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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Erftm1Gmav
targeted mutation 1, George Mavrothalassitis
MGI:3719472
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Erftm1Gmav/Erftm1Gmav involves: 129S4/SvJae * C57BL/6 * CBA MGI:3720383
ht2
Erftm1Gmav/Erftm2Gmav involves: 129/Sv * C57BL/6 * CBA MGI:5499193


Genotype
MGI:3720383
hm1
Allelic
Composition
Erftm1Gmav/Erftm1Gmav
Genetic
Background
involves: 129S4/SvJae * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Erftm1Gmav mutation (0 available); any Erf mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging

embryo
• at E9.5, only primary vasculature is present in the yolk sac
• mice fail to form secondary vessels and a well-organized network
• at E9.5, 17 of 21 mice are smaller in size relative to controls
• at E9.5, 17 of 21 mice are reduced in weight relative to controls
• at E9.5, 7% of mice have an open neural tube
• at E10, hemorrhage-forming pools of blood appear in the ectoplancental cone cavity and allantoic compartment
• at E9.5, the chorion remains a compact structure
• chorion cell differentiation is blocked
• trophoblast stem cells exhibit a delay in differentiation
• at E9.5, the giant cell layer remains severely disorganized
• at E9.5 and E10.5, the giant cell layer is expanded
• at E8.5, the ectoplacental cone persists and is wider at later stages
• at E10, hemorrhage-forming pools of blood appear in the ectoplancental cone cavity and allantoic compartment
• at E9.5, the spongiotrophoblast layer remains severely disorganized
• at E8.0, E8.5 and E10.5, the spongiotrophoblast layer is smaller
• the umbilical cord fails to form
• at E9.5
• at E8.5, chorion and allantois approach but fail to fuse
• at E9.5, the chorioallantoic interface does not form

nervous system
• at E9.5, 7% of mice have an open neural tube
• at E9.5, mice exhibit hindbrain hypoplasia
• at E9.5, mice exhibit midbrain hypoplasia

hematopoietic system
• at E10.5, nondegenerated embryos are dead and anemic

homeostasis/metabolism
• at E9.5, 10% of mice exhibit highly congestive edema bilateral to the head

cellular
• at E9.5, mice exhibit an increase in apoptosis

growth/size/body
• at E9.5, 17 of 21 mice are smaller in size relative to controls
• at E9.5, 17 of 21 mice are reduced in weight relative to controls

cardiovascular system
• at E9.5, only primary vasculature is present in the yolk sac
• mice fail to form secondary vessels and a well-organized network




Genotype
MGI:5499193
ht2
Allelic
Composition
Erftm1Gmav/Erftm2Gmav
Genetic
Background
involves: 129/Sv * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Erftm1Gmav mutation (0 available); any Erf mutation (31 available)
Erftm2Gmav mutation (0 available); any Erf mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• at 3 to 6 weeks
• variably fused at P14
• mildly delayed at E16.5

craniofacial
• at 3 to 6 weeks





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last database update
04/16/2024
MGI 6.23
The Jackson Laboratory