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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Cdx1+
wild type
MGI:2154546
Summary 6 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Cdx1tm1Pgr/Cdx1+ involves: 129 * C57BL/6 MGI:3817890
ht2
Cdx1tm1Lhn/Cdx1+ involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:3817887
ht3
Cdx1tm2Lhn/Cdx1+ involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * SJL MGI:3837955
ht4
Cdx1tm3Lhn/Cdx1+ involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * SJL MGI:3837957
cx5
Cdx1tm1Lhn/Cdx1+
Rargtm1Ipc/Rargtm1Ipc
involves: 129 * C57BL/6 MGI:3817900
cx6
Cdx1tm1Pgr/Cdx1+
Rargtm1Ipc/Rargtm1Ipc
involves: 129 * C57BL/6 MGI:3817898


Genotype
MGI:3817890
ht1
Allelic
Composition
Cdx1tm1Pgr/Cdx1+
Genetic
Background
involves: 129 * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdx1tm1Pgr mutation (1 available); any Cdx1 mutation (14 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• 56% of mice exhibit possible transformation of the C2 vertebrae with slightly narrower C1 neural arches and/or a short cartilaginous ectopic anterior arch of the atlas on C2
• 26% of mice have neural arch fusions of V1 to V4




Genotype
MGI:3817887
ht2
Allelic
Composition
Cdx1tm1Lhn/Cdx1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdx1tm1Lhn mutation (0 available); any Cdx1 mutation (14 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• a small posterior extension of the basioccipital bone occurs in 12% of mice
• 12 % of mice exhibit possible transformation of the C2 vertebrae with slightly narrower C1 neural arches and/or a short cartilaginous ectopic anterior arch of the atlas on C2

craniofacial
• a small posterior extension of the basioccipital bone occurs in 12% of mice




Genotype
MGI:3837955
ht3
Allelic
Composition
Cdx1tm2Lhn/Cdx1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdx1tm2Lhn mutation (0 available); any Cdx1 mutation (14 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• 13% of mice exhibit an anterior arch of the atlas that is fused to V2
• 40% of mice exhibit a C2 to C1 transformation
• 13% of mice exhibit a malformed C2 neural arch




Genotype
MGI:3837957
ht4
Allelic
Composition
Cdx1tm3Lhn/Cdx1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdx1tm3Lhn mutation (0 available); any Cdx1 mutation (14 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• 42% of mice exhibit an anterior arch of the atlas that is fused to V2
• 42% of mice exhibit an anterior arch of the atlas that is fused to V2
• 12% of mice exhibit a malformed C2 neural arch
• 6% of mice exhibit a neural arch fusion of vertebrae 1 and 2




Genotype
MGI:3817900
cx5
Allelic
Composition
Cdx1tm1Lhn/Cdx1+
Rargtm1Ipc/Rargtm1Ipc
Genetic
Background
involves: 129 * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdx1tm1Lhn mutation (0 available); any Cdx1 mutation (14 available)
Rargtm1Ipc mutation (2 available); any Rarg mutation (150 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• 33% of mice exhibit possible transformation of the C2 vertebrae with slightly narrower C1 neural arches and/or a short cartilaginous ectopic anterior arch of the atlas on C2
• 11% of mice have thick neural arches in the vertebrae
• 11% of mice have neural arch fusions of V1 to V4




Genotype
MGI:3817898
cx6
Allelic
Composition
Cdx1tm1Pgr/Cdx1+
Rargtm1Ipc/Rargtm1Ipc
Genetic
Background
involves: 129 * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdx1tm1Pgr mutation (1 available); any Cdx1 mutation (14 available)
Rargtm1Ipc mutation (2 available); any Rarg mutation (150 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• 90% of mice exhibit possible transformation of the C2 vertebrae with slightly narrower C1 neural arches and/or a short cartilaginous ectopic anterior arch of the atlas on C2
• 60% of mice have thick neural arches in the vertebrae
• 30% of mice have posterior spinous processes on V10 and sometimes V9
• 40% of mice have neural arch fusions of V1 to V4





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