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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Spta1sph-4J
spherocytosis 4 Jackson
MGI:3798219
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Spta1sph-4J/Spta1sph-4J C57BL/6J-Spta1sph-4J/Llp MGI:4437865


Genotype
MGI:4437865
hm1
Allelic
Composition
Spta1sph-4J/Spta1sph-4J
Genetic
Background
C57BL/6J-Spta1sph-4J/Llp
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Spta1sph-4J mutation (0 available); any Spta1 mutation (147 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• massive splenomegaly results from extensive expansion of the red pulp
• extramedullary hematopoietic foci are found in the liver
• severe hemolytic anemia with significantly decreased red blood cell count, hemoglobin and hematocrit
• high numbers of large reticulocytes and small spherocytes, anisocytosis pholychromatophilia due to a high degree of reticulocytosis, poikilocytosis with many bizarrely shaped cells and fragments, increased red blood cell distribution width, and spherocytic red blood cells with membrane loss
• approximately one third of normal red blood cell concentration at 6 weeks of age
• approximately one thrid the normal level at 6 weeks of age
• approximately one thrid the normal level of hemoglobin at 6 weeks of age

immune system
• massive splenomegaly results from extensive expansion of the red pulp

homeostasis/metabolism
• approximately three times normal levels
• plasma iron levels are significantly higher than normal
• extensive iron accumulation in the kidney

liver/biliary system

renal/urinary system
• extensive iron accumulation in the kidney

growth/size/body
• massive splenomegaly results from extensive expansion of the red pulp





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
10/29/2024
MGI 6.24
The Jackson Laboratory