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Phenotypes Associated with This Genotype
Genotype
MGI:3832333
Allelic
Composition
Tg(CAG-Bgeo,-Fgf4)1Mrt/?
Tg(Msx2-cre)5Rem/?
Genetic
Background
involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Tg(CAG-Bgeo,-Fgf4)1Mrt mutation (1 available)
Tg(Msx2-cre)5Rem mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• slower growth rate

limbs/digits/tail
• additional posterior digit composed of partial or complete metacarpal/metatarsal and 1-2 phalanges
• metacarpal/metatarsal usually fused with equivalent bones of digit V
• additional phalange-like elements between digit V and supernumerary digit in rare cases
• half of hind limbs with a thin digit-like structure ventral to digit I, contains metatarsal and 1-2 phalanges
• distal phalange of extra ventral digit sometimes attached to the distal phalange of digit I
• absence of interdigital programmed cell death
• proximal part of the calcaneus is significantly enlarged
• occasionally
• stylopod and zeugopod are normal
• slightly larger than controls at E11.5
• supernumerary digit on the posterior side of autopods
• earliest indications at E12.5

vision/eye
• hyperplasia of the eyelids

reproductive system
• malformation of the external genitalia

embryo
• slightly larger than controls at E11.5

skeleton
• proximal part of the calcaneus is significantly enlarged
• occasionally


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
01/06/2026
MGI 6.24
The Jackson Laboratory