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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Phc1tm1Os
targeted mutation 1, Osaka University Medical School
MGI:1857629
Summary 7 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Phc1tm1Os/Phc1tm1Os involves: 129S2/SvPas * C57BL/6 MGI:3042302
hm2
Phc1tm1Os/Phc1tm1Os involves: 129/Sv * C57BL/6 MGI:3590553
cx3
Phc1tm1Os/Phc1tm1Os
Tg(Myh7-Phc1)#Yota/0
involves: 129S2/SvPas * C57BL/6 MGI:5906060
cx4
Phc1tm1Os/Phc1+
Phc2tm1Hko/Phc2tm1Hko
involves: 129/Sv * C57BL/6 MGI:3590551
cx5
Phc1tm1Os/Phc1+
Phc2tm1Hko/Phc2+
involves: 129/Sv * C57BL/6 MGI:3590552
cx6
Phc1tm1Os/Phc1tm1Os
Phc2tm1Hko/Phc2+
involves: 129/Sv * C57BL/6 MGI:3590550
cx7
Phc1tm1Os/Phc1tm1Os
Phc2tm1Hko/Phc2tm1Hko
involves: 129/Sv * C57BL/6 MGI:3590549


Genotype
MGI:3042302
hm1
Allelic
Composition
Phc1tm1Os/Phc1tm1Os
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Phc1tm1Os mutation (1 available); any Phc1 mutation (72 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Phc1tm1Os/Phc1tm1Os hearts show abnormal cardiac looping at E9.5

muscle

mortality/aging
• expected ratio of homozygotes through E17.5
• reduced proportion of homozygotes at birth (15 out of 146 newborns)
• 2 born dead and 7 cyanotic at birth
• remaining homozygotes became cyanotic and died within a few hours of birth

cardiovascular system
• hypoplasia of the pulmonary trunk
• truncus arteriosus and bulbus cordis are extremely deformed
• about 1/3 of hearts display characteristics of tetralogy of Fallot
• incomplete looping of the heart tube seen at E9.5
• bulbus cordis is extremely deformed
• aorta straddles a large ventricular septal defect
• stenosis of the right ventricular infundibulum
• both ventricles have a thin myocardium
• both ventricles are dilated

craniofacial
• reduced occipital bone
• bilateral cleft of hard palate seen in 10 of 14 homozygotes

endocrine/exocrine glands
• about half normal size

growth/size/body
• bilateral cleft of hard palate seen in 10 of 14 homozygotes
• homozygotes are smaller in size than normal littermates

hematopoietic system
• about half normal size
• B cells are reduced resulting in an overall reduction of lymphoid lineages in peripheral blood
• nucleated cells in the spleen are reduced to about 12.5% of normal
• at E12.5 the numbers of spleen precursor cells are significantly reduced
• hematopoietic cell expansion normal until around E14.5 after which it declines
• hematopoietic stem cells are unable to enhance survival by repopulating lethally irradiated recipients
• about half normal size

immune system
• about half normal size
• B cells are reduced resulting in an overall reduction of lymphoid lineages in peripheral blood
• about half normal size

skeleton
• reduced occipital bone
• sternal defects including loss of the fifth ossification point
• C1 and C2 are frequently fused
• C7 takes the form of T1
• L6 takes the form of S1

vision/eye
• variable abnormalities include the absence or hypoplasia of the optic cup, with the abnormalities often more severe in the right optic cup than the left optic cup
• when present, abnormal rotations of the optic cups are sometimes seen
• the optic cups of the 12.5 d.p.c. embryos are significantly smaller in the homozygotes

digestive/alimentary system
• bilateral cleft of hard palate seen in 10 of 14 homozygotes

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
tetralogy of Fallot DOID:6419 OMIM:187500
J:43764




Genotype
MGI:3590553
hm2
Allelic
Composition
Phc1tm1Os/Phc1tm1Os
Genetic
Background
involves: 129/Sv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Phc1tm1Os mutation (1 available); any Phc1 mutation (72 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mutants are alive at E17.5 but do not survive birth

craniofacial
• an ectopic arch is associated with the occipital bones
• the sphenoid is partially split
• the center of the presphenoid is not ossified

skeleton
• an ectopic arch is associated with the occipital bones
• the sphenoid is partially split
• the center of the presphenoid is not ossified
• changes in the vertebral column are similar to those in Phc2tm1Hko

digestive/alimentary system

growth/size/body




Genotype
MGI:5906060
cx3
Allelic
Composition
Phc1tm1Os/Phc1tm1Os
Tg(Myh7-Phc1)#Yota/0
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Phc1tm1Os mutation (1 available); any Phc1 mutation (72 available)
Tg(Myh7-Phc1)#Yota mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
• mice exhibit cardiac abnormalities similar to that of single Phc1 homozygous mutants
• tetralogy of Fallot
• membranous or muscular ventricular septal defects




Genotype
MGI:3590551
cx4
Allelic
Composition
Phc1tm1Os/Phc1+
Phc2tm1Hko/Phc2tm1Hko
Genetic
Background
involves: 129/Sv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Phc1tm1Os mutation (1 available); any Phc1 mutation (72 available)
Phc2tm1Hko mutation (1 available); any Phc2 mutation (83 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mutants are alive at E17.5 but do not survive birth

skeleton
• skeletal defects are more severe than in mice homozygous for Phc2 only
• the dorsal part of the occipital bone is floating
• there is a hole in the scapula
• the 6th ribs are detached from the sternum
• anterior processes are associated with the 5th cervical vertebra (C5)

craniofacial
• the dorsal part of the occipital bone is floating

digestive/alimentary system

growth/size/body




Genotype
MGI:3590552
cx5
Allelic
Composition
Phc1tm1Os/Phc1+
Phc2tm1Hko/Phc2+
Genetic
Background
involves: 129/Sv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Phc1tm1Os mutation (1 available); any Phc1 mutation (72 available)
Phc2tm1Hko mutation (1 available); any Phc2 mutation (83 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• posterior transformations are seen in all double heterozygotes




Genotype
MGI:3590550
cx6
Allelic
Composition
Phc1tm1Os/Phc1tm1Os
Phc2tm1Hko/Phc2+
Genetic
Background
involves: 129/Sv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Phc1tm1Os mutation (1 available); any Phc1 mutation (72 available)
Phc2tm1Hko mutation (1 available); any Phc2 mutation (83 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mutants are alive at E17.5 but do not survive birth

skeleton
• skeletal defects are more severe than in mice homozygous for Phc1 only
• segmentation of the exoccipital bone
• the presphenoid bone is absent
• there is a hole in the scapula
• the 6th ribs are detached from the sternum
• anterior processes are associated with the 5th cervical vertebra (C5)

hearing/vestibular/ear
• the caudal half of the tympanic bone is absent

craniofacial
• segmentation of the exoccipital bone
• the presphenoid bone is absent

digestive/alimentary system

growth/size/body




Genotype
MGI:3590549
cx7
Allelic
Composition
Phc1tm1Os/Phc1tm1Os
Phc2tm1Hko/Phc2tm1Hko
Genetic
Background
involves: 129/Sv * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Phc1tm1Os mutation (1 available); any Phc1 mutation (72 available)
Phc2tm1Hko mutation (1 available); any Phc2 mutation (83 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• double homozygotes are lost in a progressive manner starting around E9.5

embryo
• at E9.5 the first branchial arches are poorly developed
• at E9.5 the second branchial arches are poorly developed
• after E8.5 double homozygous embryos become progressively growth retarded
• at E9.5 only about 20 somites are present compared to 25 in littermates
• the tail bud is smaller

growth/size/body
• after E8.5 double homozygous embryos become progressively growth retarded

limbs/digits/tail
• the tail bud is smaller

craniofacial
• at E9.5 the first branchial arches are poorly developed
• at E9.5 the second branchial arches are poorly developed





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