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Phenotypes Associated with This Genotype
Genotype
MGI:3574393
cx12
Allelic
Composition
Dcntm1Ioz/Dcn+
Trp53tm1Brd/Trp53tm1Brd
Genetic
Background
involves: 129/Sv * Black Swiss * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Dcntm1Ioz mutation (0 available); any Dcn mutation (29 available)
Trp53tm1Brd mutation (5 available); any Trp53 mutation (238 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• these mutants survive longer than double homozygotes with a 50% mean survival rate of ~6 months, similar to that observed in Trp53tm1Brd mice; surprisingly, no increased incidence of infections is observed

neoplasm
• similar to double homozygotes, these mutants are predisposed to an accelerated mortality due to increased tumorigenesis, with no differences between male and female occurrence
• the majority of tumors are high-grade lymphomas arising from the transformation of immature thymocytes
• tumor cells are highly invasive and infiltrate the soft tissues of mediastinum, the salivary glands, the periaortic spaces, the pericardium, and the bronchial wall

respiratory system
• mutants with thymic lymphomas die of pericardial compression or respiratory distress

endocrine/exocrine glands
• the majority of tumors are high-grade lymphomas arising from the transformation of immature thymocytes
• tumor cells are highly invasive and infiltrate the soft tissues of mediastinum, the salivary glands, the periaortic spaces, the pericardium, and the bronchial wall

immune system
• the majority of tumors are high-grade lymphomas arising from the transformation of immature thymocytes
• tumor cells are highly invasive and infiltrate the soft tissues of mediastinum, the salivary glands, the periaortic spaces, the pericardium, and the bronchial wall

hematopoietic system
• the majority of tumors are high-grade lymphomas arising from the transformation of immature thymocytes
• tumor cells are highly invasive and infiltrate the soft tissues of mediastinum, the salivary glands, the periaortic spaces, the pericardium, and the bronchial wall


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)
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last database update
03/24/2026
MGI 6.24
The Jackson Laboratory