9-127678505-G-C
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Variant summary
Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1PM2PP2PP3_Strong
The NM_003165.6(STXBP1):c.1434G>C(p.Trp478Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
STXBP1
NM_003165.6 missense
NM_003165.6 missense
Scores
10
2
1
Clinical Significance
Conservation
PhyloP100: 9.60
Genes affected
STXBP1 (HGNC:11444): (syntaxin binding protein 1) This gene encodes a syntaxin-binding protein. The encoded protein appears to play a role in release of neurotransmitters via regulation of syntaxin, a transmembrane attachment protein receptor. Mutations in this gene have been associated with infantile epileptic encephalopathy-4. Alternatively spliced transcript variants have been described. [provided by RefSeq, Feb 2010]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 9 ACMG points.
PM1
In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 7 uncertain in NM_003165.6
PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant where missense usually causes diseases, STXBP1
PP3
MetaRNN computational evidence supports a deleterious effect, 0.987
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
STXBP1 | NM_003165.6 | c.1434G>C | p.Trp478Cys | missense_variant | 16/20 | ENST00000373302.8 | |
STXBP1 | NM_001032221.6 | c.1434G>C | p.Trp478Cys | missense_variant | 16/19 | ENST00000373299.5 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
STXBP1 | ENST00000373302.8 | c.1434G>C | p.Trp478Cys | missense_variant | 16/20 | 1 | NM_003165.6 | P3 | |
STXBP1 | ENST00000373299.5 | c.1434G>C | p.Trp478Cys | missense_variant | 16/19 | 1 | NM_001032221.6 | A1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD4 exome Cov.: 31
GnomAD4 exome
Cov.:
31
GnomAD4 genome Cov.: 32
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Oct 05, 2017 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D;.;D;D;D;D;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D;D;D;D;D;D
MetaSVM
Uncertain
D
MutationTaster
Benign
D;D
PrimateAI
Pathogenic
D
Polyphen
1.0
.;.;D;.;.;.;D
Vest4
0.94, 0.95
MutPred
0.89
.;.;Loss of MoRF binding (P = 0.0262);Loss of MoRF binding (P = 0.0262);Loss of MoRF binding (P = 0.0262);.;Loss of MoRF binding (P = 0.0262);
MVP
0.81
MPC
3.0
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at