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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Hand1tm1Eno
targeted mutation 1, Eric N Olson
MGI:2153824
Summary 9 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Hand1tm1Eno/Hand1tm1Eno involves: 129S7/SvEvBrd * C57BL/6 MGI:2176457
ht2
Hand1tm1Eno/Hand1+ involves: 129S7/SvEvBrd * C57BL/6 MGI:2176459
ht3
Hand1tm1Eno/Hand1tm2Eno either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6) MGI:3514052
cn4
Hand1tm1Eno/Hand1tm2Eno
Tg(Myh6-cre)2182Mds/0
either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6) MGI:3514054
cn5
Hand1tm1Eno/Hand1tm2Eno
Tg(Nkx2-5-cre)9Eno/0
either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6) MGI:3514074
cn6
Hand1tm1Eno/Hand1tm2Eno
Rr133tm1Eno/Rr133+
Tg(Nkx2-5-cre)9Eno/0
either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6) MGI:3514076
cn7
Hand1tm1Eno/Hand1tm2Eno
Rr133tm1Eno/Rr133tm1Eno
Tg(Nkx2-5-cre)9Eno/0
either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6) MGI:3514077
cx8
Hand1tm1Eno/Hand1+
Hand2os1em1Eno/Hand2os1+
involves: 129S7/SvEvBrd * C57BL/6 MGI:5906410
cx9
Hand1tm1Eno/Hand1+
Rr133tm1Eno/Rr133tm1Eno
Not Specified MGI:3514081


Genotype
MGI:2176457
hm1
Allelic
Composition
Hand1tm1Eno/Hand1tm1Eno
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hand1tm1Eno mutation (1 available); any Hand1 mutation (14 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging

cardiovascular system
• yolk sacs lack defined vascularization
• posterior region of the forming heart tube fails to fuse
• heart tube forms but looping is abnormal

embryo
• yolk sacs lack defined vascularization
• fail to undergo turning at the 8-somite stage
• by E8.5, begin to show delayed growth
• neural tubes are often crooked
• amnion appears thickened and fails to completely enclose the body of the embryo, resulting in abnormal fusion of the amniotic and exocoelomic cavities
• yolk sacs have a rough, folded appearance in the area of contact with the ectoplacental cone
• show separation between the endodermal and mesodermal layers and the outer endodermal layer is extensively folded

nervous system
• neural tubes are often crooked

growth/size/body
• by E8.5, begin to show delayed growth




Genotype
MGI:2176459
ht2
Allelic
Composition
Hand1tm1Eno/Hand1+
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hand1tm1Eno mutation (1 available); any Hand1 mutation (14 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype




Genotype
MGI:3514052
ht3
Allelic
Composition
Hand1tm1Eno/Hand1tm2Eno
Genetic
Background
either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hand1tm1Eno mutation (1 available); any Hand1 mutation (14 available)
Hand1tm2Eno mutation (0 available); any Hand1 mutation (14 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype




Genotype
MGI:3514054
cn4
Allelic
Composition
Hand1tm1Eno/Hand1tm2Eno
Tg(Myh6-cre)2182Mds/0
Genetic
Background
either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hand1tm1Eno mutation (1 available); any Hand1 mutation (14 available)
Hand1tm2Eno mutation (0 available); any Hand1 mutation (14 available)
Tg(Myh6-cre)2182Mds mutation (3 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• most mutants die within 3 days of birth with only 4% surviving to P10 and less than 2% reaching adulthood

cardiovascular system
• immature endocardial cushions are seen in mutant hearts at E13.5
• hyperplastic atrioventicular valves are seen in all mutants and these valves are thickened in neonates
• 90% of mutants have membranous ventricular septal defects and these defects can be detected as early as E10.5
• the muscular ventricular septum is thickened and disorganized
• at E11.5 and E13.5 the left ventricle is reduced in size, however the size is normal at birth

homeostasis/metabolism
• most mutants become cyanotic within 3 days of birth




Genotype
MGI:3514074
cn5
Allelic
Composition
Hand1tm1Eno/Hand1tm2Eno
Tg(Nkx2-5-cre)9Eno/0
Genetic
Background
either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hand1tm1Eno mutation (1 available); any Hand1 mutation (14 available)
Hand1tm2Eno mutation (0 available); any Hand1 mutation (14 available)
Tg(Nkx2-5-cre)9Eno mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• most mutants die within 2-4 days of birth

cardiovascular system
• heart defects similar to those seen in compound heterozygotes hemizygous for Tg(Myhca-cre)2182Mds are found




Genotype
MGI:3514076
cn6
Allelic
Composition
Hand1tm1Eno/Hand1tm2Eno
Rr133tm1Eno/Rr133+
Tg(Nkx2-5-cre)9Eno/0
Genetic
Background
either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hand1tm1Eno mutation (1 available); any Hand1 mutation (14 available)
Hand1tm2Eno mutation (0 available); any Hand1 mutation (14 available)
Rr133tm1Eno mutation (0 available); any Rr133 mutation (0 available)
Tg(Nkx2-5-cre)9Eno mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• no mutant embryos are found after E10.5

cardiovascular system
• at E10.5 the myocardium is poorly trabeculated
• at E10.5 the myocardium is thin

embryo
• at E10.5 mutant embryos appear slightly delayed compared to compound heterozygotes lacking only Hand1

muscle
• at E10.5 the myocardium is poorly trabeculated
• at E10.5 the myocardium is thin

growth/size/body
• at E10.5 mutant embryos appear slightly delayed compared to compound heterozygotes lacking only Hand1




Genotype
MGI:3514077
cn7
Allelic
Composition
Hand1tm1Eno/Hand1tm2Eno
Rr133tm1Eno/Rr133tm1Eno
Tg(Nkx2-5-cre)9Eno/0
Genetic
Background
either: (involves: 129S6/SvEvTac * Black Swiss) or (involves: 129S6/SvEvTac * C57BL/6)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hand1tm1Eno mutation (1 available); any Hand1 mutation (14 available)
Hand1tm2Eno mutation (0 available); any Hand1 mutation (14 available)
Rr133tm1Eno mutation (0 available); any Rr133 mutation (0 available)
Tg(Nkx2-5-cre)9Eno mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging

cardiovascular system
• at E9.0 some segments of the myocardial wall contain cells that resemble mesenchymal cells rather than cardiomyocytes
• at E9.0 only a single atrium is present
• at E9.0 only a single immature ventricle is present and the lumen of the ventricle is abnormally narrow

muscle
• at E9.0 some segments of the myocardial wall contain cells that resemble mesenchymal cells rather than cardiomyocytes




Genotype
MGI:5906410
cx8
Allelic
Composition
Hand1tm1Eno/Hand1+
Hand2os1em1Eno/Hand2os1+
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hand1tm1Eno mutation (1 available); any Hand1 mutation (14 available)
Hand2os1em1Eno mutation (0 available); any Hand2os1 mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging

cardiovascular system
• left-sided

growth/size/body

embryo

homeostasis/metabolism




Genotype
MGI:3514081
cx9
Allelic
Composition
Hand1tm1Eno/Hand1+
Rr133tm1Eno/Rr133tm1Eno
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hand1tm1Eno mutation (1 available); any Hand1 mutation (14 available)
Rr133tm1Eno mutation (0 available); any Rr133 mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• no mutant embryos are found after E9.5

cardiovascular system
• the myocardium is poorly developed at E9.0
• at E9.0 only a single ventricle is present and the size of the ventricular lumen is decreased compared to Hand2 homozygotes as a result of an increase in the amount of cardiac jelly

muscle
• the myocardium is poorly developed at E9.0





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last database update
04/23/2024
MGI 6.23
The Jackson Laboratory