rs141925310

Positions:

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_006950.3(SYN1):c.1110C>T(p.Cys370=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000185 in 1,202,995 control chromosomes in the GnomAD database, including 1 homozygotes. There are 52 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00095 ( 1 hom., 23 hem., cov: 23)

Exomes 𝑓: 0.00011 ( 0 hom. 29 hem. )

Consequence

SYN1
NM_006950.3 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -0.976

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 -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.74).

BP6

Variant X-47576179-G-A is Benign according to our data. Variant chrX-47576179-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 207463.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.976 with no splicing effect.

BS2

High Hemizygotes in GnomAd4 at 23 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SYN1	NM_006950.3 linkuse as main transcript	c.1110C>T	p.Cys370=	synonymous_variant	9/13	ENST00000295987.13	NP_008881.2
SYN1	NM_133499.2 linkuse as main transcript	c.1110C>T	p.Cys370=	synonymous_variant	9/13		NP_598006.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SYN1	ENST00000295987.13 linkuse as main transcript	c.1110C>T	p.Cys370=	synonymous_variant	9/13	2	NM_006950.3	ENSP00000295987	P3	P17600-1
SYN1	ENST00000340666.5 linkuse as main transcript	c.1110C>T	p.Cys370=	synonymous_variant	9/13	1		ENSP00000343206	A1	P17600-2

Frequencies

GnomAD3 genomes

AF:

0.000939

AC:

105

AN:

111866

Hom.:

Cov.:

AF XY:

0.000646

AC XY:

AN XY:

34048

show subpopulations

Gnomad AFR

AF:

0.00326

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000377

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:

0.0000188

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000345

AC:

AN:

165446

Hom.:

AF XY:

0.000150

AC XY:

AN XY:

53314

show subpopulations

Gnomad AFR exome

AF:

0.00448

Gnomad AMR exome

AF:

0.000115

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:

0.0000138

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000106

AC:

116

AN:

1091076

Hom.:

Cov.:

AF XY:

0.0000810

AC XY:

AN XY:

357830

show subpopulations

Gnomad4 AFR exome

AF:

0.00362

Gnomad4 AMR exome

AF:

0.000116

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:

0.0000107

Gnomad4 OTH exome

AF:

0.000153

GnomAD4 genome

AF:

0.000947

AC:

106

AN:

111919

Hom.:

Cov.:

AF XY:

0.000674

AC XY:

AN XY:

34111

show subpopulations

Gnomad4 AFR

AF:

0.00328

Gnomad4 AMR

AF:

0.000376

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000188

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000564

Hom.:

Bravo

AF:

0.000971

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 14, 2014	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Likely benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Dec 14, 2015	- -

Inborn genetic diseases

Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 29, 2017

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

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

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 13, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.74

CADD

Benign

0.033

DANN

Benign

0.76

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