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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Erfetm1Lex
targeted mutation 1, Lexicon Pharmaceuticals
MGI:5007127
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Erfetm1Lex/Erfetm1Lex B6;129S5-Erfetm1Lex/Mmucd MGI:5582245
ht2
Erfetm1Lex/Erfe+ B6;129S5-Erfetm1Lex/Mmucd MGI:5582252
cx3
Erfetm1Lex/Erfetm1Lex
Hbb-b1tm1Unc/Hbb-b1+
Hbb-b2tm1Unc/Hbb-b2+
involves: 129P2/OlaHsd * 129S5/SvEvBrd * C57BL/6 MGI:5582255


Genotype
MGI:5582245
hm1
Allelic
Composition
Erfetm1Lex/Erfetm1Lex
Genetic
Background
B6;129S5-Erfetm1Lex/Mmucd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Erfetm1Lex mutation (2 available); any Erfe mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• following phlebotomy, 12 week old mice show lower hematocrit levels compared to wild-type mice
• mildly lower hemoglobin concentration at 6 weeks of age
• following phlebotomy, 12 week old mice show lower hemoglobin concentrations
• however, hematological parameters are normal at 3, 12, and 24 weeks of age and liver iron or hepcidin concentrations and spleen iron content are normal
• following phlebotomy, 12 week old mice show lower mean corpuscular hemoglobin levels
• mildly lower mean corpuscular hemoglobin concentration at 6 weeks of age
• mice exhibit an insignificant trend toward lower mean corpuscular volume at 6, 12, and 24 week of age, however following phlebotomy, 12 week old mice show a significant decrease in mean corpuscular volume

homeostasis/metabolism
• mice exhibit an insignificant trend toward lower serum iron levels at 6, 12, and 24 weeks of age, however after phlebotomy, mice show serum iron concentrations significantly lower than at baseline at all time points examined
• recovery of 12 week old mice from hemorrhage-induced anemia (phlebotomy) is delayed by several days

liver/biliary system
• 6 week old mice fail to suppress hepatic expression of hepcidin mRNA in response to phlebotomy as seen in wild-type mice
• however, erythroblast differentiation is normal after phlebotomy




Genotype
MGI:5582252
ht2
Allelic
Composition
Erfetm1Lex/Erfe+
Genetic
Background
B6;129S5-Erfetm1Lex/Mmucd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Erfetm1Lex mutation (2 available); any Erfe mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• slight decrease in hemoglobin levels

liver/biliary system
• 6 week old mice show a blunted hepatic suppression of hepcidin to phlebotomy compared to wild-type mice




Genotype
MGI:5582255
cx3
Allelic
Composition
Erfetm1Lex/Erfetm1Lex
Hbb-b1tm1Unc/Hbb-b1+
Hbb-b2tm1Unc/Hbb-b2+
Genetic
Background
involves: 129P2/OlaHsd * 129S5/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Erfetm1Lex mutation (2 available); any Erfe mutation (12 available)
Hbb-b1tm1Unc mutation (2 available); any Hbb-b1 mutation (7 available)
Hbb-b2tm1Unc mutation (2 available); any Hbb-b2 mutation (5 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• mean corpuscular hemoglobin levels are decreased compared to double heterozygous Hbb-b1tm1Unc and Hbb-b2tm1Unc mutants
• erythrocyte mean corpuscular volume is decreased compared to double heterozygous Hbb-b1tm1Unc and Hbb-b2tm1Unc mutants

homeostasis/metabolism
• serum iron concentrations are decreased compared to double heterozygous Hbb-b1tm1Unc and Hbb-b2tm1Unc mutants
• increase in hepcidin levels
• mice show less hepatic iron overload than double heterozygous Hbb-b1tm1Unc and Hbb-b2tm1Unc mutants

liver/biliary system
• mice show less hepatic iron overload than double heterozygous Hbb-b1tm1Unc and Hbb-b2tm1Unc mutants





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last database update
04/09/2024
MGI 6.23
The Jackson Laboratory