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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Usf1tm1Msw
targeted mutation 1, Michele Sawadogo
MGI:2181678
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Usf1tm1Msw/Usf1tm1Msw involves: 129S7/SvEvBrd * C57BL/6 MGI:2653877
cx2
Usf1tm1Msw/Usf1tm1Msw
Usf2tm1Msw/Usf2tm1Msw
involves: 129S7/SvEvBrd * C57BL/6 MGI:2653876
cx3
Usf1tm1Msw/Usf1+
Usf2tm1Msw/Usf2tm1Msw
involves: 129S7/SvEvBrd * C57BL/6 MGI:2653879
cx4
Usf1tm1Msw/Usf1tm1Msw
Usf2tm1Msw/Usf2+
involves: 129S7/SvEvBrd * C57BL/6 MGI:3850732


Genotype
MGI:2653877
hm1
Allelic
Composition
Usf1tm1Msw/Usf1tm1Msw
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Usf1tm1Msw mutation (0 available); any Usf1 mutation (81 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• unusual whisker trimming and hair nibbling is observed in >90% of cages containing female homozygotes as young as 1.5-2 months of age
• unusual whisker trimming and hair nibbling is observed in >90% of cages containing female homozygotes as young as 1.5-2 months of age
• occasionally, homozygotes display epileptic seizures in response to moderate stress (e.g. handling just after awakening)
• although the actual sequence of events is variable among different episodes, one or several of the following may be observed: foamy saliva around the oral region, squeaking prior to falling on the side, a brief period of intense convulsions, curled up tail, folding back of limbs if raised by the tail, complete akinesia for up to 5 min, and polyuria
• recovery from seizures is progressive and takes several minutes
• most affected homozygotes displaying one or more seizures are female; however, a few males are also affected
• homozygotes, esp. females, are prone to spontaneous epileptic seizures

nervous system
• occasionally, homozygotes display epileptic seizures in response to moderate stress (e.g. handling just after awakening)
• although the actual sequence of events is variable among different episodes, one or several of the following may be observed: foamy saliva around the oral region, squeaking prior to falling on the side, a brief period of intense convulsions, curled up tail, folding back of limbs if raised by the tail, complete akinesia for up to 5 min, and polyuria
• recovery from seizures is progressive and takes several minutes
• most affected homozygotes displaying one or more seizures are female; however, a few males are also affected
• homozygotes, esp. females, are prone to spontaneous epileptic seizures




Genotype
MGI:2653876
cx2
Allelic
Composition
Usf1tm1Msw/Usf1tm1Msw
Usf2tm1Msw/Usf2tm1Msw
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Usf1tm1Msw mutation (0 available); any Usf1 mutation (81 available)
Usf2tm1Msw mutation (0 available); any Usf2 mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• no double homozygotes are identified among the progeny of double heterozygous mice




Genotype
MGI:2653879
cx3
Allelic
Composition
Usf1tm1Msw/Usf1+
Usf2tm1Msw/Usf2tm1Msw
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Usf1tm1Msw mutation (0 available); any Usf1 mutation (81 available)
Usf2tm1Msw mutation (0 available); any Usf2 mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• no mice heterozygous for Usf1tm1Msw and homozygous for Usf2tm1Msw are identified among the progeny of double heterozygotes




Genotype
MGI:3850732
cx4
Allelic
Composition
Usf1tm1Msw/Usf1tm1Msw
Usf2tm1Msw/Usf2+
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Usf1tm1Msw mutation (0 available); any Usf1 mutation (81 available)
Usf2tm1Msw mutation (0 available); any Usf2 mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• fewer mice homozygous for Usf1tm1Msw and heterozygous for Usf2tm1Msw are identified among the progeny of double heterozygotes (24 vs expected 36)





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last database update
04/16/2024
MGI 6.23
The Jackson Laboratory