EJM
MCID: JVN005

Juvenile Myoclonic Epilepsy malady

Summaries for Juvenile Myoclonic Epilepsy

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6Disease Ontology, 30NIH Rare Diseases, 17Genetics Home Reference, 44Wikipedia, 33OMIM, 22MalaCards
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Genetics Home Reference: Juvenile myoclonic epilepsy is a condition characterized by recurrent seizures (epilepsy). This condition begins in childhood or adolescence, usually between ages 8 and 20, and lasts into adulthood. The most common type of seizure in people with this condition is myoclonic seizures, which cause rapid, uncontrolled muscle jerks. People with this condition may also have generalized tonic-clonic seizures (also known as grand mal seizures), which cause muscle rigidity, convulsions, and loss of consciousness. Sometimes, affected individuals have absence seizures, which cause loss of consciousness for a short period that appears as a staring spell. Typically, people with juvenile myoclonic epilepsy develop the characteristic myoclonic seizures in adolescence, then develop generalized tonic-clonic seizures a few years later. Although seizures can happen at any time, they occur most commonly in the morning, shortly after awakening. Seizures can be triggered by a lack of sleep, extreme tiredness, or alcohol consumption.17

MalaCards: Juvenile Myoclonic Epilepsy, also known as janz syndrome, is related to generalized epilepsy with febrile seizures plus and childhood absence epilepsy. An important gene associated with Juvenile Myoclonic Epilepsy is EFHC1 (EF-hand domain (C-terminal) containing 1), and among its related pathways are Potassium transporters- inward current and GABA signaling in brain. The drugs trimethadione and divalproex and the compounds pha 543613 hydrochloride and pnu 120596 have been mentioned in the context of this disorder. Affiliated tissues include brain, and related mouse phenotypes are homeostasis/metabolism and nervous system.

Disease Ontology: A adolescence-adult electroclinical syndrome that is characterized by brief, involuntary twitching of a muscle or a group of muscles (myoclonus) early in the morning with onset between 12 and 18 years.6

NIH Rare Diseases: Juvenile myoclonic epilepsy is an epilepsy syndrome characterized by myoclonic jerks (quick jerks of the arms or legs), generalized tonic-clonic seizures (GTCSs), and sometimes, absence seizures. The seizures of juvenile myoclonic epilepsy often occur when people first awaken in the morning, especially if they are sleep-deprived. Drinking alcohol and psychological stress may also make these seizures more likely. Onset typically occurs around adolesence in otherwise healthy children. The exact cause of juvenile myoclonic epilepsy remains unknown. Although patients usually require lifelong treatment with anticonvulsants, their overall prognosis is generally good.30

Wikipedia: Juvenile myoclonic epilepsy (JME), also known as Janz syndrome, is a fairly common form of idiopathic...44 more...

OMIM: 254770

Aliases & Descriptions for Juvenile Myoclonic Epilepsy

Sources:
6Disease Ontology, 30NIH Rare Diseases, 16GeneTests, 17Genetics Home Reference, 33OMIM, 32Novoseek , 43UMLS, 40SNOMED-CT, 27NCIt, 24MeSH
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Aliases & Descriptions:

juvenile myoclonic epilepsy 6 30 17
janz syndrome 6 30 16 17
petit mal, impulsive 30 16 17
juvenile myoclonic epilepsy (disorder) 6 16
jme 30 16
myoclonic epilepsy, juvenile, 1 30
myoclonic epilepsy, juvenile 1 33
adolescent myoclonic epilepsy 17
myoclonic epilepsy, juvenile 43
epilepsy, juvenile myoclonic 33
myoclonic epilepsy juvenile 32
epilepsies, myoclonic 43
absence epilepsy 43
epilepsy 43
ejm 30

External Ids:

SNOMED-CT40 6204001

Related Diseases for Juvenile Myoclonic Epilepsy

Sources:
13GeneCards, 14GeneDecks
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Disease types for juvenile myoclonic epilepsy family:

epilepsy, juvenile myoclonic 8 epilepsy, juvenile myoclonic 6
epilepsy, juvenile myoclonic 3 myoclonic epilepsy, juvenile, 4
epilepsy, juvenile myoclonic 5

Diseases related to juvenile myoclonic epilepsy by text searches and GeneDecks gene sharing:

(show top 50)    (show all 389)
idRelated DiseaseScoreTop Affiliating Genes
1generalized epilepsy with febrile seizures plus32.6KCNQ3, CHRNA4, EFHC1
2childhood absence epilepsy32.3CLCN2, CHRNA4, GABRB3, GABRA1
3absence epilepsy31.9CACNB4, CACNA1E, GABRA1, GABRB3, CHRNA4, CLCN2
4epilepsy syndrome30.5CACNB4, GAD1, GABRA1, GABRB3, CHRNA4, KCNQ3
5idiopathic generalized epilepsy29.9CHRNA4, KCNQ3, EFHC1
6juvenile absence epilepsy29.8EFHC1, CLCN2, GJA8, GABRA1, GABRB3
7seizures29.7KCNJ6, CACNB4, GABRB3, GAD1, GABRD, EFHC1
8epilepsy, juvenile absence, susceptibility to, 129.0EJM1, EFHC1
9convulsions28.3KCNQ3, CHRNA4, CACNB4, GAD1
10episodic ataxia27.9CACNB4, CACNA1E, KCNQ3, KCNA6
11neuronitis26.6GJD2, SLC25A27, EFHC1, GABRD, GAD1, GABRB3
12febrile convulsions26.6CACNB4, CHRNA4, KCNQ3
13myokymia25.1KCNA6, KCNQ3
14benign familial neonatal-infantile seizures24.6CHRNA4, KCNQ3
15bipolar disorder22.9GABRB3, GABRA1, GAD1, HLA-DRB1, CHRFAM7A, CHRNA4
16schizophrenia22.1SLC25A27, TAP1, PKHD1, HLA-DRB1, GJD2, GABRD
17polycystic kidney and hepatic disease12.8TRAM2, PKHD1
18autistic disorder12.4GABRB3, GAD1, CHRNA7, CHRFAM7A
19autism spectrum disorder11.3HLA-DRB1, CHRNA7, GAD1, GABRB3, CHRNA4
20temporal lobe epilepsy11.2
21migraine without aura10.7MEP1A, KCNQ3, CACNB4, CACNA1E, TNFRSF21, RHAG
22progressive myoclonus epilepsy9.7
23myoclonus epilepsy9.7
24myoclonus9.7
25febrile seizures9.2
26frontal lobe epilepsy8.9
27autosomal dominant nocturnal frontal lobe epilepsy8.7
28intractable epilepsy8.6
29focal epilepsy8.4
30lafora disease8.3
31tuberous sclerosis8.3
32pyridoxine-dependent epilepsy8.3
33autosomal dominant partial epilepsy with auditory features8.2
34unverricht-lundborg syndrome8.2
35gabra1-related juvenile myoclonic epilepsy8.1
36gabrd-related juvenile myoclonic epilepsy8.1
37cacnb4-related juvenile myoclonic epilepsy8.1
38clcn2-related juvenile myoclonic epilepsy8.1
39efhc1-related juvenile myoclonic epilepsy8.1
40ejm2-related juvenile myoclonic epilepsy8.1
41ejm3-related juvenile myoclonic epilepsy8.1
42ejm4-related juvenile myoclonic epilepsy8.1
43epilepsy, juvenile myoclonic 38.1
44dravet syndrome8.0
45ataxia8.0
46merrf syndrome7.8
47prickle1-related progressive myoclonus epilepsy with ataxia7.7
48complex partial epilepsy7.5
49reflex epilepsy7.5
50benign epilepsy with centrotemporal spikes7.3

Graphical network of the top 20 diseases related to juvenile myoclonic epilepsy:



Graphical network of diseases related to juvenile myoclonic epilepsy

Clinical Features for Juvenile Myoclonic Epilepsy

Sources:
33OMIM
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Clinical features from OMIM: 254770

Drugs & Therapeutics for Juvenile Myoclonic Epilepsy

Sources:
4CenterWatch, 29NIH Clinical Center, 5ClinicalTrials, 43UMLS, 28NDF-RT
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Approved drugs:

Search CenterWatch for juvenile myoclonic epilepsy

Drug clinical trials:

Search ClinicalTrials for juvenile myoclonic epilepsy

Search NIH Clinical Center for juvenile myoclonic epilepsy

Search CenterWatch for juvenile myoclonic epilepsy

Inferred drug relations via UMLS/NDF-RT:

43 28 anti-epileptic agent [epc], clonazepam, divalproex, divalproex sodium, ethosuximide, mephobarbital, methsuximide, phensuximide, primidone, trimethadione, valproate sodium, valproic acid

Genetic Tests for Juvenile Myoclonic Epilepsy

Anatomical Context for Juvenile Myoclonic Epilepsy

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22MalaCards
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MalaCards organs/tissues related to juvenile myoclonic epilepsy:

22
Brain

Phenotypes for genes affiliated with Juvenile Myoclonic Epilepsy

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25MGI
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MGI Mouse Phenotypes related to juvenile myoclonic epilepsy:

25
idDescriptionMGI Source AccessionScoreTop Affiliating Genes
1homeostasis/metabolism phenotypeMP:00053766.9MEP1A, CACNA1E, GJD2, TNFRSF21, RHAG, GAD1
2nervous system phenotypeMP:00036316.6BRD2, GAD1, EFHC1, TAP1, TNFRSF21, CACNB4
3behavior/neurological phenotypeMP:00053865.7CACNB4, GJD2, EFHC1, GABRD, GAD1, GABRA1

Publications for genes affiliated with Juvenile Myoclonic Epilepsy

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35PubMed
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Articles related to juvenile myoclonic epilepsy:

(show all 38)
idTitleAuthorsYearAffiliating Genes
1GABA(A) receptor alpha1 subunit mutation A322D associ ated with autosomal dominant juvenile myoclonic epilepsy reduces the expression and alters the composition of wild type GABA(A) receptors. (20551311)Ding L.... Gallagher M.J.2010GABRA1
2BRD2 and TAP-1 genes and juvenile myoclonic epilepsy. (19953286)Layouni S.... Dogui M.2010TAP1, BRD2
3The 1674+11C>T polymorphism of CHRNA4 is associate d with juvenile myoclonic epilepsy. (19577488)Rozycka A.... Trzeciak W.H.2009CHRNA4
4DNA variants in coding region of EFHC1: SNPs do not associate with juvenile myoclonic epilepsy. (18823326)Bai D.... Delgado-Escueta A.V.2008EFHC1
5Characterization of the C-terminal half of human juvenile myoclonic epilepsy protein EFHC1: dimer formation blocks Ca2+ and Mg2+ binding to its functional EF-hand. (18593566)Murai M.J.... Lopes-Cendes I.2008EFHC1
6Novel mutations in Myoclonin1/EFHC1 in sporadic and familial juvenile myoclonic epilepsy. (18505993)Medina M.T.... Delgado-Escueta A.V.2008EFHC1
7Advances in genetics of juvenile myoclonic epilepsies. (17520076)Delgado-Escueta A.V.2007GABRA1, BRD2
8Juvenile myoclonic epilepsy with generalised and focal electroencephalographic abnormalities: a case report with a molecular genetic study. (17972043)Bartocci A.... Perticoni G.2007GABRA1, EFHC1
9Mutational analysis of EFHC1 gene in Italian families with juvenile myoclonic epilepsy. (17634063)Annesi F.... Quattrone A.2007EFHC1
10Axonemal protofilament ribbons, DM10 domains, and the link to juvenile myoclonic epilepsy. (16572395)King S.M.2006EFHC1
11Mutation analyses of genes on 6p12-p11 in patients with juvenile myoclonic epilepsy. (16876319)Suzuki T.... Yamakawa K.2006GSTA3, FBXO9, PKHD1
12Mutations in the GABRA1 and EFHC1 genes are rare in familial juvenile myoclonic epilepsy. (16839746)Ma S.... Hedera P.2006GABRA1, EFHC1
13Confirmatory evidence for an association of the connexin-36 gene with juvenile myoclonic epilepsy. (16876983)Hempelmann A.... Sander T.2006GJD2
14Exclusion of the juvenile myoclonic epilepsy gene EFHC1 as the cause of migraine on chromosome 6, but association to two rare polymorphisms in MEP1A and RHAG. (16378686)Norberg A.... Holmberg M.2006TNFRSF21, MEP1A, RHAG
15EFHC1, a protein mutated in juvenile myoclonic epilepsy, associates with the mitotic spindle through its N-terminus. (16824517)de Nijs L.... Chanas G.2006EFHC1
16A new EF-hand containing gene EFHC2 on Xp11.4: tentative evidence for association with juvenile myoclonic epilepsy. (16112844)Gu W.... Steinlein O.K.2005EFHC1, EFHC2
17No association of anti-GM1 and anti-GAD antibodies with juvenile myoclonic epilepsy: a pilot study. (15927491)Aykutlu E.... Saruhan-Direskeneli G.2005GAD1
18Molecular analysis of the A322D mutation in the GABA receptor alpha-subunit causing juvenile myoclonic epilepsy. (16029191)Krampfl K.... Bufler J.2005GABRA1
19Association of the connexin36 gene with juvenile myoclonic epilepsy. (15235036)Mas C.... Meda P.2004GJD2
20Mutations in EFHC1 cause juvenile myoclonic epilepsy. (15258581)Suzuki T.... Yamakawa K.2004CACNA1E, EFHC1
21The juvenile myoclonic epilepsy GABA(A) receptor alpha1 subunit mutation A322D produces asymmetrical, subunit position-dependent reduction of heterozygous receptor currents and alpha1 subunit protein expression. (15201329)Gallagher M.J.... Macdonald R.L.2004GABRA1
22Absence of GABRA1 Ala322Asp mutation in juvenile myoclonic epilepsy families from India. (14631097)Kapoor A.... Anand A.2003GABRA1
23Candidate gene analysis of the human metabotropic glutamate receptor type 4 (GRM4) in patients with juvenile myoclonic epilepsy. (14582146)Izzi C.... Barlati S.2003GRM4, EFHC1, EJM1
24BRD2 (RING3) is a probable major susceptibility gene for common juvenile myoclonic epilepsy. (12830434)Pal D.K.... Greenberg D.A.2003BRD2
25Genetic association analysis of KCNQ3 and juvenile myoclonic epilepsy in a South Indian population. (12928862)Vijai J.... Anand A.2003KCNQ3
26Mutation of GABRA1 in an autosomal dominant form of juvenile myoclonic epilepsy. (11992121)Cossette P.... Rouleau G.A.2002GABRA1
27Identification and mutational analysis of candidate genes for juvenile myoclonic epilepsy on 6p11-p12: LRRC1, GCLC, KIAA0057 and CLIC5. (12200217)Suzuki T.... Yamakawa K.2002CLIC5, LRRC1
28Evaluation of the positional candidate gene CHRNA7 at the juvenile myoclonic epilepsy locus (EJM2) on chromosome 15q13-14. (12049804)Taske N.L.... Gardiner R.M.2002CHRNA7
29A novel gene in the chromosomal region for juvenile myoclonic epilepsy on 6p12 encodes a brain-specific lysosomal membrane protein. (11676489)Suzuki T.... Yamakawa K.2001PAQR8
30Mutation analysis of the inwardly rectifying K(+) channels KCNJ6 (GIRK2) and KCNJ3 (GIRK1) in juvenile myoclonic epilepsy. (10686544)Hallmann K.... Steinlein O.K.2000KCNJ6, KCNJ3
31Lack of association between juvenile myoclonic epilepsy and HLA-DR13. (9924913)Le Hellard S.... Tafti M.1999HLA-DRB1
32Evaluation of a putative major susceptibility locus for juvenile myoclonic epilepsy on chromosome 15q14. (10206240)Sander T.... Riess O.1999CHRNA7
33Lack of association between juvenile myoclonic epilepsy and GABRA5 and GABRB3 genes. (9129713)Guipponi M.... Malafosse A.1997GABRB3
34Genetic mapping of a major susceptibility locus for juvenile myoclonic epilepsy on chromosome 15q. (9259280)Elmslie F.V.... Gardiner R.M.1997CHRNA4, EJM2
35Juvenile myoclonic epilepsy in chromosome 6p12-p11: locus heterogeneity and recombinations. (8737649)Liu A.W.... Sparkes R.S.1996EFHC1
36Analysis of a human brain voltage-gated potassium channel gene, KCNA6 (HBK2), in patients with juvenile myoclonic epilepsy. (8719753)Rees M.... Gardiner M.1995KCNA6
37Possible association of juvenile myoclonic epilepsy with HLA-DRw6. (1396421)Durner M.... Greenberg D.A.1992HLA-DRB1
38Localization of idiopathic generalized epilepsy on chromosome 6p in families of juvenile myoclonic epilepsy patients. (1922810)Durner M.... Janz D.1991EGI

Expression for genes affiliated with Juvenile Myoclonic Epilepsy

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1BioGPS
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Expression patterns in normal tissues for genes affiliated with Juvenile Myoclonic Epilepsy

Pathways for genes affiliated with Juvenile Myoclonic Epilepsy

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10EMD Millipore, 38Reactome, 20KEGG, 36QIAGEN
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Compounds for genes affiliated with Juvenile Myoclonic Epilepsy

Sources:
42Tocris Bioscience, 9DrugBank, 32Novoseek , 34PharmGKB, 18HMDB
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Compounds related to juvenile myoclonic epilepsy according to GeneDecks:

(show top 50)    (show all 54)
idCompoundScoreTop Affiliating Genes
1pha 543613 hydrochloride42 10.6CHRNA7, CHRFAM7A
2pnu 12059642 10.5CHRNA7, CHRFAM7A
3methyllycaconitine citrate42 10.5CHRNA7, CHRFAM7A
4pnu 28298742 10.5CHRNA7, CHRFAM7A
5Heptabarbital9 9 11.5CHRNA4, CHRNA7, GABRA1
6Butalbital9 9 11.4GABRA1, CHRNA4, CHRNA7
7Metharbital9 9 11.4CHRNA7, CHRNA4, GABRA1
8Talbutal9 9 11.4CHRNA7, CHRNA4, GABRA1
9Barbituric acid derivative9 9 11.4GABRA1, CHRNA4, CHRNA7
10Aprobarbital9 9 11.4CHRNA7, CHRNA4, GABRA1
11Barbital9 9 11.4CHRNA7, CHRNA4, GABRA1
12Butabarbital9 9 11.4CHRNA7, CHRNA4, GABRA1
13Butethal9 9 11.4CHRNA7, CHRNA4, GABRA1
14Methylphenobarbital9 9 11.4GABRA1, CHRNA4, CHRNA7
15amobarbital32 9 9 12.4GABRA1, CHRNA4, CHRNA7
16Secobarbital9 9 11.4GABRA1, CHRNA4, CHRNA7
17primidone32 9 9 12.4GABRA1, CHRNA4, CHRNA7
18hexobarbital32 9 9 12.4GABRA1, CHRNA4, CHRNA7
19thiopental32 9 9 12.4GABRA1, CHRNA4, CHRNA7
20epibatidine32 9 9 12.4CHRNA7, CHRFAM7A
21alpha-conotoxin imi42 10.3CHRNA7, CHRFAM7A
22pentobarbital32 9 9 12.3CHRNA7, CHRNA4, GABRA1
23varenicline32 9 9 12.1CHRNA7, CHRNA4
24Fludiazepam9 9 11.0GABRD, GABRA1, GABRB3
25Cinolazepam9 9 11.0GABRD, GABRA1, GABRB3
26Halazepam9 9 11.0GABRB3, GABRA1, GABRD
27sr 95531 hydrobromide42 10.0GABRB3, GABRA1, GABRD
28(+)-bicuculline42 10.0GABRB3, GABRA1, GABRD
29Prazepam9 9 11.0GABRB3, GABRA1, GABRD
30Adinazolam9 9 11.0GABRB3, GABRA1, GABRD
31estazolam32 9 9 12.0GABRB3, GABRA1, GABRD
32quazepam32 9 9 12.0GABRB3, GABRA1, GABRD
33Clotiazepam9 9 11.0GABRB3, GABRA1, GABRD
34Clorazepate9 9 10.9GABRB3, GABRA1, GABRD
35Oxazepam9 9 10.9GABRB3, GABRA1, GABRD
36nitrazepam32 9 9 11.9GABRB3, GABRA1, GABRD
37flurazepam32 9 9 11.9GABRB3, GABRA1, GABRD
38clobazam34 32 9 9 12.9GABRB3, GABRA1, GABRD
39bromazepam32 9 9 11.9GABRB3, GABRA1, GABRD
40Temazepam9 9 10.8GABRB3, GABRA1, GABRD
41clonazepam32 9 9 11.8GABRB3, GABRA1, GABRD
42lorazepam32 34 9 9 12.8GABRB3, GABRA1, GABRD
43chlordiazepoxide32 9 9 11.8GABRD, GABRA1, GABRB3
44muscimol32 42 10.6GABRD, GAD1, GABRA1, GABRB3
45triazolam32 9 9 11.6GABRB3, GABRA1, GABRD
46chlorine32 18 10.5GABRB3, GABRA1, GABRD, CLIC5, CLCN2
47clozapine32 34 9 9 12.4KCNJ6, KCNJ3, CHRNA7, GAD1
48alprazolam32 9 9 11.3GABRD, GABRA1, GABRB3
49gaba32 42 10.2GABRB3, GABRA1, GAD1, GJD2, GRM4, CHRNA7
50potassium32 9 18 9 11.5GAD1, CHRNA4, KCNQ3, KCNJ3, KCNA6, KCNJ6

GO Terms for genes affiliated with Juvenile Myoclonic Epilepsy

Sources:
12Gene Ontology
See all sources

Cellular components related to juvenile myoclonic epilepsy according to GeneDecks:

idNameGO IDScoreTop Affiliating Genes
1voltage-gated potassium channel complexGO:0080769.2KCNJ6, KCNA6, KCNJ3, KCNQ3
2chloride channel complexGO:0347079.1CLCN2, CLIC5, GABRD, GABRA1, GABRB3
3postsynaptic membraneGO:0452119.0GABRB3, GABRA1, GABRD, CHRNA4, CHRNA7, CHRFAM7A
4plasma membraneGO:0058865.3GJD2, HLA-DRB1, TNFRSF21, RHAG, GAD1, GABRA1

Biological processes related to juvenile myoclonic epilepsy according to GeneDecks:

idNameGO IDScoreTop Affiliating Genes
1membrane depolarizationGO:0518999.3CACNB4, CACNA1E, CHRNA4
2potassium ion transportGO:0068139.2KCNJ6, KCNA6, KCNJ3, KCNQ3
3transportGO:0068108.0GABRB3, GABRA1, GABRD, SLC25A27, GJA8, CACNB4
4synaptic transmissionGO:0072686.5KCNJ6, GABRB3, GABRA1, GAD1, GABRD, GJD2

Molecular functions related to juvenile myoclonic epilepsy according to GeneDecks:

idNameGO IDScoreTop Affiliating Genes
1G-protein activated inward rectifier potassium channel activityGO:0154679.9KCNJ6, KCNJ3
2extracellular ligand-gated ion channel activityGO:0052309.3CHRFAM7A, GABRD, GABRA1, GABRB3
3GABA-A receptor activityGO:0048909.3GABRD, GABRA1, GABRB3

Sources for Juvenile Myoclonic Epilepsy

2CDC
11FMA
18HMDB
19ICD9CM
20KEGG
24MeSH
25MGI
27NCIt
28NDF-RT
31NINDS
32Novoseek
33OMIM
35PubMed
36QIAGEN
43UMLS