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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Ncam1+
wild type
MGI:2182572
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Ncam1tm1Klc/Ncam1+ either: (involves: 129 * C57BL/6J) or (involves: 129 * CD-1) MGI:3687198
ht2
Ncam1tm2Mag/Ncam1+ involves: 129 * C57BL/6 MGI:2182571
cx3
Mical1tm1.2Past/Mical1+
Ncam1tm1Cgn/Ncam1+
involves: 129 * 129P2/OlaHsd MGI:7628684


Genotype
MGI:3687198
ht1
Allelic
Composition
Ncam1tm1Klc/Ncam1+
Genetic
Background
either: (involves: 129 * C57BL/6J) or (involves: 129 * CD-1)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ncam1tm1Klc mutation (0 available); any Ncam1 mutation (63 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• mice have a less pronounced bifurctation of the CA3 region than homozygotes




Genotype
MGI:2182571
ht2
Allelic
Composition
Ncam1tm2Mag/Ncam1+
Genetic
Background
involves: 129 * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ncam1tm2Mag mutation (0 available); any Ncam1 mutation (63 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• fetuses carrying the mutation in the heterozygous state die in utero
• chimeric embryos show abnormalities as early as e8.5, including severe growth retardation and morphological defects




Genotype
MGI:7628684
cx3
Allelic
Composition
Mical1tm1.2Past/Mical1+
Ncam1tm1Cgn/Ncam1+
Genetic
Background
involves: 129 * 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mical1tm1.2Past mutation (0 available); any Mical1 mutation (49 available)
Ncam1tm1Cgn mutation (1 available); any Ncam1 mutation (63 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
nervous system
• mice exhibit an increase in the number of mossy fibers in the stratum pyramidale indicating that the characteristic lamination pattern of mossy fibers emanating from the dentate gyrus is altered





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last database update
07/08/2026
MGI 6.24
The Jackson Laboratory