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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Gab1tm1Wbm
targeted mutation 1, Walter Birchmeier
MGI:1934204
Summary 7 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Gab1tm1Wbm/Gab1tm1Wbm involves: 129P2/OlaHsd MGI:3617780
hm2
Gab1tm1Wbm/Gab1tm1Wbm involves: 129P2/OlaHsd * C57BL/6 MGI:2177557
hm3
Gab1tm1Wbm/Gab1tm1Wbm involves: 129P2/OlaHsd * C57BL/6 * CD-1 MGI:3759964
ht4
Gab1tm1Wbm/Gab1+ involves: 129P2/OlaHsd * C57BL/6 MGI:3617775
cx5
Cxcr4tm1Qma/Cxcr4tm1Qma
Gab1tm1Wbm/Gab1tm1Wbm
involves: 129P2/OlaHsd * 129X1/SvJ * C57BL/6 MGI:3617774
cx6
Gab1tm1Wbm/Gab1tm1Wbm
Mettm1Cbm/Mettm1Cbm
involves: 129P2/OlaHsd * C57BL/6 MGI:3617777
cx7
Cd44tm1Mak/Cd44tm1Mak
Gab1tm1Wbm/Gab1+
involves: 129P2/OlaHsd * C57BL/6 MGI:4946522


Genotype
MGI:3617780
hm1
Allelic
Composition
Gab1tm1Wbm/Gab1tm1Wbm
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gab1tm1Wbm mutation (0 available); any Gab1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• at E10.75 fewer hypaxial muscle progenitor cells reach the floor of the first branchial arch
• the intrinsic tongue muscle is smaller but present
• limb muscle size is reduced and in the proximal portion of the lower forelimb, particular extensor muscles of dorsal limb are reduced in size

digestive/alimentary system
• the intrinsic tongue muscle is smaller but present

craniofacial
• the intrinsic tongue muscle is smaller but present

cellular
• at E10.75 fewer hypaxial muscle progenitor cells reach the floor of the first branchial arch

growth/size/body
• the intrinsic tongue muscle is smaller but present




Genotype
MGI:2177557
hm2
Allelic
Composition
Gab1tm1Wbm/Gab1tm1Wbm
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gab1tm1Wbm mutation (0 available); any Gab1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• from E13.5 to E18.5 the proportion of viable homozygous mice decreases with none born alive

embryo
• at E13.5, the extracellular matrix around fetal blood vessels is fragmented and fetal blood cells are occasionally seen infiltrating the trophoblast layer
• at E13.5, the labyrinth layer is disorganized, reduced in thickness and contains less blood; however the spongiotrophoblast layer is similar to wild-type

muscle
• at E10.25, fewer progenitor cells have delaminated from the occipitally located somites and the precursor stream headed for the floor of the branchial arches contains fewer cells and does not extend as far distally as in wild-type
• at E10.25, fewer precursor cells are found in the forelimb bud with the dorsal forelimb most strongly affected
• at E13.5 the diaphragm muscle is reduced in size; however the internal tongue muscle appears normal
• at E14.5 in the proximal lower forelimb the extensor muscle groups are either absent or very small while the flexor groups are present and in the distal lower forelimb only traces of muscle cells are found
• at E14.5 in the hindlimb some muscle groups are present but reduced in size and distal muscles are more severely affected

liver/biliary system
• at E14.5, the liver to body weight ratio is significantly reduced (0.05 versus 0.088 in wild-type)

growth/size/body
• from E13.5 to E18.5 surviving embryos show a gradual delay in growth and development

integument
• at E14.5 follicle development appears normal but by E17.5 hair follicle outgrowth is retarded and the number of follicles is reduced possibly reflect the reduction in total body size
• at E17.5
• at E17.5, keratinization is reduced

cardiovascular system
• at E13.5, the extracellular matrix around fetal blood vessels is fragmented and fetal blood cells are occasionally seen infiltrating the trophoblast layer

cellular
• at E10.25, fewer progenitor cells have delaminated from the occipitally located somites and the precursor stream headed for the floor of the branchial arches contains fewer cells and does not extend as far distally as in wild-type
• at E10.25, fewer precursor cells are found in the forelimb bud with the dorsal forelimb most strongly affected




Genotype
MGI:3759964
hm3
Allelic
Composition
Gab1tm1Wbm/Gab1tm1Wbm
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gab1tm1Wbm mutation (0 available); any Gab1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Cleft palate in Gab1tm3Wbm/Gab1tm3Wbm, Gab1tm2Wbm/Gab1tm2Wbm, Gab1tm1Wbm/Gab1tm1Wbm and Gab1tm3Wbm/Gab1tm3Wbm Mettm1Cbm/Met+ mice, but not in Gab1tm4Wbm/Gab1tm4Wbm mice

craniofacial
• at E16, many mice have an open secondary palate

muscle
• extensor muscles are missing and muscles reach less far distally

digestive/alimentary system
• at E16, many mice have an open secondary palate

growth/size/body
• at E16, many mice have an open secondary palate




Genotype
MGI:3617775
ht4
Allelic
Composition
Gab1tm1Wbm/Gab1+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gab1tm1Wbm mutation (0 available); any Gab1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• about 5% of heterozygotes develop after spasms 2-3 months of age and die

behavior/neurological
• about 5% of heterozygotes develop after spasms 2-3 months of age and die




Genotype
MGI:3617774
cx5
Allelic
Composition
Cxcr4tm1Qma/Cxcr4tm1Qma
Gab1tm1Wbm/Gab1tm1Wbm
Genetic
Background
involves: 129P2/OlaHsd * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cxcr4tm1Qma mutation (1 available); any Cxcr4 mutation (46 available)
Gab1tm1Wbm mutation (0 available); any Gab1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• at E10.75 and E11.5, no hypaxial muscle progenitor cells reach the floor of the first branchial arch
• only a fragment of the intrinsic muscle is present in the proximal tongue
• at E10.75, the number of muscle cells (MyoD+) is further reduced and the number of apoptotic cells is increased in the dorsal and ventral limbs compared to Gab single homozygotes
• limb muscle size is reduced and in the proximal portion of the lower forelimb, particular extensor muscles of dorsal limb are absent and the flexor muscles are reduced in size compared to Gab1 single homozygotes

digestive/alimentary system
• only a fragment of the intrinsic muscle is present in the proximal tongue
• the overall size of the tongue is very small

craniofacial
• only a fragment of the intrinsic muscle is present in the proximal tongue
• the overall size of the tongue is very small

cellular
• at E10.75 and E11.5, no hypaxial muscle progenitor cells reach the floor of the first branchial arch

growth/size/body
• only a fragment of the intrinsic muscle is present in the proximal tongue
• the overall size of the tongue is very small




Genotype
MGI:3617777
cx6
Allelic
Composition
Gab1tm1Wbm/Gab1tm1Wbm
Mettm1Cbm/Mettm1Cbm
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gab1tm1Wbm mutation (0 available); any Gab1 mutation (78 available)
Mettm1Cbm mutation (0 available); any Met mutation (83 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• at E14.5, muscles are virtually absent from all lower limbs




Genotype
MGI:4946522
cx7
Allelic
Composition
Cd44tm1Mak/Cd44tm1Mak
Gab1tm1Wbm/Gab1+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cd44tm1Mak mutation (1 available); any Cd44 mutation (72 available)
Gab1tm1Wbm mutation (0 available); any Gab1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• shortly after birth, 60% of the animals die
• shortly after birth, 60% of the animals die





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last database update
10/29/2024
MGI 6.24
The Jackson Laboratory