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Phenotypes Associated with This Genotype
Genotype
MGI:3045952
Allelic
Composition
Kittm2Ber/Kittm2Ber
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Kittm2Ber mutation (0 available); any Kit mutation (175 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• ~20% died within 12 hours of birth
• surviving mice lived for at least 1 year

pigmentation
• in regions where the coat was white, melanin pigment was absent from the hair shafts and melanocytes were absent from the hair bulbs
• observed in 10% to 15% of mice
• >90% of the body surface area white except around the ear

digestive/alimentary system
N
• neither stomach or intestinal distension were observed as was in Kittm3Ber/tm3Ber mice

hematopoietic system
• reduced number of mast cells in the peritoneal cavity, and the stomach
• normal number of mast cell precursor cells and it was possible to derive mast cells from the bone marrow

immune system
N
• splenomegaly was not observed, as it was in Kittm3Ber/tm3Ber mice
• reduced number of mast cells in the peritoneal cavity, and the stomach
• normal number of mast cell precursor cells and it was possible to derive mast cells from the bone marrow

reproductive system
N
• mice were fully fertile

integument
• in regions where the coat was white, melanin pigment was absent from the hair shafts and melanocytes were absent from the hair bulbs
• observed in 10% to 15% of mice
• >90% of the body surface area white except around the ear


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