• bilateral (1 of 5 mice) or unilateral (3 of 5 mice) cystic epithelial formations within the parenchyma
• bilateral in 1 of 5 mice, unilateral in 3 of 5 mice
• bilateral in 1 of 5 mice, unilateral in 3 of 5 mice
• bilateral in 1 of 5 mice, unilateral in 3 of 5 mice
• bilateral cystic dysplasia in 2 of 5 mice
• shortened in all mice

growth/size/body
• dysplasia in some mice
• in some mice
• cleft of the median upper lip in some mice
• duplication of cartilaginous nasal septum

respiratory system
• duplication of cartilaginous nasal septum




Genotype
MGI:3766086
cx6
Allelic
Composition
Rarbtm1Mma/Rarb+
Rargtm1Ipc/Rarg+
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rarbtm1Mma mutation (0 available); any Rarb mutation (40 available)
Rargtm1Ipc mutation (2 available); any Rarg mutation (150 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
• 4 of 12 mutants exhibit agenesis of the metoptic pillar

vision/eye
• 4 of 12 mutants exhibit agenesis of the metoptic pillar
• 5 of 6 E18.5 mutants show a bilateral persistent hyperplastic primary vitreous

skeleton
• 4 of 12 mutants exhibit agenesis of the metoptic pillar




Genotype
MGI:3766087
cx7
Allelic
Composition
Rarbtm1Mma/Rarbtm1Mma
Rargtm1Ipc/Rarg+
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rarbtm1Mma mutation (0 available); any Rarb mutation (40 available)
Rargtm1Ipc mutation (2 available); any Rarg mutation (150 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• 5 of 6 E18.5 mutants show a bilateral persistent hyperplastic primary vitreous

skeleton
• 46% of mutants exhibit skeletal malformations
• 1 of 13 (8%) mutants exhibit a posterior tubercle on the basioccipital bone
• 1 of 13 (8%) exhibit sternum malformations
• 3 of 13 (23%) of mutants exhibit fusion of C1-AA with C2 dens
• 2 of 13 (15%) mutants exhibit a bifid C2

craniofacial
• 1 of 13 (8%) mutants exhibit a posterior tubercle on the basioccipital bone





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last database update
03/25/2025
MGI 6.24
The Jackson Laboratory