About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Tcf7l2+
wild type
MGI:2435095
Summary 7 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Tcf7l2tm1a(EUCOMM)Wtsi/Tcf7l2+ C57BL/6N-Tcf7l2tm1a(EUCOMM)Wtsi/Wtsi MGI:5706108
ht2
Tcf7l2tm1a(EUCOMM)Wtsi/Tcf7l2+ C57BL/6-Tcf7l2tm1a(EUCOMM)Wtsi MGI:5449730
ht3
Tcf7l2em1Nobr/Tcf7l2+ involves: CD-1 MGI:5294419
ht4
Tcf7l2em2Nobr/Tcf7l2+ involves: CD-1 MGI:5294421
cn5
Tcf7l2tm3.1(cre/ERT2)Mrc/Tcf7l2+
Gt(ROSA)26Sortm1(DTA)Mrc/Gt(ROSA)26Sor+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:5141595
cx6
ApcMin/Apc+
Tcf7l2tm1.1(EGFP/cre)Mrc/Tcf7l2+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J MGI:4946925
cx7
ApcMin/Apc+
Tcf7l2tm2.2Mrc/Tcf7l2+
involves: C57BL/6J MGI:4946927


Genotype
MGI:5706108
ht1
Allelic
Composition
Tcf7l2tm1a(EUCOMM)Wtsi/Tcf7l2+
Genetic
Background
C57BL/6N-Tcf7l2tm1a(EUCOMM)Wtsi/Wtsi
Cell Lines EPD0157_5_B10
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tcf7l2tm1a(EUCOMM)Wtsi mutation (1 available); any Tcf7l2 mutation (58 available)
Data Sources
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
adipose tissue

growth/size/body

hematopoietic system

skeleton




Genotype
MGI:5449730
ht2
Allelic
Composition
Tcf7l2tm1a(EUCOMM)Wtsi/Tcf7l2+
Genetic
Background
C57BL/6-Tcf7l2tm1a(EUCOMM)Wtsi
Cell Lines EPD0157_5_B10
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tcf7l2tm1a(EUCOMM)Wtsi mutation (1 available); any Tcf7l2 mutation (58 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
homeostasis/metabolism
• increase in basal hepatic glucose production in hyperinsulinemic-euglycemic clamp studies
• despite changes in glucose levels, no abnormalities in insulin signaling or insulin levels are detected
• under fasting and feeding conditions
• display pyruvate intolerance that is accompanied with increased hepatic expression of gluconeogenic genes

liver/biliary system
• increase in basal hepatic glucose production in hyperinsulinemic-euglycemic clamp studies




Genotype
MGI:5294419
ht3
Allelic
Composition
Tcf7l2em1Nobr/Tcf7l2+
Genetic
Background
involves: CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tcf7l2em1Nobr mutation (0 available); any Tcf7l2 mutation (58 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
homeostasis/metabolism
N
• mice exhibit normal energy expenditure
• in fasting mice fed a high-fat diet
• intermediate at birth
• in fasting mice fed a high-fat diet
• on standard chow or when fed a high-fat diet

behavior/neurological

growth/size/body
• at 1 to 6 weeks of age

adipose tissue




Genotype
MGI:5294421
ht4
Allelic
Composition
Tcf7l2em2Nobr/Tcf7l2+
Genetic
Background
involves: CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tcf7l2em2Nobr mutation (0 available); any Tcf7l2 mutation (58 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
homeostasis/metabolism
N
• mice exhibit normal energy expenditure
• in fasting mice fed a high-fat diet
• intermediate at birth
• in fasting mice fed a high-fat diet
• on standard chow or when fed a high-fat diet

behavior/neurological

growth/size/body
• at 1 to 6 weeks of age

adipose tissue




Genotype
MGI:5141595
cn5
Allelic
Composition
Tcf7l2tm3.1(cre/ERT2)Mrc/Tcf7l2+
Gt(ROSA)26Sortm1(DTA)Mrc/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(DTA)Mrc mutation (1 available); any Gt(ROSA)26Sor mutation (1243 available)
Tcf7l2tm3.1(cre/ERT2)Mrc mutation (1 available); any Tcf7l2 mutation (58 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
muscle
• 42% reduction in muscle connective tissue fibroblasts after 5 doses of tamoxifen
• ablation of fibroblasts leads to 51% reduction in muscle satellite cells 5 days post injury
• at 3 days post injury fibroblasts are reduced 19% but myofiber regeneration is increased 5 fold
• leads to depletion of satellite cell pool and reduction in regenerating myofibers at 5 days
• tibialis anterior muscle is regenerated at 28 days after injury but somewhat smaller in cross-sectional area
• satellite cell numbers have recovered after 28 days
• smaller diameter of regenerated myofibers
• muscle size differences are no longer significant at 56 days after injury




Genotype
MGI:4946925
cx6
Allelic
Composition
ApcMin/Apc+
Tcf7l2tm1.1(EGFP/cre)Mrc/Tcf7l2+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
ApcMin mutation (12 available); any Apc mutation (155 available)
Tcf7l2tm1.1(EGFP/cre)Mrc mutation (1 available); any Tcf7l2 mutation (58 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
neoplasm
• mice develop colorectal tubular adenomas unlike Apcmin heterozygotes

digestive/alimentary system
• mice develop colorectal tubular adenomas unlike Apcmin heterozygotes




Genotype
MGI:4946927
cx7
Allelic
Composition
ApcMin/Apc+
Tcf7l2tm2.2Mrc/Tcf7l2+
Genetic
Background
involves: C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
ApcMin mutation (12 available); any Apc mutation (155 available)
Tcf7l2tm2.2Mrc mutation (0 available); any Tcf7l2 mutation (58 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
neoplasm
• mice develop colorectal tubular adenomas unlike Apcmin heterozygotes

digestive/alimentary system
• mice develop colorectal tubular adenomas unlike Apcmin heterozygotes





Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
10/06/2026
MGI 6.29
The Jackson Laboratory