chr11-59755634-C-T

Position:

chr11-59755634-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_004177.5(STX3):c.29C>T(p.Ala10Val) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000772 in 1,593,574 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000077 ( 0 hom. )

Consequence

STX3
NM_004177.5 missense, splice_region

Scores

Splicing: ADA: 0.02986

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.33

Variant links:

Genes affected

STX3 (HGNC:11438): (syntaxin 3) The gene is a member of the syntaxin family. The encoded protein is targeted to the apical membrane of epithelial cells where it forms clusters and is important in establishing and maintaining polarity necessary for protein trafficking involving vesicle fusion and exocytosis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2010]

STX3 links:

STX3 (HGNC:):

STX3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.01692605).

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0000788 (12/152312) while in subpopulation SAS AF= 0.00248 (12/4832). AF 95% confidence interval is 0.00143. There are 0 homozygotes in gnomad4. There are 7 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
STX3	NM_004177.5 linkuse as main transcript	c.29C>T	p.Ala10Val	missense_variant, splice_region_variant	1/11	ENST00000337979.9	NP_004168.1	Q13277-1Q53YE2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
STX3	ENST00000337979.9 linkuse as main transcript	c.29C>T	p.Ala10Val	missense_variant, splice_region_variant	1/11	1	NM_004177.5	ENSP00000338562.4		Q13277-1

Frequencies

GnomAD3 genomes

AF:

0.0000788

AC:

AN:

152196

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00248

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000168

AC:

AN:

226636

Hom.:

AF XY:

0.000233

AC XY:

AN XY:

124612

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00122

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000176

GnomAD4 exome

AF:

0.0000770

AC:

111

AN:

1441262

Hom.:

Cov.:

AF XY:

0.000106

AC XY:

AN XY:

717658

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00123

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.03e-7

Gnomad4 OTH exome

AF:

0.0000668

GnomAD4 genome

AF:

0.0000788

AC:

AN:

152312

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00248

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.000132

AC:

Asia WGS

AF:

0.00231

AC:

AN:

3478

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

Labcorp Genetics (formerly Invitae), Labcorp

Apr 11, 2022

This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 10 of the STX3 protein (p.Ala10Val). This variant is present in population databases (rs557835574, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with STX3-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.53

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.066

T;.;.

Eigen

Benign

-0.48

Eigen_PC

Benign

-0.36

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.64

T;T;T

M_CAP

Benign

0.068

MetaRNN

Benign

0.017

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.1

M;.;M

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-1.6

N;.;N

REVEL

Benign

0.024

Sift

Benign

0.036

D;.;D

Sift4G

Uncertain

0.047

D;D;D

Polyphen

0.0020

B;.;.

Vest4

0.25

MutPred

0.24

Gain of methylation at K11 (P = 0.0434);Gain of methylation at K11 (P = 0.0434);Gain of methylation at K11 (P = 0.0434);

MVP

0.40

MPC

0.091

ClinPred

0.035

GERP RS

2.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.12

gMVP

0.29

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.030

dbscSNV1_RF

Benign

0.20

SpliceAI score (max)

0.85

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.85

Position offset: -2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over