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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Jag1+
wild type
MGI:2384057
Summary 18 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Jag1Mhdahtu/Jag1+ C3HeB/FeJ-Jag1Mhdahtu MGI:3717461
ht2
Jag1Yo/Jag1+ C3HeB/FeJ-Jag1Yo MGI:5305602
ht3
Jag1Gt(betageo)1Byg/Jag1+ involves: 129P2/OlaHsd * C57BL/6 MGI:4360092
ht4
Jag1tm1Grid/Jag1+ involves: 129S1/Sv * C57BL/6 * FVB MGI:2384058
ht5
Jag1Slalom/Jag1+ involves: BALB/c * C3H MGI:3587506
ht6
Jag1Ozz/Jag1+ involves: BALB/cOla * C3H MGI:2664267
ht7
Jag1Ndr/Jag1+ involves: C3HeB/FeJ MGI:4420953
cn8
Jag1tm1.1Loo/Jag1+
Notch2tm1Grid/Notch2+
Tg(Alb1-cre)1Khk/0
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * SJL MGI:3848170
cn9
Jag1tm1Frad/Jag1+
Tg(Six2-EGFP/cre)1Amc/0
involves: 129/Sv * C57BL/6 * CD-1 MGI:5523696
cn10
Dll1tm1Mjo/Dll1+
Jag1tm1Frad/Jag1+
Tg(Six2-EGFP/cre)1Amc/0
involves: 129/Sv * C57BL/6 * CD-1 MGI:5523694
cn11
Dll1tm1Mjo/Dll1tm1Mjo
Jag1tm1Frad/Jag1+
Tg(Six2-EGFP/cre)1Amc/0
involves: 129/Sv * C57BL/6 * CD-1 MGI:5523691
cx12
Jag1tm1Grid/Jag1+
Notch2tm3.1Grid/Notch2+
B6.129S1-Jag1tm1Grid Notch2tm3.1Grid MGI:5004909
cx13
Jag1tm1Grid/Jag1+
Poglut1Gt(IST10323G11)Tigm/Poglut1+
B6.Cg-Jag1tm1Grid Poglut1Gt(IST10323G11)Tigm MGI:5004906
cx14
Jag1Mhdahtu/Jag1+
Six1Cwe/Six1+
C3HeB/FeJ-C3HeB/FeJ-Jag1Htu Six1Cwe MGI:3849174
cx15
Jag1tm1Grid/Cm involves: 101/H * 129S1/Sv * C3H/He * C57BL/6 * FVB/N MGI:3588033
cx16
Jag1tm1.1Vtlr/Jag1+
Notch1tm2Agt/Notch1+
involves: 129 MGI:3618372
cx17
Jag1tm1Grid/Jag1+
Notch2tm1Grid/Notch2+
involves: 129S1/Sv MGI:3778810
cx18
Jag1tm1Grid/Jag1+
Notch2tm1Grid/Notch2+
involves: 129S1/Sv * C57BL/6J MGI:2384061


Genotype
MGI:3717461
ht1
Allelic
Composition
Jag1Mhdahtu/Jag1+
Genetic
Background
C3HeB/FeJ-Jag1Mhdahtu
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1Mhdahtu mutation (2 available); any Jag1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Inner ear of Jag1Mhdahtu/Jag1+ mice at E16.5 shows missing or smaller ampullae

behavior/neurological
• mild head shaking behavior
• age of onset is approximately weaning age

hearing/vestibular/ear
N
• mutants are not deaf and have normal endocochlear potentials, but have slightly, although not significant, raised thresholds for compound action potentials
• display atypical hair cells that exhibit the bundle morphology of outer hair cells but reside in the inner hair cell row, resulting in an overall increases in the number of inner hair cells by 17%
• 33% reduction in the numbers of outer hair cells; instead of the normal 3 rows of outer hair cells there are only 2 rows and in some regions, only one row
• the number of inner hair cells is increased slightly, with occasional cells appearing in a second row toward the inner sulcus
• truncation of semicircular canals
• posterior and sometimes anterior ampullae are missing; most mice have both ampullae missing
• when present, the anterior ampulla is small
• in the few cases where the posterior ampulla is present, it is very small
• anterior crista at P3 is small, flat and missing eminentia cruciata (J:72108)
• mice lack anterior cristae and sometime posterior cristae unlike in wild-type mice (J:149467)

nervous system
• display atypical hair cells that exhibit the bundle morphology of outer hair cells but reside in the inner hair cell row, resulting in an overall increases in the number of inner hair cells by 17%
• 33% reduction in the numbers of outer hair cells; instead of the normal 3 rows of outer hair cells there are only 2 rows and in some regions, only one row
• the number of inner hair cells is increased slightly, with occasional cells appearing in a second row toward the inner sulcus

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
Alagille syndrome DOID:9245 OMIM:118450
OMIM:610205
J:72108




Genotype
MGI:5305602
ht2
Allelic
Composition
Jag1Yo/Jag1+
Genetic
Background
C3HeB/FeJ-Jag1Yo
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1Yo mutation (1 available); any Jag1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hearing/vestibular/ear
• reduced rows of outer hair cells
• truncation of the posterior and/or superior semicircular canals
• truncation of the posterior and/or superior semicircular canals

nervous system
• reduced rows of outer hair cells




Genotype
MGI:4360092
ht3
Allelic
Composition
Jag1Gt(betageo)1Byg/Jag1+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1Gt(betageo)1Byg mutation (0 available); any Jag1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype




Genotype
MGI:2384058
ht4
Allelic
Composition
Jag1tm1Grid/Jag1+
Genetic
Background
involves: 129S1/Sv * C57BL/6 * FVB
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1tm1Grid mutation (1 available); any Jag1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
vision/eye
• Background Sensitivity: eye phenotypes are described as fully penetrant on an 80% C57BL/6 genetic background and incompletely penetrant on a mixed background
• iris coloboma

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
NOT Alagille syndrome DOID:9245 OMIM:118450
OMIM:610205
J:54907




Genotype
MGI:3587506
ht5
Allelic
Composition
Jag1Slalom/Jag1+
Genetic
Background
involves: BALB/c * C3H
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1Slalom mutation (2 available); any Jag1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• subtle headweaving/shaking behavior
• described as poor negative geotaxis

hearing/vestibular/ear
• supernumary or atypical outer hair cells sometimes found in inner hair cell rows
• reduced numbers of outer hair cells
• some regions lacking entire rows while isolated hair cells missing in other regions
• decreased outer hair cell counts in both basal and apical turns
• significantly increased inner hair cell counts in base of cochlea but not apical regions
• either posterior or anterior semicircular canal truncated
• sometimes both anterior and posterior semicircular canals absent

nervous system
• reduced numbers of outer hair cells
• some regions lacking entire rows while isolated hair cells missing in other regions
• decreased outer hair cell counts in both basal and apical turns
• significantly increased inner hair cell counts in base of cochlea but not apical regions




Genotype
MGI:2664267
ht6
Allelic
Composition
Jag1Ozz/Jag1+
Genetic
Background
involves: BALB/cOla * C3H
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1Ozz mutation (2 available); any Jag1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• described as headweaving




Genotype
MGI:4420953
ht7
Allelic
Composition
Jag1Ndr/Jag1+
Genetic
Background
involves: C3HeB/FeJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1Ndr mutation (1 available); any Jag1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological




Genotype
MGI:3848170
cn8
Allelic
Composition
Jag1tm1.1Loo/Jag1+
Notch2tm1Grid/Notch2+
Tg(Alb1-cre)1Khk/0
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1tm1.1Loo mutation (0 available); any Jag1 mutation (78 available)
Notch2tm1Grid mutation (1 available); any Notch2 mutation (97 available)
Tg(Alb1-cre)1Khk mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
normal phenotype
• no abnormal phenotype was observed including in the bile ducts




Genotype
MGI:5523696
cn9
Allelic
Composition
Jag1tm1Frad/Jag1+
Tg(Six2-EGFP/cre)1Amc/0
Genetic
Background
involves: 129/Sv * C57BL/6 * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1tm1Frad mutation (0 available); any Jag1 mutation (78 available)
Tg(Six2-EGFP/cre)1Amc mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
N
• nephron development appears essentially normal




Genotype
MGI:5523694
cn10
Allelic
Composition
Dll1tm1Mjo/Dll1+
Jag1tm1Frad/Jag1+
Tg(Six2-EGFP/cre)1Amc/0
Genetic
Background
involves: 129/Sv * C57BL/6 * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Dll1tm1Mjo mutation (4 available); any Dll1 mutation (45 available)
Jag1tm1Frad mutation (0 available); any Jag1 mutation (78 available)
Tg(Six2-EGFP/cre)1Amc mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
N
• nephron development appears essentially normal




Genotype
MGI:5523691
cn11
Allelic
Composition
Dll1tm1Mjo/Dll1tm1Mjo
Jag1tm1Frad/Jag1+
Tg(Six2-EGFP/cre)1Amc/0
Genetic
Background
involves: 129/Sv * C57BL/6 * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Dll1tm1Mjo mutation (4 available); any Dll1 mutation (45 available)
Jag1tm1Frad mutation (0 available); any Jag1 mutation (78 available)
Tg(Six2-EGFP/cre)1Amc mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
• nephron number is severely compromised, but some podocytes form




Genotype
MGI:5004909
cx12
Allelic
Composition
Jag1tm1Grid/Jag1+
Notch2tm3.1Grid/Notch2+
Genetic
Background
B6.129S1-Jag1tm1Grid Notch2tm3.1Grid
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1tm1Grid mutation (1 available); any Jag1 mutation (78 available)
Notch2tm3.1Grid mutation (0 available); any Notch2 mutation (97 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
liver/biliary system
• severe decrease in the number of biliary cells in the periportal regions at P0
• bile duct paucity at P0

endocrine/exocrine glands
• bile duct paucity at P0




Genotype
MGI:5004906
cx13
Allelic
Composition
Jag1tm1Grid/Jag1+
Poglut1Gt(IST10323G11)Tigm/Poglut1+
Genetic
Background
B6.Cg-Jag1tm1Grid Poglut1Gt(IST10323G11)Tigm
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1tm1Grid mutation (1 available); any Jag1 mutation (78 available)
Poglut1Gt(IST10323G11)Tigm mutation (0 available); any Poglut1 mutation (59 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
liver/biliary system
• severe decrease in the number of biliary cells in the periportal regions at P0
• bile duct paucity at P0

endocrine/exocrine glands
• bile duct paucity at P0




Genotype
MGI:3849174
cx14
Allelic
Composition
Jag1Mhdahtu/Jag1+
Six1Cwe/Six1+
Genetic
Background
C3HeB/FeJ-C3HeB/FeJ-Jag1Htu Six1Cwe
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1Mhdahtu mutation (2 available); any Jag1 mutation (78 available)
Six1Cwe mutation (1 available); any Six1 mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
hearing/vestibular/ear
• anterior and posterior canals are truncated compared to in wild-type mice
• however, lateral canals are normal
• mice lack cristae unlike wild-type mice

behavior/neurological




Genotype
MGI:3588033
cx15
Allelic
Composition
Jag1tm1Grid/Cm
Genetic
Background
involves: 101/H * 129S1/Sv * C3H/He * C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cm mutation (1 available); any Cm mutation (1 available)
Jag1tm1Grid mutation (1 available); any Jag1 mutation (78 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system

nervous system




Genotype
MGI:3618372
cx16
Allelic
Composition
Jag1tm1.1Vtlr/Jag1+
Notch1tm2Agt/Notch1+
Genetic
Background
involves: 129
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1tm1.1Vtlr mutation (0 available); any Jag1 mutation (78 available)
Notch1tm2Agt mutation (0 available); any Notch1 mutation (116 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• most double heterozygotes die a few hours after birth; only 10% survive up to 8 days

nervous system
• at P4, there is a significant reduction in the number of mitotic cells in the rostral migratory stream of brains from mutants at P4
• at P4, there is a significant reduction in the number of dividing cells in the subventricular zone of brains from double heterozygotes
• at P8, the subventricular zone is noticeably thinner, with reduced cellularity and a 60% reduction in the number of proliferating cells compared to wild-type




Genotype
MGI:3778810
cx17
Allelic
Composition
Jag1tm1Grid/Jag1+
Notch2tm1Grid/Notch2+
Genetic
Background
involves: 129S1/Sv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1tm1Grid mutation (1 available); any Jag1 mutation (78 available)
Notch2tm1Grid mutation (1 available); any Notch2 mutation (97 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
liver/biliary system
• at P7, very little bile duct is present
• postnatal bile duct morphogenesis is defective although differentiation of bile duct precursors is normal

endocrine/exocrine glands
• at P7, very little bile duct is present
• postnatal bile duct morphogenesis is defective although differentiation of bile duct precursors is normal




Genotype
MGI:2384061
cx18
Allelic
Composition
Jag1tm1Grid/Jag1+
Notch2tm1Grid/Notch2+
Genetic
Background
involves: 129S1/Sv * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Jag1tm1Grid mutation (1 available); any Jag1 mutation (78 available)
Notch2tm1Grid mutation (1 available); any Notch2 mutation (97 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• approximately 50% of the double heterozygotes died within the first week after birth

renal/urinary system
• about a quarter of the glomeruli present lacked glomerular capillary tufts and exhibited capillary aneuryisms similar to those observed in Notch2tm1Grid/Notch2tm1Grid homozygous mutant kidneys
• about a quarter of the glomeruli present exhibited capillary aneuryisms
• kidneys of the double heterozygotes were about half the size of kidneys from the controls

liver/biliary system
• defects in intrahepatic bile duct differentiation
• few morphologically identifiable bile ducts were present
• expression of markers for bile duct epithelial cells was detected; small numbers of these cells were adjacent to the portal veins, but these cells were not arranged into patent epithelial ducts
• expression of markers for hepatoblast cells that are precursors for bile duct epithelial cells indicates that no differences in the number or distribution of these precursors is apparent
• abnormal proliferation of cells adjacent to the portal veins and bile pigment accumulation in the hepatic parenchyma
• chronic; indicated by elevated levels of alanine aminotransferase and alkaline phosphatase

homeostasis/metabolism
• elevated blood urea nitrogen levels
• elevated levels of alanine aminotransferase, indicative of liver and biliary dysfunction
• elevated levels of alkaline phosphatase, indicative of liver and biliary dysfunction

cardiovascular system
• narrowing of the pulmonary artery; incomplete penetrance; observed in 6 of 9 animals
• about a quarter of the glomeruli present lacked glomerular capillary tufts and exhibited capillary aneuryisms similar to those observed in Notch2tm1Grid/Notch2tm1Grid homozygous mutant kidneys
• about a quarter of the glomeruli present exhibited capillary aneuryisms
• dextropositioning (overriding) of the aorta
• incomplete penetrance; observed in 12 of 14 animals
• incomplete penetrance; observed in 6 of 14 animals
• right ventricular hypoplasia

growth/size/body

vision/eye
• eye defects similar to those in Jag1tm1Grid homozygous mice

endocrine/exocrine glands
• defects in intrahepatic bile duct differentiation
• few morphologically identifiable bile ducts were present
• expression of markers for bile duct epithelial cells was detected; small numbers of these cells were adjacent to the portal veins, but these cells were not arranged into patent epithelial ducts
• expression of markers for hepatoblast cells that are precursors for bile duct epithelial cells indicates that no differences in the number or distribution of these precursors is apparent

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
Alagille syndrome DOID:9245 OMIM:118450
OMIM:610205
J:74574





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last database update
03/18/2025
MGI 6.24
The Jackson Laboratory