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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Ewsr1+
wild type
MGI:2432806
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Ewsr1tm1b(EUCOMM)Wtsi/Ewsr1+ C57BL/6N-Ewsr1tm1b(EUCOMM)Wtsi/Tcp MGI:5757061
cn2
Ewsr1tm2(FLI1*)Sblee/Ewsr1+
Tg(CAG-cre/Esr1*)5Amc/0
involves: 129S6/SvEvTac * C57BL/6 * CBA MGI:4429149
cn3
Ewsr1tm1Sblee/Ewsr1+
Tg(CAG-cre/Esr1*)5Amc/0
involves: 129S6/SvEvTac * C57BL/6 * CBA MGI:4429150
cn4
Ewsr1tm1(ERG)Thr/Ewsr1+
Rag1tm1(cre)Thr/Rag1+
involves: 129S/SvEv MGI:3603039


Genotype
MGI:5757061
ht1
Allelic
Composition
Ewsr1tm1b(EUCOMM)Wtsi/Ewsr1+
Genetic
Background
C57BL/6N-Ewsr1tm1b(EUCOMM)Wtsi/Tcp
Cell Lines EPD0781_4_G03
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ewsr1tm1b(EUCOMM)Wtsi mutation (1 available); any Ewsr1 mutation (93 available)
Data Sources
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
IMPC - TCP

hematopoietic system

homeostasis/metabolism
IMPC - TCP

immune system

limbs/digits/tail
IMPC - TCP

skeleton
IMPC - TCP




Genotype
MGI:4429149
cn2
Allelic
Composition
Ewsr1tm2(FLI1*)Sblee/Ewsr1+
Tg(CAG-cre/Esr1*)5Amc/0
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ewsr1tm2(FLI1*)Sblee mutation (0 available); any Ewsr1 mutation (93 available)
Tg(CAG-cre/Esr1*)5Amc mutation (11 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• after tamoxifen injection, within 4 to 6 days mice become moribund and die

cellular
• 24 hours after tamoxifen application MEF cultures begin to die and caspase-3 activity increases
• after tamoxifen injection, increase in TUNEL+ cells in epithelia

renal/urinary system
• after tamoxifen injection, increase in TUNEL+ cells in epithelia




Genotype
MGI:4429150
cn3
Allelic
Composition
Ewsr1tm1Sblee/Ewsr1+
Tg(CAG-cre/Esr1*)5Amc/0
Genetic
Background
involves: 129S6/SvEvTac * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ewsr1tm1Sblee mutation (0 available); any Ewsr1 mutation (93 available)
Tg(CAG-cre/Esr1*)5Amc mutation (11 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype
• no effects on survival even after 6 months following tamoxifien injection
• no phenotype of MEFS with tamoxifen




Genotype
MGI:3603039
cn4
Allelic
Composition
Ewsr1tm1(ERG)Thr/Ewsr1+
Rag1tm1(cre)Thr/Rag1+
Genetic
Background
involves: 129S/SvEv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ewsr1tm1(ERG)Thr mutation (0 available); any Ewsr1 mutation (93 available)
Rag1tm1(cre)Thr mutation (0 available); any Rag1 mutation (133 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
neoplasm
• associated with leukemia
• mutant mice develop leukemia involving T cells with infiltrating lymphoblasts in the bone marrow, liver, and kidney

immune system
• associated with leukemia
• associated with leukemia

hematopoietic system
• associated with leukemia
• associated with leukemia

endocrine/exocrine glands
• associated with leukemia





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