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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Flt1+
wild type
MGI:1857716
Summary 6 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Flt1tm2Msh/Flt1+ involves: 129S/SvEv * C57BL/6J MGI:3527539
ht2
Flt1tm1Jrt/Flt1+ involves: CD-1 MGI:4844286
ht3
Flt1tm1Jrt/Flt1+ Not Specified MGI:4844291
cx4
Akt1tm1Mbb/Akt1+
Flt1tm1Jrt/Flt1+
involves: 129P2/OlaHsd MGI:4844292
cx5
Dmdmdx-5Cv/Dmdmdx-5Cv
Flt1tm1Jrt/Flt1+
Utrntm1Jrs/Utrntm1Jrs
involves: 129S1/Sv * 129X1/SvJ * C3HA * C57BL/6Ros MGI:4844311
cx6
Dmdmdx-5Cv/Dmdmdx-5Cv
Flt1tm1Jrt/Flt1+
involves: C3HA * C57BL/6Ros MGI:4844310


Genotype
MGI:3527539
ht1
Allelic
Composition
Flt1tm2Msh/Flt1+
Genetic
Background
involves: 129S/SvEv * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Flt1tm2Msh mutation (1 available); any Flt1 mutation (76 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
embryo
• about 50% of embryos show developmental defects similar to those in homozygous mice




Genotype
MGI:4844286
ht2
Allelic
Composition
Flt1tm1Jrt/Flt1+
Genetic
Background
involves: CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Flt1tm1Jrt mutation (1 available); any Flt1 mutation (76 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• mice exhibit decreased ischemic preconditioning-mediated cardioprotection compared with wild-type mice

homeostasis/metabolism
• mice exhibit decreased ischemic preconditioning-mediated cardioprotection compared with wild-type mice




Genotype
MGI:4844291
ht3
Allelic
Composition
Flt1tm1Jrt/Flt1+
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Flt1tm1Jrt mutation (1 available); any Flt1 mutation (76 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• mice exhibit increased vascular density in the tibialis anterior compared with wild-type mice
• following hind limb ischemia, mice exhibit blood flow and reduced capillary density compared with similarly treated wild-type mice
• mice exhibit increased vascular density in the tibialis anterior compared with wild-type mice
• mice exhibit increased blood perfusion compared with wild-type mice




Genotype
MGI:4844292
cx4
Allelic
Composition
Akt1tm1Mbb/Akt1+
Flt1tm1Jrt/Flt1+
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Akt1tm1Mbb mutation (1 available); any Akt1 mutation (37 available)
Flt1tm1Jrt mutation (1 available); any Flt1 mutation (76 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
N
• following hind limb ischemia, mice exhibit normal blood flow and capillary density




Genotype
MGI:4844311
cx5
Allelic
Composition
Dmdmdx-5Cv/Dmdmdx-5Cv
Flt1tm1Jrt/Flt1+
Utrntm1Jrs/Utrntm1Jrs
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C3HA * C57BL/6Ros
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Dmdmdx-5Cv mutation (1 available); any Dmd mutation (167 available)
Flt1tm1Jrt mutation (1 available); any Flt1 mutation (76 available)
Utrntm1Jrs mutation (2 available); any Utrn mutation (306 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• compared with Dmdmdx-5Cv Utrntm1Jrs homozygotes

muscle
• mice exhibit fewer muscle fibers with centrally localized nuclei compared with Dmdmdx-5Cv Utrntm1Jrs homozygotes

growth/size/body
• compared with Dmdmdx-5Cv Utrntm1Jrs homozygotes




Genotype
MGI:4844310
cx6
Allelic
Composition
Dmdmdx-5Cv/Dmdmdx-5Cv
Flt1tm1Jrt/Flt1+
Genetic
Background
involves: C3HA * C57BL/6Ros
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Dmdmdx-5Cv mutation (1 available); any Dmd mutation (167 available)
Flt1tm1Jrt mutation (1 available); any Flt1 mutation (76 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
N
• mice exhibit more stable and less degenerative muscle fibers with fewer calcium deposits and reduced fibrosis in the diaphragm compared with Dmdmdx-5Cv homozygotes
• mice exhibit an increase in total satellite cells and myogenic precursor cells compared with Dmdmdx-5Cv homozygotes
• mice exhibit an increase in the number of slow muscle fibers compared with Dmdmdx-5Cv homozygotes
• mice exhibit less variability in skeletal muscle fiber size compared with Dmdmdx-5Cv homozygotes
• mice exhibit an increase in total satellite cells and myogenic precursor cells compared with Dmdmdx-5Cv homozygotes and wild-type mice
• mice exhibit improved muscle contractile function compared with Dmdmdx-5Cv homozygotes

cardiovascular system
• capillary density in the tibialis anterior muscle and diaphragm is increased compared to in Dmdmdx-5Cv homozygotes
• mice exhibit increased blood perfusion compared with Dmdmdx-5Cv homozygotes





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last database update
01/06/2026
MGI 6.24
The Jackson Laboratory