About   Help   FAQ
Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Tg(I12b-cre)1Jlr
transgene insertion 1, John LR Rubenstein
MGI:3833422
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Scn1atm2.1Wac/Scn1a+
Tg(I12b-cre)1Jlr/0
involves: 129X1/SvJ * C57BL/6J MGI:6274702
cn2
Scn1atm2.1Wac/Scn1a+
Tg(I12b-cre)1Jlr/0
involves: C57BL/6J * CD-1 MGI:5447490


Genotype
MGI:6274702
cn1
Allelic
Composition
Scn1atm2.1Wac/Scn1a+
Tg(I12b-cre)1Jlr/0
Genetic
Background
involves: 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Scn1atm2.1Wac mutation (1 available); any Scn1a mutation (114 available)
Tg(I12b-cre)1Jlr mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
behavior/neurological
• in contextual fear-conditioning test, mice show less freezing behavior in the 30 min and 24 hours after training
• mice treated with clonazepam show rescue of impaired context-dependent fear conditioning
• in the elevated-plus maze, mice enter the open arms less frequently and spend less time in the open arms
• mice spend less time in the center of the open field
• mice travel more in the open field
• mice exhibit increased circling behavior
• in the open field social interaction test, mice spend less time interacting with the caged stranger mouse
• in the three-chamber social preference test, mice show no preference for the stranger mouse over an inanimate object
• mice treated with clonazepam, a positive allosteric modulator of the GABA-A receptor, show rescue of impaired social behaviors in the open arena and three-chamber test and this effect is reversed after 1 week clearing period

nervous system
• frequency of spontaneous EPSCs in hippocampal CA1 and prefrontal cortex slices is increased
• treatment with clonazepam leads to a decrease in frequency of spontaneous EPSCs, without change in amplitude
• frequency of spontaneous IPSCs in hippocampal CA1 and prefrontal cortex slices is reduced
• treatment with clonazepam increases spontaneous IPSC amplitude in the hippocampal CA1 region, but not frequency

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
autism spectrum disorder DOID:0060041 J:188126
Dravet syndrome DOID:0080422 OMIM:607208
J:188126




Genotype
MGI:5447490
cn2
Allelic
Composition
Scn1atm2.1Wac/Scn1a+
Tg(I12b-cre)1Jlr/0
Genetic
Background
involves: C57BL/6J * CD-1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Scn1atm2.1Wac mutation (1 available); any Scn1a mutation (114 available)
Tg(I12b-cre)1Jlr mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• only 30% of mice survive to 90 days of age
• mice die 4-48 h after initial seizure onset
• mice begin to die in the third postnatal week

behavior/neurological
• spontaneous seizures are seen in about 1/3 of mice
• mice die 4-48 h after initial seizure onset
• elevation of body temperature induces seizure (mean temperature for seizure induction: 39.6 oC)
• seizures begin with forelimb clonus and progress in both frequency and severity through forelimb clonus with rearing
• seizures eventually culminate in generalized tonic-clonic seizure

nervous system
• spontaneous seizures are seen in about 1/3 of mice
• mice die 4-48 h after initial seizure onset
• elevation of body temperature induces seizure (mean temperature for seizure induction: 39.6 oC)
• seizures begin with forelimb clonus and progress in both frequency and severity through forelimb clonus with rearing
• seizures eventually culminate in generalized tonic-clonic seizure

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
Dravet syndrome DOID:0080422 OMIM:607208
J:189897





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
04/16/2024
MGI 6.23
The Jackson Laboratory