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Phenotypes Associated with This Genotype
Genotype
MGI:3851340
hm2
Allelic
Composition
Fgf23tm1Blan/Fgf23tm1Blan
Genetic
Background
involves: 129/Sv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Fgf23tm1Blan mutation (0 available); any Fgf23 mutation (18 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• bodyweight of 4 week old mice is less than half that of controls despite being on a diet rich in calcium and lactose

hematopoietic system
• spleens of 4 week old mice are atrophied compared to controls

homeostasis/metabolism
• serum urea levels are twice that of controls when fed a high calcium diet
• blood sugar levels are about a third lower than controls
• 9 out of 12 mice have undetectable levels of serum insulin with the 3 other mice having insulin levels well below controls
• serum calcium levels are elevated (2.97 mmol/l vs. 2.55 mmol/l) when fed a high calcium diet
• serum phosphorous levels are extremely elevated (3.38 mmol/l vs. 5.06 mmol/l) when fed a high calcium diet
• mice have levels of serum alkaline phosphatase that are 3-fold higher than controls when fed a high calcium diet
• serum albumin levels are reduced when mice are fed a high calcium diet
• mice have 30% less rise in glucose levels after a glucose challenge

immune system
• spleens of 4 week old mice are atrophied compared to controls

respiratory system
• diffuse calcification of the main bronchus is occasionally observed

skeleton
• mice have reduced volumetric bone mineral density of the femoral shaft and femoral metaphysic
• thinning of mineralized cortical bone
• mice have reduced volumetric bone mineral density of the femoral shaft and femoral metaphysic and thinning of mineralized cortical bone
• growth plates are normal in these mice, which differentiates this phenotype from rickets

integument
• mice have thin skin


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
12/17/2024
MGI 6.24
The Jackson Laboratory