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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Sfrp2tm1.1Brle
targeted mutation 1.1, Brendan Lee
MGI:5431901
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Sfrp2tm1.1Brle/Sfrp2tm1.1Brle B6;129-Sfrp2tm1.1Brle/J MGI:6509981
hm2
Sfrp2tm1.1Brle/Sfrp2tm1.1Brle involves: 129S7/SvEvBrd MGI:5431927
hm3
Sfrp2tm1.1Brle/Sfrp2tm1.1Brle involves: 129S7/SvEvBrd * C57BL/6 MGI:5431926
cx4
Sfrp2tm1.1Brle/Sfrp2tm1.1Brle
Sfrp4tm1.1Boer/Sfrp4tm1.1Boer
involves: 129S1/Sv * 129S7/SvEvBrd * 129X1/SvJ * BALB/cJ MGI:6509983


Genotype
MGI:6509981
hm1
Allelic
Composition
Sfrp2tm1.1Brle/Sfrp2tm1.1Brle
Genetic
Background
B6;129-Sfrp2tm1.1Brle/J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Sfrp2tm1.1Brle mutation (1 available); any Sfrp2 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
N
• mice exhibit normal fertility




Genotype
MGI:5431927
hm2
Allelic
Composition
Sfrp2tm1.1Brle/Sfrp2tm1.1Brle
Genetic
Background
involves: 129S7/SvEvBrd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Sfrp2tm1.1Brle mutation (1 available); any Sfrp2 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
limbs/digits/tail
• Background Sensitivity: at 6 months, all mice exhibit a hind limb, unilateral, soft- tissue syndactyly between the third and fourth digit compared with some mice on a mixed background




Genotype
MGI:5431926
hm3
Allelic
Composition
Sfrp2tm1.1Brle/Sfrp2tm1.1Brle
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Sfrp2tm1.1Brle mutation (1 available); any Sfrp2 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
skeleton
• calcified in distal limbs
• mild mesomelic shortening
• ossification centers in the second phalanges are delayed compared to in wild-type mice
• decreased proliferation and delayed differentiation in distal limb skeletal elements at E17.5
• however, chondrocyte apoptosis rates are normal

limbs/digits/tail
• at P1 and P4, mice exhibit syndactyly compared with wild-type mice
• Background Sensitivity: at 6 months, some mice exhibit a hind limb, unilateral, soft- tissue syndactyly between the third and fourth digit compared with all mice on a pure 129 background




Genotype
MGI:6509983
cx4
Allelic
Composition
Sfrp2tm1.1Brle/Sfrp2tm1.1Brle
Sfrp4tm1.1Boer/Sfrp4tm1.1Boer
Genetic
Background
involves: 129S1/Sv * 129S7/SvEvBrd * 129X1/SvJ * BALB/cJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Sfrp2tm1.1Brle mutation (1 available); any Sfrp2 mutation (30 available)
Sfrp4tm1.1Boer mutation (0 available); any Sfrp4 mutation (18 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• increased ovulation
• female mice exhibit increased litter size





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last database update
11/12/2024
MGI 6.24
The Jackson Laboratory