X-47619577-G-C

Position:

chrX-47619577-G-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_006950.3(SYN1):c.152C>G(p.Ala51Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00227 in 1,165,532 control chromosomes in the GnomAD database, including 42 homozygotes. There are 670 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.012 ( 26 hom., 356 hem., cov: 22)

Exomes 𝑓: 0.0012 ( 16 hom. 314 hem. )

Consequence

SYN1
NM_006950.3 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 2.64

Variant links:

Genes affected

SYN1 (HGNC:11494): (synapsin I) This gene is a member of the synapsin gene family. Synapsins encode neuronal phosphoproteins which associate with the cytoplasmic surface of synaptic vesicles. Family members are characterized by common protein domains, and they are implicated in synaptogenesis and the modulation of neurotransmitter release, suggesting a potential role in several neuropsychiatric diseases. This member of the synapsin family plays a role in regulation of axonogenesis and synaptogenesis. The protein encoded serves as a substrate for several different protein kinases and phosphorylation may function in the regulation of this protein in the nerve terminal. Mutations in this gene may be associated with X-linked disorders with primary neuronal degeneration such as Rett syndrome. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]

SYN1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0026123822).

BP6

Variant X-47619577-G-C is Benign according to our data. Variant chrX-47619577-G-C is described in ClinVar as [Benign]. Clinvar id is 139384.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chrX-47619577-G-C is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0122 (1361/111764) while in subpopulation AFR AF= 0.0423 (1302/30808). AF 95% confidence interval is 0.0404. There are 26 homozygotes in gnomad4. There are 356 alleles in male gnomad4 subpopulation. Median coverage is 22. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 26 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYN1	NM_006950.3 linkuse as main transcript	c.152C>G	p.Ala51Gly	missense_variant	1/13	ENST00000295987.13
SYN1	NM_133499.2 linkuse as main transcript	c.152C>G	p.Ala51Gly	missense_variant	1/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYN1	ENST00000295987.13 linkuse as main transcript	c.152C>G	p.Ala51Gly	missense_variant	1/13	2	NM_006950.3	P3	P17600-1
SYN1	ENST00000340666.5 linkuse as main transcript	c.152C>G	p.Ala51Gly	missense_variant	1/13	1		A1	P17600-2

Frequencies

GnomAD3 genomes

AF:

0.0122

AC:

1359

AN:

111715

Hom.:

Cov.:

AF XY:

0.0105

AC XY:

356

AN XY:

33951

show subpopulations

Gnomad AFR

AF:

0.0423

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00297

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000745

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0128

Gnomad NFE

AF:

0.000265

Gnomad OTH

AF:

0.00469

GnomAD3 exomes

AF:

0.00260

AC:

274

AN:

105205

Hom.:

AF XY:

0.00120

AC XY:

AN XY:

31795

show subpopulations

Gnomad AFR exome

AF:

0.0512

Gnomad AMR exome

AF:

0.00132

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000764

Gnomad OTH exome

AF:

0.000677

GnomAD4 exome

AF:

0.00121

AC:

1280

AN:

1053768

Hom.:

Cov.:

AF XY:

0.000927

AC XY:

314

AN XY:

338668

show subpopulations

Gnomad4 AFR exome

AF:

0.0450

Gnomad4 AMR exome

AF:

0.00161

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000403

Gnomad4 OTH exome

AF:

0.00213

GnomAD4 genome

AF:

0.0122

AC:

1361

AN:

111764

Hom.:

Cov.:

AF XY:

0.0105

AC XY:

356

AN XY:

34010

show subpopulations

Gnomad4 AFR

AF:

0.0423

Gnomad4 AMR

AF:

0.00297

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00112

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000265

Gnomad4 OTH

AF:

0.00464

Alfa

AF:

0.00705

Hom.:

Bravo

AF:

0.0138

ESP6500AA

AF:

0.0176

AC:

ESP6500EA

AF:

0.000219

AC:

ExAC

AF:

0.00250

AC:

250

ClinVar

Significance: Benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Jun 15, 2017	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Apr 16, 2018	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 09, 2018	This variant is associated with the following publications: (PMID: 23871722, 21441247, 27884173) -

Epilepsy, X-linked 1, with variable learning disabilities and behavior disorders

Benign:2

Benign, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 24, 2024	- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Jul 19, 2016

- -

History of neurodevelopmental disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 08, 2016

General population or subpopulation frequency is too high to be a pathogenic mutation based on disease/syndrome prevalence and penetrance;In silico models in agreement (benign);In silico models in agreement (deleterious) and/or completely conserved position in appropriate species;Subpopulation frequency in support of benign classification -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.76

BayesDel_noAF

Benign

-0.83

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.22

T;.

FATHMM_MKL

Benign

0.46

LIST_S2

Benign

0.63

T;T

MetaRNN

Benign

0.0026

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.55

N;N

MutationTaster

Benign

0.92

P;P

PrimateAI

Uncertain

0.79

PROVEAN

Benign

-0.61

N;N

REVEL

Benign

0.051

Sift

Benign

0.28

T;T

Sift4G

Benign

0.34

T;T

Polyphen

0.0010

B;B

Vest4

0.66

MVP

0.34

MPC

0.80

ClinPred

0.0041

GERP RS

3.1

Varity_R

0.096

gMVP

0.35

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

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