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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Sp8tm2Smb
targeted mutation 2, Sheila M Bell
MGI:4837153
Summary 5 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Sp8tm1Smb/Sp8tm2Smb
Foxg1tm1(cre)Skm/Foxg1+
involves: 129P2/OlaHsd * 129S1/Sv * 129X1/SvJ MGI:7437676
cn2
Sp8tm1Smb/Sp8tm2Smb
Pax3tm1(cre)Joe/Pax3+
involves: 129S1/Sv * 129X1/SvJ MGI:7437668
cn3
Sp8tm2Smb/Sp8tm2Smb
Tg(mI56i-cre,EGFP)1Kc/?
involves: 129S1/Sv * 129X1/SvJ * Black Swiss * FVB/N MGI:4837173
cn4
Sp8tm1Smb/Sp8tm2Smb
H2az2Tg(Wnt1-cre)11Rth/H2az2+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J * CBA/J MGI:7437666
cn5
Sp8tm1Smb/Sp8tm2Smb
Mesp1tm2(cre)Ysa/Mesp1+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6NCrlj * CBA/JNCrlj MGI:7437667


Genotype
MGI:7437676
cn1
Allelic
Composition
Sp8tm1Smb/Sp8tm2Smb
Foxg1tm1(cre)Skm/Foxg1+
Genetic
Background
involves: 129P2/OlaHsd * 129S1/Sv * 129X1/SvJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Foxg1tm1(cre)Skm mutation (2 available); any Foxg1 mutation (28 available)
Sp8tm1Smb mutation (0 available); any Sp8 mutation (29 available)
Sp8tm2Smb mutation (1 available); any Sp8 mutation (29 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
• all (13 of 13) mice exhibited truncation of anterior facial structures
• 5 of 13 mice exhibited cleft lip and/or palate
• 5 of 13 mice exhibited cleft lip and/or palate
• all (13 of 13) mice showed incomplete medial nasal prominence approximation along the facial midline, resulting in a facial midline cleft

nervous system
• mice exhibited malformations of the telencephalon
• only 1 of 13 mice exhibited exencephaly

growth/size/body
• all (13 of 13) mice exhibited truncation of anterior facial structures
• 5 of 13 mice exhibited cleft lip and/or palate
• 5 of 13 mice exhibited cleft lip and/or palate
• all (13 of 13) mice showed incomplete medial nasal prominence approximation along the facial midline, resulting in a facial midline cleft

digestive/alimentary system
• 5 of 13 mice exhibited cleft lip and/or palate

vision/eye
N
• none of the 13 mice analyzed showed ocular hypertelorism




Genotype
MGI:7437668
cn2
Allelic
Composition
Sp8tm1Smb/Sp8tm2Smb
Pax3tm1(cre)Joe/Pax3+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Pax3tm1(cre)Joe mutation (1 available); any Pax3 mutation (50 available)
Sp8tm1Smb mutation (0 available); any Sp8 mutation (29 available)
Sp8tm2Smb mutation (1 available); any Sp8 mutation (29 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
N
• 5 of 17 mice exhibited no detectable craniofacial defects
• 5 of 17 mice exhibited absence of the frontal bone
• 5 of 17 mice exhibited absence of the parietal bones
• 11 of 17 mice exhibited truncation of anterior facial (snout) structures
• 7 of 17 mice exhibited cleft lip and/or palate
• 7 of 17 mice exhibited cleft lip and/or palate
• 5 of 17 mice exhibited a severe midline cleft
• 7 of 17 mice exhibited moderate midline defects

growth/size/body
• 11 of 17 mice exhibited truncation of anterior facial (snout) structures
• 7 of 17 mice exhibited cleft lip and/or palate
• 7 of 17 mice exhibited cleft lip and/or palate
• 5 of 17 mice exhibited a severe midline cleft
• 7 of 17 mice exhibited moderate midline defects

nervous system
• 5 of 17 mice exhibited exencephaly

vision/eye
• 5 of 17 mice exhibited hypertelorism

digestive/alimentary system
• 7 of 17 mice exhibited cleft lip and/or palate

skeleton
• 5 of 17 mice exhibited absence of the frontal bone
• 5 of 17 mice exhibited absence of the parietal bones




Genotype
MGI:4837173
cn3
Allelic
Composition
Sp8tm2Smb/Sp8tm2Smb
Tg(mI56i-cre,EGFP)1Kc/?
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * Black Swiss * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Sp8tm2Smb mutation (1 available); any Sp8 mutation (29 available)
Tg(mI56i-cre,EGFP)1Kc mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
N
• most mice do not exhibit exencephaly
• stacked arrangement of glomeruli
• noticably smaller




Genotype
MGI:7437666
cn4
Allelic
Composition
Sp8tm1Smb/Sp8tm2Smb
H2az2Tg(Wnt1-cre)11Rth/H2az2+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J * CBA/J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
H2az2Tg(Wnt1-cre)11Rth mutation (2 available); any H2az2 mutation (26 available)
Sp8tm1Smb mutation (0 available); any Sp8 mutation (29 available)
Sp8tm2Smb mutation (1 available); any Sp8 mutation (29 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
N
• mice exhibit no detectable craniofacial defects




Genotype
MGI:7437667
cn5
Allelic
Composition
Sp8tm1Smb/Sp8tm2Smb
Mesp1tm2(cre)Ysa/Mesp1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6NCrlj * CBA/JNCrlj
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mesp1tm2(cre)Ysa mutation (1 available); any Mesp1 mutation (17 available)
Sp8tm1Smb mutation (0 available); any Sp8 mutation (29 available)
Sp8tm2Smb mutation (1 available); any Sp8 mutation (29 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
N
• 9 of 10 mice exhibited no detectable craniofacial defects
• 1 of 10 mice showed truncation of anterior facial structures
• 1 of 10 mice showed incomplete medial nasal prominence approximation along the facial midline, resulting in a partial facial midline cleft

growth/size/body
• 1 of 10 mice showed truncation of anterior facial structures
• 1 of 10 mice showed incomplete medial nasal prominence approximation along the facial midline, resulting in a partial facial midline cleft





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last database update
04/23/2024
MGI 6.23
The Jackson Laboratory