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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Gas1+
wild type
MGI:2430567
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cx1
Boctm1Aok/Boc+
Gas1tm2Fan/Gas1+
involves: 129 * C57BL/6 * CD-1 MGI:7287690
cx2
Cdontm2Rsk/Cdontm2Rsk
Gas1tm2Fan/Gas1+
involves: 129 * C57BL/6J MGI:3711888
cx3
Gas1tm2Fan/Gas1+
Shhtm1Chg/Shh+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J MGI:3711885


Genotype
MGI:7287690
cx1
Allelic
Composition
Boctm1Aok/Boc+
Gas1tm2Fan/Gas1+
Genetic
Background
involves: 129 * C57BL/6 * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Boctm1Aok mutation (2 available); any Boc mutation (62 available)
Gas1tm2Fan mutation (0 available); any Gas1 mutation (16 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
N
• mice exhibit a craniofacial midline comparable to that of wild type mice, with normal palatal development at E14.5 and normal Shh activity in the palatal shelves at E12.5




Genotype
MGI:3711888
cx2
Allelic
Composition
Cdontm2Rsk/Cdontm2Rsk
Gas1tm2Fan/Gas1+
Genetic
Background
involves: 129 * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdontm2Rsk mutation (1 available); any Cdon mutation (64 available)
Gas1tm2Fan mutation (0 available); any Gas1 mutation (16 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
limbs/digits/tail
• digit 2 or 3 is complete absent form hindlimbs
• forelimb digits 2 and 3 are fused

skeleton
• lack of ossification




Genotype
MGI:3711885
cx3
Allelic
Composition
Gas1tm2Fan/Gas1+
Shhtm1Chg/Shh+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gas1tm2Fan mutation (0 available); any Gas1 mutation (16 available)
Shhtm1Chg mutation (2 available); any Shh mutation (48 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• pMN motorneuron progenitor cell numbers are increased





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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
01/13/2026
MGI 6.24
The Jackson Laboratory