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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Ttr+
wild type
MGI:2432463
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Ttrtm2(TTR)Kymm/Ttr+ B6.Cg-Ttrtm2(TTR)Kymm MGI:3838187
ht2
Ttrtm1Wsb/Ttr+ involves: 129S/SvEv * MF1 MGI:3848329


Genotype
MGI:3838187
ht1
Allelic
Composition
Ttrtm2(TTR)Kymm/Ttr+
Genetic
Background
B6.Cg-Ttrtm2(TTR)Kymm
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ttrtm2(TTR)Kymm mutation (0 available); any Ttr mutation (40 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
homeostasis/metabolism
• circulating T4 levels are decreased by around 10% compared to controls
• circulating levels of T3 are slightly decreased in the blood similar to levels in null homozygotes
• circulating retinol binding protein levels are reduced by over 10%
• serum retinol levels are reduced by around 40% compared to controls




Genotype
MGI:3848329
ht2
Allelic
Composition
Ttrtm1Wsb/Ttr+
Genetic
Background
involves: 129S/SvEv * MF1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ttrtm1Wsb mutation (1 available); any Ttr mutation (40 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
homeostasis/metabolism
• heterozygotes show an intermediate reduction in total circulating T4 levels relative to homozygous mutant and wild-type control mice
• heterozygotes show an intermediate reduction in total circulating T3 levels relative to homozygous mutant and wild-type control mice





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last database update
01/28/2026
MGI 6.24
The Jackson Laboratory