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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem
targeted mutation 1, Bernice E Morrow
MGI:5551717
Summary 6 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+
Tg(Pax2-cre)1Akg/0
involves: 129 * C57BL/6 * SJL MGI:5551751
cn2
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+
Tbx1tm6(cre)Bld/Tbx1+
involves: 129 * C57BL/6 * SJL MGI:5551752
cn3
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sortm1(Tbx1/GFP)Bem
Tbx1tm6(cre)Bld/Tbx1+
involves: 129 * C57BL/6 * SJL MGI:5551753
cn4
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+
Foxg1tm1(cre)Skm/Foxg1+
involves: 129P2/OlaHsd * C57BL/6 * SJL MGI:5551750
cn5
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+
Tbx1tm1Bld/Tbx1tm6(cre)Bld
involves: 129S7/SvEvBrd * C57BL/6 * SJL MGI:5551754
cn6
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sortm1(Tbx1/GFP)Bem
Tbx1tm1Bld/Tbx1tm6(cre)Bld
involves: 129S7/SvEvBrd * C57BL/6 * SJL MGI:5551755


Genotype
MGI:5551751
cn1
Allelic
Composition
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+
Tg(Pax2-cre)1Akg/0
Genetic
Background
involves: 129 * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem mutation (1 available); any Gt(ROSA)26Sor mutation (944 available)
Tg(Pax2-cre)1Akg mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Thymic aplasia, nasal malformations, and eye, pharyngeal and ear defects in Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+ Foxg1tm1(cre)Skm/Foxg1+ mice and microcephaly, ocular and ear defects in Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+ Tg(Pax2-cre)1Akg/0 mice

mortality/aging

hearing/vestibular/ear
• hypoplastic to varying degrees, but enlarged in two instances
• fusion plates are not joined at E12.25
• however, they have partially recovered by E14.5
• enlarged at E14.5




Genotype
MGI:5551752
cn2
Allelic
Composition
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+
Tbx1tm6(cre)Bld/Tbx1+
Genetic
Background
involves: 129 * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem mutation (1 available); any Gt(ROSA)26Sor mutation (944 available)
Tbx1tm6(cre)Bld mutation (1 available); any Tbx1 mutation (34 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
N
• mice exhibit normal heart development at E14.5

hearing/vestibular/ear
N
• mice do not exhibit any morphological defects in the inner ear




Genotype
MGI:5551753
cn3
Allelic
Composition
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sortm1(Tbx1/GFP)Bem
Tbx1tm6(cre)Bld/Tbx1+
Genetic
Background
involves: 129 * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem mutation (1 available); any Gt(ROSA)26Sor mutation (944 available)
Tbx1tm6(cre)Bld mutation (1 available); any Tbx1 mutation (34 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Heart development defects in Tbx1tm6(cre)Bld/Tbx1+ Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sortm1(Tbx1/GFP)Bem mice

mortality/aging
• no mice are present at P10

cardiovascular system




Genotype
MGI:5551750
cn4
Allelic
Composition
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+
Foxg1tm1(cre)Skm/Foxg1+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Foxg1tm1(cre)Skm mutation (2 available); any Foxg1 mutation (28 available)
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem mutation (1 available); any Gt(ROSA)26Sor mutation (944 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Thymic aplasia, nasal malformations, and eye, pharyngeal and ear defects in Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+ Foxg1tm1(cre)Skm/Foxg1+ mice and microcephaly, ocular and ear defects in Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+ Tg(Pax2-cre)1Akg/0 mice

mortality/aging

hearing/vestibular/ear
• hypoplastic to varying degrees, but enlarged in two instances
• enlarged at E14.5

nervous system
• abnormal size and misguided projections
• abnormal size and misguided projections
• abnormal size and misguided projections
• abnormal size and misguided projections

respiratory system

vision/eye

hematopoietic system
• thymic aplasia

craniofacial

taste/olfaction

immune system
• thymic aplasia

endocrine/exocrine glands
• thymic aplasia




Genotype
MGI:5551754
cn5
Allelic
Composition
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sor+
Tbx1tm1Bld/Tbx1tm6(cre)Bld
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem mutation (1 available); any Gt(ROSA)26Sor mutation (944 available)
Tbx1tm1Bld mutation (1 available); any Tbx1 mutation (34 available)
Tbx1tm6(cre)Bld mutation (1 available); any Tbx1 mutation (34 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Failure of inner ear morphogenesis in Tbx1tm1Bld/Tbx1tm1Bld mice at E14.5 and partial rescue of inner ear morphogenesis in Tbx1tm6(cre)Bld/Tbx1tm1Bld Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/ Gt(ROSA)26Sor+ mice

hearing/vestibular/ear
N
• recovery of the anterior and posterior semicircular canals compared with null mice
• partial rescue with null mice
• partial rescue with null mice

cardiovascular system
• in half of mice




Genotype
MGI:5551755
cn6
Allelic
Composition
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem/Gt(ROSA)26Sortm1(Tbx1/GFP)Bem
Tbx1tm1Bld/Tbx1tm6(cre)Bld
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(Tbx1/GFP)Bem mutation (1 available); any Gt(ROSA)26Sor mutation (944 available)
Tbx1tm1Bld mutation (1 available); any Tbx1 mutation (34 available)
Tbx1tm6(cre)Bld mutation (1 available); any Tbx1 mutation (34 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Gt(ROSA)26Sortm1(Tbx1/GFP)Bem can patially rescue heart phenotypes in Tbx1tm6(cre)Bld/Tbx1tm1Bld mice

cardiovascular system
• in 5 of 6 mice





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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory