About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Cdkn1a+
wild type
MGI:2436085
Summary 6 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Cdkn1atm1(HBsAg)Xya/Cdkn1a+ either: (involves: 129S6/SvEvTac * C57BL/6) or (involves: 129S6/SvEvTac * Black Swiss) MGI:3046834
ht2
Cdkn1atm2(HBx)Xya/Cdkn1a+ either: (involves: 129S6/SvEvTac * C57BL/6) or (involves: 129S6/SvEvTac * Black Swiss) MGI:3046835
ht3
Cdkn1atm1Tyj/Cdkn1a+ involves: 129S1/SvImJ * 129S2/SvPas * C57BL/6J MGI:4420544
ht4
Cdkn1atm1Led/Cdkn1a+ involves: 129S6/SvEvTac MGI:3760239
cx5
Cdkn1atm1Hpw/Cdkn1a+
Trp53tm2Wahl/Trp53tm2Wahl
involves: 129S4/SvJae * 129X1/SvJ * C57BL/6 MGI:5285193
cx6
Cdkn1aem1Swei/Cdkn1a+
Dph1em1Swei/Dph1em2Swei
involves: C57BL/6 MGI:7645772


Genotype
MGI:3046834
ht1
Allelic
Composition
Cdkn1atm1(HBsAg)Xya/Cdkn1a+
Genetic
Background
either: (involves: 129S6/SvEvTac * C57BL/6) or (involves: 129S6/SvEvTac * Black Swiss)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdkn1atm1(HBsAg)Xya mutation (0 available); any Cdkn1a mutation (63 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• hepatocellular carcinoma (HCC) observed in 53.3% of male mice between 15 and 24 months of age, but not in any female mice of the same age
• no metastases were detected
• HCC was multifocal with most mice exhibiting1 to 2 highly vascularized large tumors (0.5 to 2.5 cm) and many smaller tumors distributed throughout
• moderately well-differentiated HCC were made of eosinophilic cells and compressed the neighboring non-tumorous liver parenchyma

liver/biliary system
• observed in some mice
• hepatocellular carcinoma (HCC) observed in 53.3% of male mice between 15 and 24 months of age, but not in any female mice of the same age
• no metastases were detected
• HCC was multifocal with most mice exhibiting1 to 2 highly vascularized large tumors (0.5 to 2.5 cm) and many smaller tumors distributed throughout
• moderately well-differentiated HCC were made of eosinophilic cells and compressed the neighboring non-tumorous liver parenchyma

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
hepatocellular carcinoma DOID:684 OMIM:114550
J:88078




Genotype
MGI:3046835
ht2
Allelic
Composition
Cdkn1atm2(HBx)Xya/Cdkn1a+
Genetic
Background
either: (involves: 129S6/SvEvTac * C57BL/6) or (involves: 129S6/SvEvTac * Black Swiss)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdkn1atm2(HBx)Xya mutation (0 available); any Cdkn1a mutation (63 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• hepatocellular carcinoma observed in 60.0% of male mice and in 45.5% of female mice after 18 months of age
• no metastases were detected
• HCC was multifocal with most mice exhibiting1 to 2 highly vascularized large tumors (0.5 to 2.5 cm) and many smaller tumors distributed throughout
• HCC compressing adjacent normal hepatocytes observed after 18 months of age and typically associated with fatty liver and inflammation

liver/biliary system
• observed in some mice
• hepatocellular carcinoma observed in 60.0% of male mice and in 45.5% of female mice after 18 months of age
• no metastases were detected
• HCC was multifocal with most mice exhibiting1 to 2 highly vascularized large tumors (0.5 to 2.5 cm) and many smaller tumors distributed throughout
• HCC compressing adjacent normal hepatocytes observed after 18 months of age and typically associated with fatty liver and inflammation

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
hepatocellular carcinoma DOID:684 OMIM:114550
J:88078




Genotype
MGI:4420544
ht3
Allelic
Composition
Cdkn1atm1Tyj/Cdkn1a+
Genetic
Background
involves: 129S1/SvImJ * 129S2/SvPas * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdkn1atm1Tyj mutation (3 available); any Cdkn1a mutation (63 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• irradiated mice develop more tumors per mouse, 2.2-fold more benign tumors, multiple malignant tumors per mouse, and a broader spectrum of tumors than similarly treated wild-type mice
• however, the latency to tumor development and the percent of mice bearing tumors is normal
• irradiated mice develop multiple malignant tumors per mouse unlike similarly treated wild-type mice

homeostasis/metabolism
• irradiated mice develop more tumors per mouse, 2.2-fold more benign tumors, multiple malignant tumors per mouse, and a broader spectrum of tumors than similarly treated wild-type mice
• however, the latency to tumor development and the percent of mice bearing tumors is normal




Genotype
MGI:3760239
ht4
Allelic
Composition
Cdkn1atm1Led/Cdkn1a+
Genetic
Background
involves: 129S6/SvEvTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdkn1atm1Led mutation (1 available); any Cdkn1a mutation (63 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
integument
• the proportion of awl and auchene hairs are increased relative to in wild-type mice
• the proportion of awl and auchene hairs are increased relative to in wild-type mice
• the proportion of zigzag hair is reduced relative to in wild-type mice




Genotype
MGI:5285193
cx5
Allelic
Composition
Cdkn1atm1Hpw/Cdkn1a+
Trp53tm2Wahl/Trp53tm2Wahl
Genetic
Background
involves: 129S4/SvJae * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdkn1atm1Hpw mutation (1 available); any Cdkn1a mutation (63 available)
Trp53tm2Wahl mutation (0 available); any Trp53 mutation (237 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• compared with irradiated Trp53tm2Wahl homozygotes

homeostasis/metabolism
• compared with irradiated Trp53tm2Wahl homozygotes




Genotype
MGI:7645772
cx6
Allelic
Composition
Cdkn1aem1Swei/Cdkn1a+
Dph1em1Swei/Dph1em2Swei
Genetic
Background
involves: C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cdkn1aem1Swei mutation (0 available); any Cdkn1a mutation (63 available)
Dph1em1Swei mutation (0 available); any Dph1 mutation (26 available)
Dph1em2Swei mutation (0 available); any Dph1 mutation (26 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
craniofacial
N
• fused palatal shelves in E15.5 embryos





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
01/06/2026
MGI 6.24
The Jackson Laboratory