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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Cbfbtm1Itan
targeted mutation 1, Ichiro Taniuchi
MGI:3761812
Summary 8 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Cbfbtm1Itan/Cbfbtm1Itan
Tg(Lck-cre)1Cwi/0
involves: 129P2/OlaHsd MGI:3761838
cn2
Cbfbtm1Itan/Cbfbtm1Itan
Zbtb7btm2Litt/Zbtb7b+
Tg(Lck-cre)1Cwi/0
involves: 129P2/OlaHsd * C57BL/6 MGI:3821708
cn3
Cbfbtm1Itan/Cbfbtm1Itan
Zbtb7btm2Litt/Zbtb7btm1.2Litt
Tg(Lck-cre)1Cwi/0
involves: 129P2/OlaHsd * C57BL/6 MGI:3821709
cn4
Cbfbtm1Itan/Cbfbtm1Itan
Tg(KRT14-cre)1Amc/0
involves: 129P2/OlaHsd * C57BL/6 * CBA MGI:6455789
cn5
Cbfbtm1Itan/Cbfbtm1Itan
Tg(Cd4-cre)1Cwi/0
involves: 129P2/OlaHsd * C57BL/6 * DBA/2 MGI:4452099
cn6
Cbfbtm1Itan/Cbfbtm1Itan
Rr94tm3.1Litt/Rr94tm3.1Litt
Tg(Cd4-cre)1Cwi/0
involves: 129P2/OlaHsd * C57BL/6 * DBA/2 * FVB/N MGI:4452098
cn7
Cbfbtm1Itan/Cbfbtm1Itan
Tg(Sp7-tTA,tetO-EGFP/cre)1Amc/0
involves: 129P2/OlaHsd * CD-1 MGI:8248845
cn8
Cbfbtm1Itan/Cbfbtm1Itan
Tg(Col1a1-cre)1Kry/0
involves: 129P2/OlaHsd * FVB/N MGI:8248843


Genotype
MGI:3761838
cn1
Allelic
Composition
Cbfbtm1Itan/Cbfbtm1Itan
Tg(Lck-cre)1Cwi/0
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cbfbtm1Itan mutation (1 available); any Cbfb mutation (37 available)
Tg(Lck-cre)1Cwi mutation (3 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• 2 fold decrease in total number
• slightly increased levels of the Th-2 cytokine IL-4 are produced when nave T cells are activated in vitro
• a small subset of T cells produce both IL-4 and IFN-gamma when nave T cells are cultured under Th1 polarizing conditions
• very few CD8-positive T cells are found in the thymus
• increase in DP T cell due to reduced ability of T cell precursors to mature past double positive stage

hematopoietic system
• 2 fold decrease in total number
• slightly increased levels of the Th-2 cytokine IL-4 are produced when nave T cells are activated in vitro
• a small subset of T cells produce both IL-4 and IFN-gamma when nave T cells are cultured under Th1 polarizing conditions
• very few CD8-positive T cells are found in the thymus
• increase in DP T cell due to reduced ability of T cell precursors to mature past double positive stage

endocrine/exocrine glands




Genotype
MGI:3821708
cn2
Allelic
Composition
Cbfbtm1Itan/Cbfbtm1Itan
Zbtb7btm2Litt/Zbtb7b+
Tg(Lck-cre)1Cwi/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cbfbtm1Itan mutation (1 available); any Cbfb mutation (37 available)
Tg(Lck-cre)1Cwi mutation (3 available)
Zbtb7btm2Litt mutation (2 available); any Zbtb7b mutation (26 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• the number of HSAhiCD69+ and HSAhi TCRbetahi positively selected thymocytes are approximately 20% of those in littermate control or Zbtb7b-deficient mice
• absolute numbers of CD4+ single positive mature thymocytes are reduced by 5 to 10 fold compared to controls
• however, the percentage of CD4+ T cells in peripheral lymph nodes is only slightly reduced

hematopoietic system
• the number of HSAhiCD69+ and HSAhi TCRbetahi positively selected thymocytes are approximately 20% of those in littermate control or Zbtb7b-deficient mice
• absolute numbers of CD4+ single positive mature thymocytes are reduced by 5 to 10 fold compared to controls
• however, the percentage of CD4+ T cells in peripheral lymph nodes is only slightly reduced




Genotype
MGI:3821709
cn3
Allelic
Composition
Cbfbtm1Itan/Cbfbtm1Itan
Zbtb7btm2Litt/Zbtb7btm1.2Litt
Tg(Lck-cre)1Cwi/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cbfbtm1Itan mutation (1 available); any Cbfb mutation (37 available)
Tg(Lck-cre)1Cwi mutation (3 available)
Zbtb7btm1.2Litt mutation (1 available); any Zbtb7b mutation (26 available)
Zbtb7btm2Litt mutation (2 available); any Zbtb7b mutation (26 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• the number of HSAhiCD69+ and HSAhi TCRbetahi positively selected thymocytes are approximately 20% of those in littermate control or Zbtb7b-deficient mice
• absolute numbers of CD4+ single positive mature thymocytes are reduced between 5-10 fold compared to controls
• however, the percentage of CD4+ T cells in peripheral lymph nodes is only slightly reduced

immune system
• the number of HSAhiCD69+ and HSAhi TCRbetahi positively selected thymocytes are approximately 20% of those in littermate control or Zbtb7b-deficient mice
• absolute numbers of CD4+ single positive mature thymocytes are reduced between 5-10 fold compared to controls
• however, the percentage of CD4+ T cells in peripheral lymph nodes is only slightly reduced




Genotype
MGI:6455789
cn4
Allelic
Composition
Cbfbtm1Itan/Cbfbtm1Itan
Tg(KRT14-cre)1Amc/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cbfbtm1Itan mutation (1 available); any Cbfb mutation (37 available)
Tg(KRT14-cre)1Amc mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
• at E15.0 in some mice contact between primary and secondary palates is seen but mesenchymal confluence is not yet present and in others contact is absent
• at E16.0, contact between primary and secondary palates is absent in all mice
• at E15.0 there is partial contact but no fusion of the epithelium at the boundary between the primary and secondary palates and proliferation is increased and apoptosis decreased in the epithelium
• partial submucous cleft with retained epithelial remnants at the anterior-most region of the secondary palate at P0
• anterior cleft between the primary and secondary palates at P0 and P50 with the secondary palate failing to make contact with the primary palate and the nasal septum
• anterior cleft is seen in all mice at P0 and increases in size by P50
• in culture treatment with TGFB3 beads or folic acid rescues palatal cleft in many explants

digestive/alimentary system
• at E15.0 in some mice contact between primary and secondary palates is seen but mesenchymal confluence is not yet present and in others contact is absent
• at E16.0, contact between primary and secondary palates is absent in all mice
• at E15.0 there is partial contact but no fusion of the epithelium at the boundary between the primary and secondary palates and proliferation is increased and apoptosis decreased in the epithelium
• partial submucous cleft with retained epithelial remnants at the anterior-most region of the secondary palate at P0
• anterior cleft between the primary and secondary palates at P0 and P50 with the secondary palate failing to make contact with the primary palate and the nasal septum
• anterior cleft is seen in all mice at P0 and increases in size by P50
• in culture treatment with TGFB3 beads or folic acid rescues palatal cleft in many explants

growth/size/body
• at E15.0 in some mice contact between primary and secondary palates is seen but mesenchymal confluence is not yet present and in others contact is absent
• at E16.0, contact between primary and secondary palates is absent in all mice
• at E15.0 there is partial contact but no fusion of the epithelium at the boundary between the primary and secondary palates and proliferation is increased and apoptosis decreased in the epithelium
• partial submucous cleft with retained epithelial remnants at the anterior-most region of the secondary palate at P0
• anterior cleft between the primary and secondary palates at P0 and P50 with the secondary palate failing to make contact with the primary palate and the nasal septum
• anterior cleft is seen in all mice at P0 and increases in size by P50
• in culture treatment with TGFB3 beads or folic acid rescues palatal cleft in many explants




Genotype
MGI:4452099
cn5
Allelic
Composition
Cbfbtm1Itan/Cbfbtm1Itan
Tg(Cd4-cre)1Cwi/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cbfbtm1Itan mutation (1 available); any Cbfb mutation (37 available)
Tg(Cd4-cre)1Cwi mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• slight reduction in number of mature T cells in the thymus
• Cbfbeta protein is detectable in T cells of the thymus but not the periphery
• significant levels of the Th-2 cytokine IL-4 are produced when nave T cells are activated in vitro
• some T cells produce both IL-4 and IFN-gamma when nave T cells are cultured under Th1 polarizing conditions
• vast majority of CD8-positive T cells in the periphery also express CD4 (J:125953)
• CD8+ T cells exhibit a de-repression of CD4 expression unlike in wild-type mice (J:158962)
• reduced number of single positive CD8 T cells
• at least 10 fold higher levels in the serum
• at least 10 fold higher levels in the serum
• at least 10 fold higher levels of IgG1 in the serum
• an asthma-like disease occurs with lymphocytes and eosinophils infiltrating the bronchioles, perivascular space, and the alveolar septae

hematopoietic system
• slight reduction in number of mature T cells in the thymus
• Cbfbeta protein is detectable in T cells of the thymus but not the periphery
• significant levels of the Th-2 cytokine IL-4 are produced when nave T cells are activated in vitro
• some T cells produce both IL-4 and IFN-gamma when nave T cells are cultured under Th1 polarizing conditions
• vast majority of CD8-positive T cells in the periphery also express CD4 (J:125953)
• CD8+ T cells exhibit a de-repression of CD4 expression unlike in wild-type mice (J:158962)
• reduced number of single positive CD8 T cells
• at least 10 fold higher levels in the serum
• at least 10 fold higher levels in the serum
• at least 10 fold higher levels of IgG1 in the serum

respiratory system
• an asthma-like disease occurs with lymphocytes and eosinophils infiltrating the bronchioles, perivascular space, and the alveolar septae




Genotype
MGI:4452098
cn6
Allelic
Composition
Cbfbtm1Itan/Cbfbtm1Itan
Rr94tm3.1Litt/Rr94tm3.1Litt
Tg(Cd4-cre)1Cwi/0
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6 * DBA/2 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cbfbtm1Itan mutation (1 available); any Cbfb mutation (37 available)
Rr94tm3.1Litt mutation (0 available); any Rr94 mutation (0 available)
Tg(Cd4-cre)1Cwi mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice exhibit a population of CD4lo8+ double positive T cells in the mature thymocyte compartment and the spleen unlike in wild-type mice
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice
• the percentage of CD4 single positive cell in the thymus and spleen is decreased compared to in wild-type mice
• the percentage of CD8 single positive cell in the thymus and spleen is increased compared to in wild-type mice

hematopoietic system
• mice exhibit a population of CD4lo8+ double positive T cells in the mature thymocyte compartment and the spleen unlike in wild-type mice
• the ratio of CD4 single positive to CD8 single positive T cells is inverted compared to in wild-type mice
• the percentage of CD4 single positive cell in the thymus and spleen is decreased compared to in wild-type mice
• the percentage of CD8 single positive cell in the thymus and spleen is increased compared to in wild-type mice




Genotype
MGI:8248845
cn7
Allelic
Composition
Cbfbtm1Itan/Cbfbtm1Itan
Tg(Sp7-tTA,tetO-EGFP/cre)1Amc/0
Genetic
Background
involves: 129P2/OlaHsd * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cbfbtm1Itan mutation (1 available); any Cbfb mutation (37 available)
Tg(Sp7-tTA,tetO-EGFP/cre)1Amc mutation (7 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• the skull is undercalcified and shows patent fontanelles
• severely underdeveloped in newborns due to decreased ossification
• the underdevelopment of the hyoid bone is still apparent in 6-day-old mice
• severely affected teeth
• incisors are completely absent or severely underdeveloped in mice at 17 days and 10 weeks of age
• molars are underdeveloped in mice at 17 days and 10 weeks of age
• incisors and molars are underdeveloped at 17 days and 10 weeks of age
• 10-week-old mice exhibit supernumerary teeth-like phenotype
• mandibula is severely underdeveloped in newborns due to decreased ossification
• mandibular retrognathism
• underdeveloped mandibles and mandibular retrognathism result in a large gap inside the oral cavity causing an anterior open bite
• severely underdeveloped in newborns due to decreased ossification
• severely underdeveloped in newborns due to decreased ossification
• underdeveloped long bones, leading to severe deformities
• hypoplasia/aplasia of clavicles
• shorter medullary cavity in 10-week-old mice
• mice show a decrease in osteoblast numbers, however the number of osteoclasts is not affected
• femurs show an almost complete lack of trabecular bone
• every bone, except vertebrae and sternum, in 6-day-old mice is severely underdeveloped
• primary calvarial cells show a decreased number of osteoblasts after 14 days of culture, indicating inhibited osteoblastogenesis
• proliferative zone is decreased and disorganized
• reduction in proliferating chondrocytes in both the resting and proliferation zones
• lack of hypertrophic chondrocytes
• reduction in chondrocytes of the hypertrophic region of the growth plate
• growth plate is shorted
• newborns have decreased cartilage and underdeveloped growth zones
• columns of proliferating and hypertrophic chondrocytes are less organized
• mice exhibit decreased bone mineralization and skeletal deformities
• primary calvarial cells show a reduction in mineralization after 21 days of culture
• femurs show decreased growth and reduced ossification in 3-week-old mice
• mandibula, hyoid bone, thyroid cartilage, and cricoid cartilage in newborns is underdeveloped due to decreased ossification
• mice show delayed bone ossification, with newborns having decreased ossification and endochondral bone formation
• tibias show impaired endochondral bone ossification
• tibias show impaired intramembranous bone ossification

cellular
• primary calvarial cells show a decreased number of osteoblasts after 14 days of culture, indicating inhibited osteoblastogenesis

craniofacial
• the skull is undercalcified and shows patent fontanelles
• severely underdeveloped in newborns due to decreased ossification
• the underdevelopment of the hyoid bone is still apparent in 6-day-old mice
• severely affected teeth
• incisors are completely absent or severely underdeveloped in mice at 17 days and 10 weeks of age
• molars are underdeveloped in mice at 17 days and 10 weeks of age
• incisors and molars are underdeveloped at 17 days and 10 weeks of age
• 10-week-old mice exhibit supernumerary teeth-like phenotype
• mandibula is severely underdeveloped in newborns due to decreased ossification
• mandibular retrognathism
• underdeveloped mandibles and mandibular retrognathism result in a large gap inside the oral cavity causing an anterior open bite

growth/size/body
• severely underdeveloped in newborns due to decreased ossification
• the underdevelopment of the hyoid bone is still apparent in 6-day-old mice
• severely affected teeth
• incisors are completely absent or severely underdeveloped in mice at 17 days and 10 weeks of age
• molars are underdeveloped in mice at 17 days and 10 weeks of age
• incisors and molars are underdeveloped at 17 days and 10 weeks of age
• 10-week-old mice exhibit supernumerary teeth-like phenotype
• mandibula is severely underdeveloped in newborns due to decreased ossification
• mandibular retrognathism
• underdeveloped mandibles and mandibular retrognathism result in a large gap inside the oral cavity causing an anterior open bite
• 3-week-old mice exhibit disproportionally short stature

limbs/digits/tail

respiratory system
• severely underdeveloped in newborns due to decreased ossification
• severely underdeveloped in newborns due to decreased ossification

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
cleidocranial dysplasia DOID:13994 OMIM:119600
OMIM:216330
J:211343




Genotype
MGI:8248843
cn8
Allelic
Composition
Cbfbtm1Itan/Cbfbtm1Itan
Tg(Col1a1-cre)1Kry/0
Genetic
Background
involves: 129P2/OlaHsd * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cbfbtm1Itan mutation (1 available); any Cbfb mutation (37 available)
Tg(Col1a1-cre)1Kry mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• shorter stature

skeleton
• bone formation is severely inhibited, however, the clavicle, mandibles and teeth, and intramembranous bone formation are not dramatically affected and growth plate development is normal





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last database update
10/07/2025
MGI 6.24
The Jackson Laboratory