About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Lamc2jeb
junctional epidermolysis bullosa
MGI:3609880
Summary 3 genotypes


Genotype
MGI:4440827
hm1
Allelic
Composition
Lamc2jeb/Lamc2jeb
Genetic
Background
129X1/SvJ-Lamc2jeb
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lamc2jeb mutation (4 available); any Lamc2 mutation (70 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
limbs/digits/tail
• hyperemic footpads and ears

hearing/vestibular/ear
• the auricular cartilage is severely distorted due to contracture from scarring
• in the pinna

immune system
• in the pinna

skeleton
• substantial pitting by SEM
• substantial pitting in incisors by SEM
• the auricular cartilage is severely distorted due to contracture from scarring
• at 12 months of age, as mice develop skin lesions
• at 12 months of age, as mice develop skin lesions

craniofacial
• substantial pitting by SEM
• substantial pitting in incisors by SEM
• the auricular cartilage is severely distorted due to contracture from scarring

respiratory system
• decrease in resistance and/or elastance and overall lung restriction at 9 months of age
• decrease in resistance and/or elastance and overall lung restriction at 9 months of age

integument
• rudimentary or absent hemidesmosomes in the skin by TEM
• on ears and foot pads
• on ears
• dermal-epidermal separation in skin on the ears and tail
• subepidermal separation on tail and foot pads, with little to no dermal inflammation present
• hyperemic footpads, tail and ears
• dermal epidermal separation is adjacent to ulcerations in the dorsal thoracic skin
• subepidermal separation on tail and foot pads, with little to no dermal inflammation present
• ulcerated ears and tail
• marked mechanical fragility of the skin

growth/size/body
• substantial pitting by SEM
• substantial pitting in incisors by SEM
• the auricular cartilage is severely distorted due to contracture from scarring

cellular
• separation within the lamina lucida

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
junctional epidermolysis bullosa non-Herlitz type DOID:0060738 OMIM:226650
J:158873




Genotype
MGI:5433633
hm2
Allelic
Composition
Lamc2jeb/Lamc2jeb
Genetic
Background
B6.129X1-Lamc2jeb/Dcr
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lamc2jeb mutation (4 available); any Lamc2 mutation (70 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
integument
• separation of the dermis from epidermis of the tail requires much less tensile strength for homozygotes at the earliest timepoint assessed, 4 weeks of age, and the requisite tensile strength decreases between 6 and 11 weeks in males and between 15 and 19 weeks in females




Genotype
MGI:4440828
ht3
Allelic
Composition
Lamc2jeb/Lamc2tm1Uit
Genetic
Background
(129X1/SvJ-Lamc2jeb x B6.Cg-Lamc2tm1Uit)F1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lamc2jeb mutation (4 available); any Lamc2 mutation (70 available)
Lamc2tm1Uit mutation (2 available); any Lamc2 mutation (70 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
integument
• dermal-epidermal separation
• develop characteristic blistering by 2 months of age





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
04/16/2024
MGI 6.23
The Jackson Laboratory