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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Rag1+
wild type
MGI:2429493
Summary 8 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Rag1tm1Jsek/Rag1+ involves: 129S6/SvEvTac MGI:3840833
cn2
Ewsr1tm1(ERG)Thr/Ewsr1+
Rag1tm1(cre)Thr/Rag1+
involves: 129S/SvEv MGI:3603039
cn3
Lmo2tm3Thr/Lmo2tm4Thr
Rag1tm1(cre)Thr/Rag1+
involves: 129S/SvEv MGI:3584438
cn4
Ctps1tm1c(KOMP)Wtsi/Ctps1tm1c(KOMP)Wtsi
Tg(Cd4-cre)1Cwi/0
Foxp3sf/Y
Rag1tm1Mom/Rag1+
mixed MGI:7659107
cx5
Inpp5dtm1Rkh/Inpp5dtm1Rkh
Rag1tm1(GFP)Imku/Rag1+
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * CBA MGI:3838991
cx6
Lcktm1Mak/Lcktm1Mak
Rag1tm1Mom/Rag1+
Tg(Lck-Fyn*Y528F)5525Cjg/0
involves: 129S2/SvPas * 129S7/SvEvBrd * C57BL/6 MGI:4360345
cx7
Rag1tm1Mom/Rag1+
Tg(LPV-TAg1135)11Tvd/0
Tg(TcrLCMV)327Sdz/0
involves: 129S7/SvEvBrd * C57BL/6 * DBA/2 MGI:2665135
cx8
Rag1tm1Mom/Rag1+
Tg(LPV-TAg1135)11Tvd/0
involves: 129/Sv * C57BL/6 * DBA/2 MGI:2665123


Genotype
MGI:3840833
ht1
Allelic
Composition
Rag1tm1Jsek/Rag1+
Genetic
Background
involves: 129S6/SvEvTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rag1tm1Jsek mutation (0 available); any Rag1 mutation (133 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• B cell development becomes impaired in mice over 1 year of age
• in the bone marrow of year old mice, significantly fewer B220+CD43+ pro-B cells progress to the B220+CD43- pre-B and B220+IgM+ stages of development
• IgH-D to IgH-J rearrangements are impaired in sorted pro-B- and pre-B-cell populations of mice one year of age compared to controls
• T cell development becomes impaired in mice over 1 year of age
• there is a significant decrease in the percentage and number of double-positive thymocytes of year old mice compared to age-matched wild-type controls
• Dbeta to Jbeta rearrangements are impaired in thymocytes of mice over 1 year of age compared to controls
• there is a significant decrease in the percentage and number of double-positive thymocytes of year old mice compared to age-matched wild-type controls

hematopoietic system
• B cell development becomes impaired in mice over 1 year of age
• in the bone marrow of year old mice, significantly fewer B220+CD43+ pro-B cells progress to the B220+CD43- pre-B and B220+IgM+ stages of development
• IgH-D to IgH-J rearrangements are impaired in sorted pro-B- and pre-B-cell populations of mice one year of age compared to controls
• T cell development becomes impaired in mice over 1 year of age
• there is a significant decrease in the percentage and number of double-positive thymocytes of year old mice compared to age-matched wild-type controls
• Dbeta to Jbeta rearrangements are impaired in thymocytes of mice over 1 year of age compared to controls
• there is a significant decrease in the percentage and number of double-positive thymocytes of year old mice compared to age-matched wild-type controls




Genotype
MGI:3603039
cn2
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




Genotype
MGI:3584438
cn3
Allelic
Composition
Lmo2tm3Thr/Lmo2tm4Thr
Rag1tm1(cre)Thr/Rag1+
Genetic
Background
involves: 129S/SvEv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lmo2tm3Thr mutation (0 available); any Lmo2 mutation (30 available)
Lmo2tm4Thr mutation (0 available); any Lmo2 mutation (30 available)
Rag1tm1(cre)Thr mutation (0 available); any Rag1 mutation (133 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
N
• mutant mice are viable and exhibit no hematopoietic defects, with normal bone marrow, spleen and thymus cell counts

immune system
N
• normal T and B lymphoid development




Genotype
MGI:7659107
cn4
Allelic
Composition
Ctps1tm1c(KOMP)Wtsi/Ctps1tm1c(KOMP)Wtsi
Tg(Cd4-cre)1Cwi/0
Foxp3sf/Y
Rag1tm1Mom/Rag1+
Genetic
Background
mixed
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ctps1tm1c(KOMP)Wtsi mutation (0 available); any Ctps1 mutation (46 available)
Foxp3sf mutation (5 available); any Foxp3 mutation (57 available)
Rag1tm1Mom mutation (56 available); any Rag1 mutation (133 available)
Tg(Cd4-cre)1Cwi mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
• weight does not reach control levels at 40-50 days and 60-75 days
• by day 44, mice develop enlarged spleen

endocrine/exocrine glands
• by day 44, thymus has reduced cellularity

immune system
• both CD8+ and CD4+ T cells show a reduced capacity to expand in response to CD3/CD28 stimulation
• by day 44, thymus has reduced cellularity
• by day 44, mice develop enlarged spleen
• mice exhibit a deficiency in T regulatory cells (CD4+, CD25+, FoxP3+)
• mice show prevention of the fatal systemic autoimmune and inflammatory disease that is seen in Foxp3sf/Y mice, with mice surviving at least up to 80 days and no presentation of scaly tails and ears, and no inflammation and tissue disruption at day 44
• values of total T cells return to normal and the accumulation of effector memory CD4+ and CD8+ T cells in the spleen that is seen in single Foxp3/Y mice is reduced

hematopoietic system
• both CD8+ and CD4+ T cells show a reduced capacity to expand in response to CD3/CD28 stimulation
• by day 44, thymus has reduced cellularity
• by day 44, mice develop enlarged spleen
• mice exhibit a deficiency in T regulatory cells (CD4+, CD25+, FoxP3+)

cellular
• both CD8+ and CD4+ T cells show a reduced capacity to expand in response to CD3/CD28 stimulation




Genotype
MGI:3838991
cx5
Allelic
Composition
Inpp5dtm1Rkh/Inpp5dtm1Rkh
Rag1tm1(GFP)Imku/Rag1+
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * CBA
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Inpp5dtm1Rkh mutation (0 available); any Inpp5d mutation (95 available)
Rag1tm1(GFP)Imku mutation (0 available); any Rag1 mutation (133 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• there is a defect in development of early-lymphoid progenitors
• no GFP-positive cells are observed in the Lin-c-KithiSca-1+ cell population in the bone marrow compared 9% of the population being GFP-positive in Rag1tm1(GFP)Imku heterozygotes
• there is a 10-fold decrease in Lin-c-KitloSca-1loGFP+ population in the bone marrow, corresponding to the prolymphocyte fraction

immune system
• there is a defect in development of early-lymphoid progenitors
• no GFP-positive cells are observed in the Lin-c-KithiSca-1+ cell population in the bone marrow compared 9% of the population being GFP-positive in Rag1tm1(GFP)Imku heterozygotes
• there is a 10-fold decrease in Lin-c-KitloSca-1loGFP+ population in the bone marrow, corresponding to the prolymphocyte fraction




Genotype
MGI:4360345
cx6
Allelic
Composition
Lcktm1Mak/Lcktm1Mak
Rag1tm1Mom/Rag1+
Tg(Lck-Fyn*Y528F)5525Cjg/0
Genetic
Background
involves: 129S2/SvPas * 129S7/SvEvBrd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lcktm1Mak mutation (1 available); any Lck mutation (96 available)
Rag1tm1Mom mutation (56 available); any Rag1 mutation (133 available)
Tg(Lck-Fyn*Y528F)5525Cjg mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hematopoietic system
• the transgene partially rescues arrest of T cell development associated with Lck deficiency
• thymocyte numbers are normal
• splenic gamma-delta T cell numbers are normal
• expression of TCR and CD5 on transitional single-positive thymocytes is slightly lower than controls
• alpha beta T cell numbers are less than half of wild-type controls

immune system
• the transgene partially rescues arrest of T cell development associated with Lck deficiency
• thymocyte numbers are normal
• splenic gamma-delta T cell numbers are normal
• expression of TCR and CD5 on transitional single-positive thymocytes is slightly lower than controls
• alpha beta T cell numbers are less than half of wild-type controls




Genotype
MGI:2665135
cx7
Allelic
Composition
Rag1tm1Mom/Rag1+
Tg(LPV-TAg1135)11Tvd/0
Tg(TcrLCMV)327Sdz/0
Genetic
Background
involves: 129S7/SvEvBrd * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rag1tm1Mom mutation (56 available); any Rag1 mutation (133 available)
Tg(LPV-TAg1135)11Tvd mutation (0 available)
Tg(TcrLCMV)327Sdz mutation (11 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• survival time at which half of the mutants are sacrificed or die due to illness is 110 days

neoplasm
• 100% incidence of thymoma
• tumorigenesis is accelerated compared to mice hemizygous for Tg(LPV-TAg1135)11Tvd and heterozygous for Rag1

endocrine/exocrine glands
• 100% incidence of thymoma
• tumorigenesis is accelerated compared to mice hemizygous for Tg(LPV-TAg1135)11Tvd and heterozygous for Rag1

hematopoietic system
• 100% incidence of thymoma
• tumorigenesis is accelerated compared to mice hemizygous for Tg(LPV-TAg1135)11Tvd and heterozygous for Rag1

immune system
• 100% incidence of thymoma
• tumorigenesis is accelerated compared to mice hemizygous for Tg(LPV-TAg1135)11Tvd and heterozygous for Rag1




Genotype
MGI:2665123
cx8
Allelic
Composition
Rag1tm1Mom/Rag1+
Tg(LPV-TAg1135)11Tvd/0
Genetic
Background
involves: 129/Sv * C57BL/6 * DBA/2
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rag1tm1Mom mutation (56 available); any Rag1 mutation (133 available)
Tg(LPV-TAg1135)11Tvd mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• survival time at which half of the mutants are sacrificed or die due to illness is 165 days

neoplasm
• 100% incidence of thymoma

endocrine/exocrine glands
• 100% incidence of thymoma

immune system
• 100% incidence of thymoma

hematopoietic system
• 100% incidence of thymoma





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last database update
01/20/2026
MGI 6.24
The Jackson Laboratory