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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Arnttm1Oha
targeted mutation 1, Oliver Hankinson
MGI:1932111
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Arnttm1Oha/Arnttm1Oha involves: 129X1/SvJ * C57BL/6J MGI:2168881
ht2
Arnttm1Oha/Arnt+ involves: 129X1/SvJ * C57BL/6J MGI:2168880


Genotype
MGI:2168881
hm1
Allelic
Composition
Arnttm1Oha/Arnttm1Oha
Genetic
Background
involves: 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Arnttm1Oha mutation (0 available); any Arnt mutation (65 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging

embryo
• 40% showed placental hemorrhaging at E9.5
• 20% showed delayed rotation at E9.5
• growth retardation: decreased crown rump and head length by E9.5, decreased somite number by E10.5
• 20% showed delayed rotation at E9.5
• severity of neural tube defects ranged from open anterior or posterior neuropore, small open region in the mid- or hindbrain, to complete failure of the head folds to close
• small chorioallantoic plates with fewer labyrinthine cavities
• formation of an extensive endothelial cell-lined vascular network was not observed

growth/size/body
• decreased head length
• growth retardation: decreased crown rump and head length by E9.5, decreased somite number by E10.5
• 20% showed delayed rotation at E9.5

nervous system
• severity of neural tube defects ranged from open anterior or posterior neuropore, small open region in the mid- or hindbrain, to complete failure of the head folds to close
• associated with visceral arch anomalies

craniofacial
• decreased head length

cardiovascular system
• formation of an extensive endothelial cell-lined vascular network was not observed
• 40% showed placental hemorrhaging at E9.5




Genotype
MGI:2168880
ht2
Allelic
Composition
Arnttm1Oha/Arnt+
Genetic
Background
involves: 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Arnttm1Oha mutation (0 available); any Arnt mutation (65 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype





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last database update
12/10/2024
MGI 6.24
The Jackson Laboratory