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Mendeliome v0.9328 UNC13B Zornitza Stark gene: UNC13B was added
gene: UNC13B was added to Mendeliome. Sources: Expert Review
Mode of inheritance for gene: UNC13B was set to BOTH monoallelic and biallelic, autosomal or pseudoautosomal
Publications for gene: UNC13B were set to 33876820
Phenotypes for gene: UNC13B were set to Epilepsy
Review for gene: UNC13B was set to RED
Added comment: No OMIM human disease association. Gene encodes a presynaptic protein Munc13-2 highly expressed in the brain (predominantly cerebral cortex).

Variant interpretation data in human epilepsy cohort somewhat conflicting and restricted to a single study. Conflicting data esp regarding MOI, and evidence for pathogenicity of several of the variants is limited.

Wang et al, Brain, 2021 - trio-based whole-exome sequencing identified UNC13B in 12 individuals affected by partial epilepsy and/or febrile seizures from 8 unrelated families. Identified:
x1 de novo nonsense variant, absent in gnomad, damaging in silicos
x1 de novo splice site, absent in gnomad, damaging in silicos
x1 splice site variant present in unaffected mother (low frequency in gnomad)
x2 compound het in one individual - more severe phenotype postulated (x1 variant present in contro cohortl, the other variant present in low frequency in gnomad)
x1 missense variant - in Han Chinese major depressive disorders study, not in gnomad
x1 missense variant - highly conserved residue, not in gnomad
x2 other missense variant - highly conserved residue, low frequency in gnomad
Latter 4 missense variants cosegregated with affected individuals in the families

In Drosophila, seizure rate and duration were increased by Unc13b knockdown compared to wild-type flies, but these effects were less pronounced than in sodium voltage-gated channel alpha subunit 1 (Scn1a) knockdown Drosophila

De novo UNC13B variants previously reported in bipolar disorder and autism spectrum disorder
Sources: Expert Review
Mendeliome v0.7648 SCN1A Zornitza Stark Phenotypes for gene: SCN1A were changed from Epileptic encephalopathy, early infantile, 6 (Dravet syndrome), MIM# 607208; Genetic Epilepsy Febrile Seizures plus (GEFS+) Syndrome; Febrile seizures; Arthrogryposis multiplex congenita to Epileptic encephalopathy, early infantile, 6 (Dravet syndrome), MIM# 607208; Developmental and epileptic encephalopathy 6B, non-Dravet, MIM# 619317; Genetic Epilepsy Febrile Seizures plus (GEFS+) Syndrome; Febrile seizures; Arthrogryposis multiplex congenita
Mendeliome v0.7647 SCN1A Zornitza Stark edited their review of gene: SCN1A: Changed phenotypes: Epileptic encephalopathy, early infantile, 6 (Dravet syndrome), MIM# 607208, Developmental and epileptic encephalopathy 6B, non-Dravet, MIM# 619317, Genetic Epilepsy Febrile Seizures plus (GEFS+) Syndrome, Febrile seizures, Arthrogryposis multiplex congenita
Mendeliome v0.4746 SCN1A Zornitza Stark Publications for gene: SCN1A were set to 30368457; 12754708; 25754450; 32928894
Mendeliome v0.4745 SCN1A Zornitza Stark edited their review of gene: SCN1A: Changed publications: 29543227
Mendeliome v0.4745 SCN1A Zornitza Stark Phenotypes for gene: SCN1A were changed from Epileptic encephalopathy, early infantile, 6 (Dravet syndrome), MIM# 607208 to Epileptic encephalopathy, early infantile, 6 (Dravet syndrome), MIM# 607208; Genetic Epilepsy Febrile Seizures plus (GEFS+) Syndrome; Febrile seizures; Arthrogryposis multiplex congenita
Mendeliome v0.4744 SCN1A Zornitza Stark Publications for gene: SCN1A were set to 30368457; 12754708; 25754450
Mendeliome v0.4743 SCN1A Zornitza Stark edited their review of gene: SCN1A: Added comment: Note we have reported the association with AMC previously in PMID 29543227 (Supplementary info) in an infant presenting with AMC and severe EE, and de novo p.(Ile1347Asn) variant which at the time was thought to only partially explain the phenotype, but in light of this new report, likely fully explains the phenotype. Given the presence of severe seizure disorder in the two infants who were phenotyped in the newborn period, this likely represents the severe end of the spectrum of SCN1A-related disorders rather than a distinct association.; Changed phenotypes: Epileptic encephalopathy, early infantile, 6 (Dravet syndrome), MIM# 607208, Genetic Epilepsy Febrile Seizures plus (GEFS+) Syndrome, Febrile seizures, Arthrogryposis multiplex congenita
Mendeliome v0.4743 SCN1A Zornitza Stark Deleted their comment
Mendeliome v0.4742 SCN1A Arina Puzriakova reviewed gene: SCN1A: Rating: AMBER; Mode of pathogenicity: None; Publications: 32928894; Phenotypes: Arthrogryposis multiplex congenita; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Mendeliome v0.2404 SCN1A Zornitza Stark Marked gene: SCN1A as ready
Mendeliome v0.2404 SCN1A Zornitza Stark Gene: scn1a has been classified as Green List (High Evidence).
Mendeliome v0.2404 SCN1A Zornitza Stark Phenotypes for gene: SCN1A were changed from to Epileptic encephalopathy, early infantile, 6 (Dravet syndrome), MIM# 607208
Mendeliome v0.2403 SCN1A Zornitza Stark Publications for gene: SCN1A were set to
Mendeliome v0.2402 SCN1A Zornitza Stark Mode of inheritance for gene: SCN1A was changed from Unknown to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Mendeliome v0.2362 SCN1A Ee Ming Wong reviewed gene: SCN1A: Rating: GREEN; Mode of pathogenicity: None; Publications: PMID: 30368457, 12754708, 25754450; Phenotypes: Dravet Syndrome, Genetic Epilepsy Febrile Seizures plus (GEFS+) Syndrome, Febrile seizures; Mode of inheritance: MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted; Current diagnostic: yes
Mendeliome v0.0 SCN1A Zornitza Stark gene: SCN1A was added
gene: SCN1A was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: SCN1A was set to Unknown