About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Tcf7l2tm2.1Mrc
targeted mutation 2.1, Mario R Capecchi
MGI:4946910
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Tcf7l2tm1(EGFP/cre)Mrc/Tcf7l2tm2.1Mrc involves: 129S1/Sv * 129S6/SvEvTac * 129X1/SvJ * C57BL/6NCrl MGI:4946924
cn2
Tcf7l2tm1.1(EGFP/cre)Mrc/Tcf7l2tm2.1Mrc involves: 129S1/Sv * 129S6/SvEvTac * 129X1/SvJ * C57BL/6NCrl MGI:4946928
cn3
ApcMin/Apc+
Tcf7l2tm1(EGFP/cre)Mrc/Tcf7l2tm2.1Mrc
involves: 129S1/Sv * 129S6/SvEvTac * 129X1/SvJ * C57BL/6J * C57BL/6NCrl MGI:4946926


Genotype
MGI:4946924
cn1
Allelic
Composition
Tcf7l2tm1(EGFP/cre)Mrc/Tcf7l2tm2.1Mrc
Genetic
Background
involves: 129S1/Sv * 129S6/SvEvTac * 129X1/SvJ * C57BL/6NCrl
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tcf7l2tm1(EGFP/cre)Mrc mutation (0 available); any Tcf7l2 mutation (56 available)
Tcf7l2tm2.1Mrc mutation (1 available); any Tcf7l2 mutation (56 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
digestive/alimentary system

growth/size/body

neoplasm
N
• mice do not exhibit develop intestinal adenomas

endocrine/exocrine glands




Genotype
MGI:4946928
cn2
Allelic
Composition
Tcf7l2tm1.1(EGFP/cre)Mrc/Tcf7l2tm2.1Mrc
Genetic
Background
involves: 129S1/Sv * 129S6/SvEvTac * 129X1/SvJ * C57BL/6NCrl
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tcf7l2tm1.1(EGFP/cre)Mrc mutation (1 available); any Tcf7l2 mutation (56 available)
Tcf7l2tm2.1Mrc mutation (1 available); any Tcf7l2 mutation (56 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice are not viable at birth

digestive/alimentary system
• at E13.5, mice exhibit increased proliferating cells in the intestine compared with wild-type mice
• by E16.5, no proliferation cells are found in the small intestine unlike in wild-type mice
• the number of proliferating cells in the colon is decreased compared to in wild-type mice
• the intestines are fragile compared to in wild-type mice
• small intestine and colons exhibit decreased epithelial cells due to necrosis compared with wild-type mice
• absent in the small intestine
• incorrectly localized in the colon
• absent in the small intestine
• elongated with large abnormally shaped nuclei in the colon
• mice lack crypt structures due to necrosis unlike wild-type mice
• the colon is fragile and the meconium is diffuse throughout the colon compared to in wild-type mice

cellular
• absent in the small intestine
• incorrectly localized in the colon
• throughout the intestine by E16.5
• at E13.5, mice exhibit increased proliferating cells in the intestine compared with wild-type mice
• by E16.5, no proliferation cells are found in the small intestine unlike in wild-type mice
• the number of proliferating cells in the colon is decreased compared to in wild-type mice

growth/size/body

behavior/neurological

endocrine/exocrine glands
• mice lack crypt structures due to necrosis unlike wild-type mice

embryo
• throughout the intestine by E16.5




Genotype
MGI:4946926
cn3
Allelic
Composition
ApcMin/Apc+
Tcf7l2tm1(EGFP/cre)Mrc/Tcf7l2tm2.1Mrc
Genetic
Background
involves: 129S1/Sv * 129S6/SvEvTac * 129X1/SvJ * C57BL/6J * C57BL/6NCrl
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
ApcMin mutation (12 available); any Apc mutation (154 available)
Tcf7l2tm1(EGFP/cre)Mrc mutation (0 available); any Tcf7l2 mutation (56 available)
Tcf7l2tm2.1Mrc mutation (1 available); any Tcf7l2 mutation (56 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
N
• mice do not exhibit develop intestinal adenomas





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
05/07/2024
MGI 6.23
The Jackson Laboratory