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Phenotypes Associated with This Genotype
Genotype
MGI:3511241
Allelic
Composition
Ly6atm2(RUNX1)Grau/Ly6a+
Genetic
Background
involves: 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ly6atm2(RUNX1)Grau mutation (0 available); any Ly6a mutation (22 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Morophologic analysis of myeloproliferation disorder in Ly6atm2(RUNX1)Grau/Ly6a+ mice

neoplasm
• skin lesions progressed to squamous cell carcinomas in 3 of 23 mutants by 1 year of age

hematopoietic system
• at 9-12 months of age splenomegaly is seen
• at 5-8 weeks of age there is a slight but significant decrease in myeloid progenitors in the bone marrow
• at 9-12 months of age bone marrow myeloid hyperplasia is seen
• at 9-12 months of age extramedullary hematopoiesis is seen
• at 9-12 months of age an increase in peripheral blood reticulocytes is seen
• polychromasia in peripheral blood
• at 5-8 weeks of age there is a slight but significant increase in WBC count
• at 9-12 months of age an increase in peripheral blood neutrophils is seen
• extramedullary hematopoiesis disrupts the follicular architecture of the spleen

immune system
• at 9-12 months of age splenomegaly is seen
• at 9-12 months of age bone marrow myeloid hyperplasia is seen
• at 5-8 weeks of age there is a slight but significant increase in WBC count
• at 9-12 months of age an increase in peripheral blood neutrophils is seen
• extramedullary hematopoiesis disrupts the follicular architecture of the spleen

integument
• after 4 weeks of age hyperkeratosis is seen
• at 4 weeks of age epidermal hyperplasia is seen
• after 4 weeks of age skin ulcerations appear

growth/size/body
• at 9-12 months of age splenomegaly is seen


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
01/28/2026
MGI 6.24
The Jackson Laboratory