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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Bmi1+
wild type
MGI:1857636
Summary 10 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Bmi1tm1.1(KOMP)Vlcg/Bmi1+ C57BL/6N-Bmi1tm1.1(KOMP)Vlcg/MbpMmucd MGI:6325116
ht2
Bmi1tm1Brn/Bmi1+ involves: 129P2/OlaHsd MGI:2674271
ht3
Bmi1tm1Ilw/Bmi1+ involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:3806981
ht4
Bmi1tm2Ilw/Bmi1+ involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:3806982
cn5
Bmi1tm1(cre/ERT)Mrc/Bmi1+
Ctnnb1tm1Mmt/Ctnnb1+
involves: 129S1/Sv * 129X1/SvJ MGI:3805821
cn6
Bmi1tm1(cre/ERT)Mrc/Bmi1+
Gt(ROSA)26Sortm1(DTA)Mrc/Gt(ROSA)26Sor+
involves: 129S1/Sv * 129X1/SvJ MGI:3805820
cn7
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Bmi1tm1(cre/ERT)Mrc/Bmi1+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:5495321
cx8
Pcgf2tm1Hko/Pcgf2tm1Hko
Bmi1tm1Brn/Bmi1+
involves: 129P2/OlaHsd * 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:3577617
cx9
Bmi1tm1Brn/Bmi1+
E2f6tm1Lees/E2f6tm1Lees
involves: 129P2/OlaHsd * 129S4/SvJae * C57BL/6 MGI:3790811
cx10
Bmi1tm1Brn/Bmi1+
E2f6tm1Lees/E2f6+
involves: 129P2/OlaHsd * 129S4/SvJae * C57BL/6 MGI:3790812


Genotype
MGI:6325116
ht1
Allelic
Composition
Bmi1tm1.1(KOMP)Vlcg/Bmi1+
Genetic
Background
C57BL/6N-Bmi1tm1.1(KOMP)Vlcg/MbpMmucd
Cell Lines 12981A-D5
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1.1(KOMP)Vlcg mutation (1 available); any Bmi1 mutation (31 available)
Data Sources
phenotype observed in females
phenotype observed in males
N normal phenotype
embryo

growth/size/body

homeostasis/metabolism
IMPC - TCP

vision/eye
IMPC - TCP




Genotype
MGI:2674271
ht2
Allelic
Composition
Bmi1tm1Brn/Bmi1+
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1Brn mutation (2 available); any Bmi1 mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• transformation of T13 to L1 is seen in 13% of heterozygous mice
• partial or complete transformation of C7 to T1 is seen in 31% and 19% of heterozygous mice, respectively
• transformation of L6 to S1 is seen in 50% of heterozygous mice




Genotype
MGI:3806981
ht3
Allelic
Composition
Bmi1tm1Ilw/Bmi1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1Ilw mutation (1 available); any Bmi1 mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype
• mice are indistinguishable from wild-type mice




Genotype
MGI:3806982
ht4
Allelic
Composition
Bmi1tm2Ilw/Bmi1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm2Ilw mutation (0 available); any Bmi1 mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype
• mice are indistinguishable from wild-type mice




Genotype
MGI:3805821
cn5
Allelic
Composition
Bmi1tm1(cre/ERT)Mrc/Bmi1+
Ctnnb1tm1Mmt/Ctnnb1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1(cre/ERT)Mrc mutation (2 available); any Bmi1 mutation (31 available)
Ctnnb1tm1Mmt mutation (0 available); any Ctnnb1 mutation (47 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice die 50 days following administration of tamoxifen

neoplasm
• beginning 22 days following administration of tamoxifen

digestive/alimentary system
• the number of proliferating cells within crypts is increased 15 days following administration of tamoxifen
• beginning 22 days following administration of tamoxifen

endocrine/exocrine glands
• the number of proliferating cells within crypts is increased 15 days following administration of tamoxifen




Genotype
MGI:3805820
cn6
Allelic
Composition
Bmi1tm1(cre/ERT)Mrc/Bmi1+
Gt(ROSA)26Sortm1(DTA)Mrc/Gt(ROSA)26Sor+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1(cre/ERT)Mrc mutation (2 available); any Bmi1 mutation (31 available)
Gt(ROSA)26Sortm1(DTA)Mrc mutation (1 available); any Gt(ROSA)26Sor mutation (1095 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice die 2 to 3 days following administration of tamoxifen for three consecutive days after weaning

digestive/alimentary system
• following administration of one dose of tamoxifen after weaning, mice exhibit areas of the duodenum that are devoid of crypt cells
• however, crypt cells recover by 9 months of age
• following administration of one dose of tamoxifen after weaning, mice exhibit areas of the jejunum that are devoid of crypt cells
• however, crypt cells recover by 9 months of age

growth/size/body
• following administration of one dose of tamoxifen after weaning
• however, normal weight is recovered by 9 months of age

endocrine/exocrine glands
• following administration of one dose of tamoxifen after weaning, mice exhibit areas of the duodenum that are devoid of crypt cells
• however, crypt cells recover by 9 months of age
• following administration of one dose of tamoxifen after weaning, mice exhibit areas of the jejunum that are devoid of crypt cells
• however, crypt cells recover by 9 months of age




Genotype
MGI:5495321
cn7
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Bmi1tm1(cre/ERT)Mrc/Bmi1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1(cre/ERT)Mrc mutation (2 available); any Bmi1 mutation (31 available)
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (1095 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• fully penetrant tumorigenesis when tamoxifen is injected after 3 weeks of age
• tumors in deep mesenchymal tissues of the limbs and trunk
• most tumors form adjacent to bone but some are totally in muscle
• all tumors with "clear cell" morphology




Genotype
MGI:3577617
cx8
Allelic
Composition
Pcgf2tm1Hko/Pcgf2tm1Hko
Bmi1tm1Brn/Bmi1+
Genetic
Background
involves: 129P2/OlaHsd * 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1Brn mutation (2 available); any Bmi1 mutation (31 available)
Pcgf2tm1Hko mutation (2 available); any Pcgf2 mutation (48 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial

skeleton
• acromion is poorly formed
• holes are seen in the blade of the scapula
• rudimentary ribs attached to C6
• atlas resembles the third cervical vertebra
• atlas resembles the third cervical vertebra
• ectopic ossification centers in sternum

digestive/alimentary system

growth/size/body




Genotype
MGI:3790811
cx9
Allelic
Composition
Bmi1tm1Brn/Bmi1+
E2f6tm1Lees/E2f6tm1Lees
Genetic
Background
involves: 129P2/OlaHsd * 129S4/SvJae * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1Brn mutation (2 available); any Bmi1 mutation (31 available)
E2f6tm1Lees mutation (0 available); any E2f6 mutation (13 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• transformation of T13 to L1 is seen in 77% of compound mutant mice
• partial or complete transformation of C7 to T1 is seen in 27% and 4% of compound mutant mice, respectively
• transformation of L6 to S1 is seen in 92% of compound mutant mice




Genotype
MGI:3790812
cx10
Allelic
Composition
Bmi1tm1Brn/Bmi1+
E2f6tm1Lees/E2f6+
Genetic
Background
involves: 129P2/OlaHsd * 129S4/SvJae * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1Brn mutation (2 available); any Bmi1 mutation (31 available)
E2f6tm1Lees mutation (0 available); any E2f6 mutation (13 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• transformation of T7 to T8 and T13 to L1 are seen in 4% and 50% of double heterozygous mice, respectively
• partial or complete transformation of C7 to T1 is seen in 42% and 8% of double heterozygous mice, respectively
• transformation of C5 to C6 is seen in 4% of double heterozygous mice
• transformation of L6 to S1 is seen in 73% of double heterozygous mice





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last database update
03/18/2025
MGI 6.24
The Jackson Laboratory