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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Fto+
wild type
MGI:2438303
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Ftotm1Urt/Fto+ involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:3841176
ht2
FtoI367F/Fto+ involves: C3H/HeH * C57BL/6J MGI:4357690


Genotype
MGI:3841176
ht1
Allelic
Composition
Ftotm1Urt/Fto+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ftotm1Urt mutation (0 available); any Fto mutation (76 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• mice have less weight gain and less body-fat percentage than controls after 12 weeks on a high-fat diet

homeostasis/metabolism
• mice have less weight gain and less body-fat percentage than controls after 12 weeks on a high-fat diet




Genotype
MGI:4357690
ht2
Allelic
Composition
FtoI367F/Fto+
Genetic
Background
involves: C3H/HeH * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
FtoI367F mutation (1 available); any Fto mutation (76 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
homeostasis/metabolism
• in 18 week old male mice
• in 18 week old male mice
• 18 week old male mice exhibit increased respiratory exchange rate compared with similarly treated wild-type mice
• whole body metabolism in male is increased with a switch to relatively more carbohydrate metabolism than in wild-type mice

growth/size/body
• beginning at 12 weeks, male mice exhibit a maturity-onset reduction in body weight compared with wild-type mice
• at 24 weeks, male mice weigh 10% less than wild-type mice
• however, female mice maintain normal body weight

adipose tissue
• at 24 weeks, male mice exhibit a 16% to 18% decrease in total fat mass compared with wild-type mice
• in 24 week old male mice





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last database update
03/25/2025
MGI 6.24
The Jackson Laboratory