MCID: BNG006
MIFTS: 36

Benign Familial Neonatal Epilepsy

Categories: Rare diseases, Genetic diseases, Neuronal diseases

Aliases & Classifications for Benign Familial Neonatal Epilepsy

MalaCards integrated aliases for Benign Familial Neonatal Epilepsy:

Name: Benign Familial Neonatal Epilepsy 12 49 55 14
Benign Familial Neonatal Convulsions 49 55
Benign Familial Neonatal Seizures 49 55
Bfns 49 55
Epilepsy Benign Neonatal Familial 72
Familial Benign Neonatal Epilepsy 69
Epilepsy, Benign Neonatal, 2 69
Familial Neonatal Seizures 12
Benign Familial Convulsion 69

Characteristics:

Orphanet epidemiological data:

55
benign familial neonatal epilepsy
Inheritance: Autosomal dominant; Age of onset: Neonatal; Age of death: normal life expectancy;

Classifications:

Orphanet: 55  
Rare neurological diseases


External Ids:

Disease Ontology 12 DOID:14777
MeSH 41 D020936
SNOMED-CT 64 230410004 279953009
Orphanet 55 ORPHA1949
MESH via Orphanet 42 C535466 D020936
UMLS via Orphanet 70 C0220669 C2930911
ICD10 via Orphanet 33 G40.3

Summaries for Benign Familial Neonatal Epilepsy

NIH Rare Diseases : 49 The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.Orpha Number: 1949Disease definitionBenign familial neonatal epilepsy (BFNE) is a rare genetic epilepsy syndrome characterized by the occurrence of afebrile seizures in otherwise healthy newborns with onset in the first few days of life.EpidemiologyPrevalence is currently unknown since this disorder is possibly overlooked. About 100 families have been reported to date.Clinical descriptionSeizure onset is usually between the second and the eighth day of life, in otherwise healthy newborns. Seizures are mostly focal involving alternatively both sides of the body and apnea is frequently associated. Seizures can be isolated or in clusters, are generally brief and last 1-2 minutes. However, they can be very frequent, occurring up to 20 times a day, and may evolve into status epilepticus. Seizures can occur during wakefulness and/or sleep, and are of a mixed type, starting with tonic posture and apnea, and often progressing to clonic movements and motor automatisms. During the interictal period, neonates are neurologically normal, although some degree of sedation can be seen in response to anti-epileptic medications. Although most patients do receive antiepileptic treatment in the neonatal period, seizures have been shown to remit spontaneously after the first months of life, and are usually not seen after the first year of life. However, about 10 to 15% of patients have febrile or afebrile seizures later in childhood. Subsequent psychomotor development is normal.EtiologyBFNE is a genetically heterogeneous disorder due to mutations in the KCNQ2 (20q13.33) and KCNQ3 (8q24) genes that both code for voltage-gated potassium channel subunits. Mutations in KCNQ2 are also responsible for KCNQ2-related epileptic encephalopathy, a severe form of neonatal epilepsy.Diagnostic methodsElectroclinical events are suggestive of the disorder. Asymmetric tonic posturing associated with apnea and followed by focal or bilateral clonic jerking is the typical seizure type. In BFNE, neonates are neurologically normal and neurocognitive development is normal. Ictal electroencephalogram (EEG) may show focal interictal abnormalities, mainly over the central regions, but otherwise the EEG background is normal. The diagnosis is confirmed by genetic testing.Differential diagnosisDifferential diagnosis includes benign familial neonatal-infantile seizures and benign familial infantile epilepsy (see these terms).Antenatal diagnosisPrenatal diagnosis is possible if the disease-causing mutation has already been identified in the family.Genetic counselingTransmission is autosomal dominant with incomplete penetrance. Genetic counseling should be offered to affected families informing them of the 50% chance the offspring has of inheriting the disease-causing mutation and therefore being affected with the disorder. Rare cases are due to de novo mutations.Management and treatmentThe use of anticonvulsant therapy (e.g. phenobarbital, phenytoin, valproate, carbamazepine) is needed in most case to stop seizures in the neonatal period, particularly in cases with very frequent seizures or status epilepticus. Usually, patients require treatment for the first 6-12 months of life. However, it is important for clinicians and family to be aware that some patients require treatment beyond 12 months of age.PrognosisPrognosis is good. Seizures normally disappear during the first year of life and patients do not display any neurological sequelae. Later seizures have been reported, including occasional febrile seizures and idiopathic epilepsy syndromes in childhood, in particular rolandic epilepsy (see this term).Visit the Orphanet disease page for more resources. Last updated: 7/20/2015

MalaCards based summary : Benign Familial Neonatal Epilepsy, also known as benign familial neonatal convulsions, is related to benign neonatal seizures and seizures, benign familial infantile, 3, and has symptoms including seizures, hypertonia and cognitive impairment. An important gene associated with Benign Familial Neonatal Epilepsy is KCNQ2 (Potassium Voltage-Gated Channel Subfamily Q Member 2), and among its related pathways/superpathways are Transmission across Chemical Synapses and Neuroscience. Related phenotypes are behavior/neurological and nervous system

Wikipedia : 72 Benign familial neonatal seizures (BFNS), formerly called benign familial neonatal convulsions (BFNC),... more...

Related Diseases for Benign Familial Neonatal Epilepsy

Diseases related to Benign Familial Neonatal Epilepsy via text searches within MalaCards or GeneCards Suite gene sharing:

(show all 26)
# Related Disease Score Top Affiliating Genes
1 benign neonatal seizures 31.8 KCNQ2 KCNQ3 SCN2A
2 seizures, benign familial infantile, 3 31.8 KCNQ2 KCNQ3 SCN2A
3 epilepsy 29.9 KCNQ2 KCNQ3 TBC1D24
4 convulsions benign familial neonatal dominant form 11.6
5 kcnq2-related disorders 11.0
6 seizures, benign familial neonatal, 2 10.3 KCNQ2 KCNQ3
7 epileptic encephalopathy, early infantile, 1 10.2 KCNQ2 TBC1D24
8 visual epilepsy 10.2 KCNQ2 PRRT2
9 childhood electroclinical syndrome 10.1 KCNQ2 TBC1D24
10 epilepsy with generalized tonic-clonic seizures 10.1 SCN2A TBC1D24
11 malignant migrating partial seizures of infancy 10.1 SCN2A TBC1D24
12 unverricht-lundborg syndrome 10.1 KCNQ3 TBC1D24
13 benign epilepsy with centrotemporal spikes 10.1 KCNQ2 KCNQ3 PRRT2
14 seizure disorder 10.0 KCNQ2 PRRT2 SCN2A
15 lennox-gastaut syndrome 9.9 KCNQ2 TBC1D24
16 epilepsy, idiopathic generalized 10 9.9 GABRA6 KCNQ3 TBC1D24
17 episodic ataxia 9.8 PRRT2 SCN2A
18 neonatal period electroclinical syndrome 9.8 KCNQ2 KCNQ3 SCN2A TBC1D24
19 epileptic encephalopathy, early infantile, 6 9.8 KCNQ2 KCNQ3 SCN2A TBC1D24
20 infancy electroclinical syndrome 9.8 KCNQ2 PRRT2 SCN2A TBC1D24
21 generalized epilepsy with febrile seizures plus 9.8 KCNQ2 KCNQ3 SCN2A TBC1D24
22 epilepsy, idiopathic generalized 9.7 KCNQ2 KCNQ3 SCN2A TBC1D24
23 epilepsy, nocturnal frontal lobe, 1 9.7 CRH KCNQ2 KCNQ3
24 epileptic encephalopathy, early infantile, 15 9.7 KCNQ2 KCNQ3 SCN2A STX1A
25 benign familial infantile epilepsy 9.6 GABRA6 KCNQ2 KCNQ3 PRRT2 SCN2A
26 west syndrome 9.4 CRH KCNQ2 SCN2A TBC1D24

Graphical network of the top 20 diseases related to Benign Familial Neonatal Epilepsy:



Diseases related to Benign Familial Neonatal Epilepsy

Symptoms & Phenotypes for Benign Familial Neonatal Epilepsy

Human phenotypes related to Benign Familial Neonatal Epilepsy:

55 31
# Description HPO Frequency Orphanet Frequency HPO Source Accession
1 seizures 55 31 hallmark (90%) Very frequent (99-80%) HP:0001250
2 hypertonia 55 31 hallmark (90%) Very frequent (99-80%) HP:0001276
3 cognitive impairment 55 31 occasional (7.5%) Occasional (29-5%) HP:0100543

UMLS symptoms related to Benign Familial Neonatal Epilepsy:


cyanosis

MGI Mouse Phenotypes related to Benign Familial Neonatal Epilepsy:

43
# Description MGI Source Accession Score Top Affiliating Genes
1 behavior/neurological MP:0005386 9.56 CRH GABRA6 KCNQ2 KCNQ3 LOX PRRT2
2 nervous system MP:0003631 9.23 KCNQ3 MLST8 PRRT2 SCN2A STX1A CRH

Drugs & Therapeutics for Benign Familial Neonatal Epilepsy

Search Clinical Trials , NIH Clinical Center for Benign Familial Neonatal Epilepsy

Genetic Tests for Benign Familial Neonatal Epilepsy

Anatomical Context for Benign Familial Neonatal Epilepsy

Publications for Benign Familial Neonatal Epilepsy

Articles related to Benign Familial Neonatal Epilepsy:

# Title Authors Year
1
Novel KCNQ3 Mutation in a Large Family with Benign Familial Neonatal Epilepsy: A Rare Cause of Neonatal Seizures. ( 27781029 )
2016
2
Exacerbation of benign familial neonatal epilepsy induced by massive doses of phenobarbital and midazolam. ( 25079576 )
2014
3
Potassium channel genes and benign familial neonatal epilepsy. ( 25194482 )
2014
4
In vivo loss of slow potassium channel activity in individuals with benign familial neonatal epilepsy in remission. ( 23065794 )
2012
5
Benign familial neonatal epilepsy with mutations in two potassium channel genes. ( 10226745 )
1999

Variations for Benign Familial Neonatal Epilepsy

ClinVar genetic disease variations for Benign Familial Neonatal Epilepsy:

6
# Gene Variation Type Significance SNP ID Assembly Location
1 KCNQ3 NM_004519.3(KCNQ3): c.988C> T (p.Arg330Cys) single nucleotide variant Pathogenic/Likely pathogenic rs118192251 GRCh37 Chromosome 8, 133186542: 133186542
2 KCNQ2 NM_172107.3(KCNQ2): c.346_348delAAG (p.Lys116del) deletion Pathogenic rs118192192 GRCh37 Chromosome 20, 62078139: 62078141

Copy number variations for Benign Familial Neonatal Epilepsy from CNVD:

7
# CNVD ID Chromosom Start End Type Gene Symbol CNVD Disease
1 155270 20 54400000 62435964 Copy number KCNQ2 benign familial neonatal convulsions
2 232536 8 117700000 146274826 Copy number KCNQ3 benign familial neonatal convulsions

Expression for Benign Familial Neonatal Epilepsy

Search GEO for disease gene expression data for Benign Familial Neonatal Epilepsy.

Pathways for Benign Familial Neonatal Epilepsy

Pathways related to Benign Familial Neonatal Epilepsy according to GeneCards Suite gene sharing:

# Super pathways Score Top Affiliating Genes
1
Show member pathways
12.31 GABRA6 KCNQ2 KCNQ3 STX1A
2 12.03 KCNQ2 SCN2A STX1A
3
Show member pathways
11.23 KCNQ2 KCNQ3 SCN2A
4 11.02 KCNQ2 KCNQ3
5 10.28 KCNQ2 KCNQ3 SCN2A

GO Terms for Benign Familial Neonatal Epilepsy

Cellular components related to Benign Familial Neonatal Epilepsy according to GeneCards Suite gene sharing:

# Name GO ID Score Top Affiliating Genes
1 integral component of plasma membrane GO:0005887 9.65 GABRA6 KCNQ2 KCNQ3 SCN2A STX1A
2 cell junction GO:0030054 9.62 GABRA6 PRRT2 STX1A TBC1D24
3 axon initial segment GO:0043194 9.16 KCNQ2 KCNQ3
4 voltage-gated potassium channel complex GO:0008076 9.13 KCNQ2 KCNQ3 STX1A
5 node of Ranvier GO:0033268 8.8 KCNQ2 KCNQ3 SCN2A

Biological processes related to Benign Familial Neonatal Epilepsy according to GeneCards Suite gene sharing:

# Name GO ID Score Top Affiliating Genes
1 transport GO:0006810 9.77 GABRA6 KCNQ2 KCNQ3 SCN2A STX1A
2 ion transport GO:0006811 9.56 GABRA6 KCNQ2 KCNQ3 SCN2A
3 ion transmembrane transport GO:0034220 9.5 GABRA6 KCNQ2 SCN2A
4 transmembrane transport GO:0055085 9.46 GABRA6 KCNQ2 KCNQ3 SCN2A
5 chemical synaptic transmission GO:0007268 9.13 CRH KCNQ2 KCNQ3
6 regulation of ion transmembrane transport GO:0034765 8.8 KCNQ2 KCNQ3 SCN2A

Molecular functions related to Benign Familial Neonatal Epilepsy according to GeneCards Suite gene sharing:

# Name GO ID Score Top Affiliating Genes
1 voltage-gated potassium channel activity GO:0005249 8.96 KCNQ2 KCNQ3
2 voltage-gated ion channel activity GO:0005244 8.8 KCNQ2 KCNQ3 SCN2A

Sources for Benign Familial Neonatal Epilepsy

3 CDC
7 CNVD
9 Cosmic
10 dbSNP
11 DGIdb
16 ExPASy
18 FMA
27 GO
28 GTR
29 HGMD
30 HMDB
31 HPO
32 ICD10
33 ICD10 via Orphanet
34 ICD9CM
35 IUPHAR
36 KEGG
37 LifeMap
39 MedGen
41 MeSH
42 MESH via Orphanet
43 MGI
45 NCI
46 NCIt
47 NDF-RT
50 NINDS
51 Novoseek
53 OMIM
54 OMIM via Orphanet
58 PubMed
60 QIAGEN
65 SNOMED-CT via HPO
66 SNOMED-CT via Orphanet
67 TGDB
68 Tocris
69 UMLS
70 UMLS via Orphanet
Content
Loading form....