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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Rpa1+
wild type
MGI:2440056
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Rpa1tm1b(KOMP)Wtsi/Rpa1+ C57BL/6N-Rpa1tm1b(KOMP)Wtsi/J MGI:5631499
ht2
Rpa1tm1Wed/Rpa1+ involves: 129/Sv * C57BL/6J * SJL MGI:3590159


Genotype
MGI:5631499
ht1
Allelic
Composition
Rpa1tm1b(KOMP)Wtsi/Rpa1+
Genetic
Background
C57BL/6N-Rpa1tm1b(KOMP)Wtsi/J
Cell Lines EPD0395_5_A02
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rpa1tm1b(KOMP)Wtsi mutation (1 available); any Rpa1 mutation (54 available)
Data Sources
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system

growth/size/body

hematopoietic system

homeostasis/metabolism




Genotype
MGI:3590159
ht2
Allelic
Composition
Rpa1tm1Wed/Rpa1+
Genetic
Background
involves: 129/Sv * C57BL/6J * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rpa1tm1Wed mutation (0 available); any Rpa1 mutation (54 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• heterozygotes have significantly lower survival than their wild-type littermates with loss of heterozygotes beginning around 4 months, greater than 20% loss by 12 months, and about 60% loss by 2 years

neoplasm
• 9 of 14 heterozygotes developed lymphomas and 4 of these were highly disseminated

immune system
• all heterozygotes between 4 and 14 months display marked lymphoid hyperplasia

cellular
• tumors in heterozygotes contain multiple chromosomal alterations with most showing gains of the entire chromosomes 6 and 15
• heterozygous MEFs have an increased frequency of abnormal karyotypes and chromosomal breaks and impaired double strand break repair

hematopoietic system
• hematopoiesis in the bone marrow is abnormal
• all heterozygotes between 4 and 14 months display marked lymphoid hyperplasia





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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
03/31/2026
MGI 6.24
The Jackson Laboratory