7-73700734-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 1P and 2B. PP2BP4_Moderate

The NM_004603.4(STX1A):c.785G>A(p.Arg262His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,613,510 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

STX1A
NM_004603.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 7.57

Publications

1 publications found

Variant links:

Genes affected

STX1A (HGNC:11433): (syntaxin 1A) This gene encodes a member of the syntaxin superfamily. Syntaxins are nervous system-specific proteins implicated in the docking of synaptic vesicles with the presynaptic plasma membrane. Syntaxins possess a single C-terminal transmembrane domain, a SNARE [Soluble NSF (N-ethylmaleimide-sensitive fusion protein)-Attachment protein REceptor] domain (known as H3), and an N-terminal regulatory domain (Habc). Syntaxins bind synaptotagmin in a calcium-dependent fashion and interact with voltage dependent calcium and potassium channels via the C-terminal H3 domain. This gene product is a key molecule in ion channel regulation and synaptic exocytosis. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Sep 2009]

STX1A Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AD Classification: MODERATE Submitted by: G2P
cystic fibrosis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
neurodevelopmental disorder
Inheritance: AR Classification: LIMITED Submitted by: G2P

STX1A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 3 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 2.3989 (below the threshold of 3.09). Trascript score misZ: 2.9044 (below the threshold of 3.09). GenCC associations: The gene is linked to cystic fibrosis, complex neurodevelopmental disorder, neurodevelopmental disorder.

BP4

Computational evidence support a benign effect (MetaRNN=0.17309812).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
STX1A	NM_004603.4 link	c.785G>A	p.Arg262His	missense_variant	Exon 9 of 10	ENST00000222812.8	NP_004594.1	Q16623-1Q75ME0
STX1A	NM_001165903.2 link	c.739G>A	p.Ala247Thr	missense_variant	Exon 9 of 10		NP_001159375.1	Q16623-3
STX1A	XM_047420777.1 link	c.*148G>A		3_prime_UTR_variant	Exon 9 of 9		XP_047276733.1
STX1A	XM_047420778.1 link	c.*93G>A		3_prime_UTR_variant	Exon 9 of 9		XP_047276734.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
STX1A	ENST00000222812.8 link	c.785G>A	p.Arg262His	missense_variant	Exon 9 of 10	1	NM_004603.4	ENSP00000222812.3		Q16623-1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151844

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000159

AC:

AN:

251140

AF XY:

0.0000295

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.00000684

AC:

AN:

1461550

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727090

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53136

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000809

AC:

AN:

1111980

Other (OTH)

AF:

0.00

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151960

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74260

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41462

American (AMR)

AF:

0.0000655

AC:

AN:

15256

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5122

South Asian (SAS)

AF:

0.00

AC:

AN:

4802

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67946

Other (OTH)

AF:

0.00

AC:

AN:

2104

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00190

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

May 04, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.785G>A (p.R262H) alteration is located in exon 9 (coding exon 9) of the STX1A gene. This alteration results from a G to A substitution at nucleotide position 785, causing the arginine (R) at amino acid position 262 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Mar 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.69

BayesDel_addAF

Benign

-0.029

BayesDel_noAF

Benign

-0.19

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.27

M_CAP

Uncertain

0.096

MetaRNN

Benign

0.17

MetaSVM

Benign

-0.37

PhyloP100

7.6

PROVEAN

Benign

-0.68

REVEL

Benign

0.041

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.021

Polyphen

0.19

Vest4

0.49

MVP

0.74

ClinPred

0.99

GERP RS

3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.61

Mutation Taster

=30/70

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

7-73700734-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over