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Early onset or syndromic epilepsy v4.28 UNC13B Achchuthan Shanmugasundram Phenotypes for gene: UNC13B were changed from partial epilepsy, MONDO:0005384 to partial epilepsy, MONDO:0005384
Early onset or syndromic epilepsy v4.28 UNC13B Achchuthan Shanmugasundram Phenotypes for gene: UNC13B were changed from Epilepsy to partial epilepsy, MONDO:0005384
Early onset or syndromic epilepsy v4.27 UNC13B Achchuthan Shanmugasundram Publications for gene: UNC13B were set to 33876820; 35380625
Early onset or syndromic epilepsy v4.27 UNC13B Achchuthan Shanmugasundram Publications for gene: UNC13B were set to 33876820; 35380625
Early onset or syndromic epilepsy v4.27 UNC13B Achchuthan Shanmugasundram Publications for gene: UNC13B were set to 33876820
Early onset or syndromic epilepsy v4.26 UNC13B Achchuthan Shanmugasundram Classified gene: UNC13B as Red List (low evidence)
Early onset or syndromic epilepsy v4.26 UNC13B Achchuthan Shanmugasundram Gene: unc13b has been classified as Red List (Low Evidence).
Early onset or syndromic epilepsy v4.26 UNC13B Achchuthan Shanmugasundram Classified gene: UNC13B as Red List (low evidence)
Early onset or syndromic epilepsy v4.26 UNC13B Achchuthan Shanmugasundram Gene: unc13b has been classified as Red List (Low Evidence).
Early onset or syndromic epilepsy v4.26 UNC13B Achchuthan Shanmugasundram Classified gene: UNC13B as Red List (low evidence)
Early onset or syndromic epilepsy v4.26 UNC13B Achchuthan Shanmugasundram Gene: unc13b has been classified as Red List (Low Evidence).
Early onset or syndromic epilepsy v4.25 UNC13B Achchuthan Shanmugasundram reviewed gene: UNC13B: Rating: RED; Mode of pathogenicity: None; Publications: 33876820, 35380625; Phenotypes: partial epilepsy, MONDO:0005384; Mode of inheritance: None
Early onset or syndromic epilepsy v2.435 UNC13B Zornitza Stark gene: UNC13B was added
gene: UNC13B was added to Genetic epilepsy syndromes. Sources: Literature
Mode of inheritance for gene: UNC13B was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
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. 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: Literature