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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Leptm1.2Gvcao
targeted mutation 1.2, Gwen Childs
MGI:5707695
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Leptm1.2Gvcao/Leptm1.2Gvcao involves: 129S4/SvJaeSor * FVB/NJ * FVB/NTac MGI:5881977


Genotype
MGI:5881977
hm1
Allelic
Composition
Leptm1.2Gvcao/Leptm1.2Gvcao
Genetic
Background
involves: 129S4/SvJaeSor * FVB/NJ * FVB/NTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Leptm1.2Gvcao mutation (0 available); any Lep mutation (21 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• both male and female mutant mice are infertile

growth/size/body
• mutant males are significantly heavier than controls starting at 3 weeks of age
• mutant females are significantly heavier than controls starting at 5 weeks of age
• mutant mice weigh significantly more than controls by or shortly after weaning and continue to gain weight into adulthood

homeostasis/metabolism
• neither male nor female mutant mice produce any detectable circulating serum leptin levels
• primary pituitary cells derived from adult mutant mice exhibit very few cells that are immunopositive for leptin relative to control pituitary cells
• adult male, but not female, mutants exhibit significantly decreased circulating FSH levels relative to controls
• adult female, but not male, mutants exhibit significantly decreased circulating prolactin levels relative to controls

endocrine/exocrine glands
• primary pituitary cells derived from adult mutant mice show a significant decrease in the % of cells immunolabeled for growth hormone (GH) relative to control pituitary cells

nervous system
• primary pituitary cells derived from adult mutant mice show a significant decrease in the % of cells immunolabeled for growth hormone (GH) relative to control pituitary cells





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Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
12/10/2024
MGI 6.24
The Jackson Laboratory