About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc
targeted mutation 4, Mario R Capecchi
MGI:5495288
Summary 11 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+ involves: C57BL/6 MGI:5495300
cn2
Gt(ROSA)26Sortm1(cre/ERT)Nat/Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:5495301
cn3
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Bmi1tm1(cre/ERT)Mrc/Bmi1+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:5495321
cn4
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Pax7tm1(cre)Mrc/Pax7+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:5495314
cn5
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Myf5tm1(cre)Mrc/Myf5+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 MGI:5495318
cn6
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Pax7tm1(cre/ERT2)Gaka/Pax7+
involves: 129S6/SvEvTac * C57BL/6 MGI:5495319
cn7
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Pax3tm1(cre)Joe/Pax3+
involves: C57BL/6 MGI:5495303
cn8
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Tg(Prrx1-cre/ERT2)1Mlgn/?
involves: C57BL/6 MGI:5495320
cn9
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
H2az2Tg(Wnt1-cre)11Rth/H2az2+
involves: C57BL/6J * CBA/J MGI:5495316
cn10
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Tg(Prrx1-cre)1Cjt/?
involves: C57BL/6 * SJL MGI:5495317
cn11
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Tg(Tek-cre)1Ywa/?
involves: C57BL/6 * SJL MGI:5495315


Genotype
MGI:5495300
cn1
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Genetic
Background
involves: C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• injection of TAT-cre results in tumors at the injection site as well as EGFP expression
• match human clear cell sarcoma tumor histomorphology and immunochemistry
• open chromatin and clear cytoplasm
• rapid tumor growth after visible detection regardless of latency
• latency of tumor formation correlated with TAT-cre concentration

homeostasis/metabolism
• injection of TAT-cre results in tumors at the injection site as well as EGFP expression




Genotype
MGI:5495301
cn2
Allelic
Composition
Gt(ROSA)26Sortm1(cre/ERT)Nat/Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(cre/ERT)Nat mutation (2 available); any Gt(ROSA)26Sor mutation (993 available)
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system

growth/size/body
• administration of tamoxifen prior to 3 weeks of age results in stunted growth

mortality/aging
• administration of tamoxifen prior to 3 weeks of age results in death by 12 weeks of age without tumor formation

neoplasm
• when tamoxifen is administered after 3 weeks of age more tumors form than without tamoxifen
• tumors most often in extremities, rib cage, and facial tissue
• tumors rare in dermis, liver, and bone
• mice develop clear cell sarcoma mimicking tumors across a broad anatomic distribution at 3-6 months of age in the absence of tamoxifen, indicating leakiness of the cre transgene
• all mice have tumors by 12 weeks regardless of treatment




Genotype
MGI:5495321
cn3
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Bmi1tm1(cre/ERT)Mrc/Bmi1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Bmi1tm1(cre/ERT)Mrc mutation (2 available); any Bmi1 mutation (31 available)
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• fully penetrant tumorigenesis when tamoxifen is injected after 3 weeks of age
• tumors in deep mesenchymal tissues of the limbs and trunk
• most tumors form adjacent to bone but some are totally in muscle
• all tumors with "clear cell" morphology




Genotype
MGI:5495314
cn4
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Pax7tm1(cre)Mrc/Pax7+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
Pax7tm1(cre)Mrc mutation (2 available); any Pax7 mutation (38 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging

craniofacial
• severe craniofacial deformation




Genotype
MGI:5495318
cn5
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Myf5tm1(cre)Mrc/Myf5+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
Myf5tm1(cre)Mrc mutation (1 available); any Myf5 mutation (17 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• live to 3 months

growth/size/body
• mice are very small

muscle
• severely myopathic




Genotype
MGI:5495319
cn6
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Pax7tm1(cre/ERT2)Gaka/Pax7+
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
Pax7tm1(cre/ERT2)Gaka mutation (1 available); any Pax7 mutation (38 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• when tamoxifen is administered after 3 weeks of age myopathy develops by 12 months

neoplasm
N
• no abnormal tumor development when treated with tamoxifen after 3 weeks of age




Genotype
MGI:5495303
cn7
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Pax3tm1(cre)Joe/Pax3+
Genetic
Background
involves: C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
Pax3tm1(cre)Joe mutation (1 available); any Pax3 mutation (50 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging




Genotype
MGI:5495320
cn8
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Tg(Prrx1-cre/ERT2)1Mlgn/?
Genetic
Background
involves: C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
Tg(Prrx1-cre/ERT2)1Mlgn mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
muscle
• when tamoxifen is administered after 3 weeks of age myopathy develops by 12 months

neoplasm
• when tamoxifen is administered after 3 weeks of age tumors develop in the extremities of 100% of mice by 8 weeks of age
• tumors arise from the periosteal/perichondrial layer as well as within musculature
• clear cell morphology or spindle cell morphology




Genotype
MGI:5495316
cn9
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
H2az2Tg(Wnt1-cre)11Rth/H2az2+
Genetic
Background
involves: C57BL/6J * CBA/J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
H2az2Tg(Wnt1-cre)11Rth mutation (2 available); any H2az2 mutation (26 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging




Genotype
MGI:5495317
cn10
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Tg(Prrx1-cre)1Cjt/?
Genetic
Background
involves: C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
Tg(Prrx1-cre)1Cjt mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• embryos are viable at E14.5 but with severe limb deformities

limbs/digits/tail
• severe limb deformities at E14.5




Genotype
MGI:5495315
cn11
Allelic
Composition
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc/Gt(ROSA)26Sor+
Tg(Tek-cre)1Ywa/?
Genetic
Background
involves: C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm4(EWSR1/ATF1)Mrc mutation (0 available); any Gt(ROSA)26Sor mutation (993 available)
Tg(Tek-cre)1Ywa mutation (6 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging





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)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support.
last database update
09/03/2024
MGI 6.24
The Jackson Laboratory