6-152230593-C-T

Position:

chr6-152230593-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 1P and 9B. PP2BP4_StrongBP6BS2

The NM_182961.4(SYNE1):c.21149G>A(p.Arg7050Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000295 in 1,614,066 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00029 ( 0 hom. )

Consequence

SYNE1
NM_182961.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:8B:2

Conservation

PhyloP100: 0.0380

Variant links:

Genes affected

SYNE1 (HGNC:17089): (spectrin repeat containing nuclear envelope protein 1) This gene encodes a spectrin repeat containing protein expressed in skeletal and smooth muscle, and peripheral blood lymphocytes, that localizes to the nuclear membrane. Mutations in this gene have been associated with autosomal recessive spinocerebellar ataxia 8, also referred to as autosomal recessive cerebellar ataxia type 1 or recessive ataxia of Beauce. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

SYNE1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SYNE1. . Gene score misZ -0.29069 (greater than the threshold 3.09). Trascript score misZ 3.2909 (greater than threshold 3.09). GenCC has associacion of gene with autosomal recessive ataxia, Beauce type, autosomal recessive myogenic arthrogryposis multiplex congenita, Emery-Dreifuss muscular dystrophy 4, autosomal dominant, arthrogryposis multiplex congenita 3, myogenic type, autosomal dominant Emery-Dreifuss muscular dystrophy.

BP4

Computational evidence support a benign effect (MetaRNN=0.015934825).

BP6

Variant 6-152230593-C-T is Benign according to our data. Variant chr6-152230593-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 287711.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=8, Benign=1}. Variant chr6-152230593-C-T is described in Lovd as [Likely_benign].

BS2

High AC in GnomAd4 at 59 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYNE1	NM_182961.4 linkuse as main transcript	c.21149G>A	p.Arg7050Gln	missense_variant	115/146	ENST00000367255.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYNE1	ENST00000367255.10 linkuse as main transcript	c.21149G>A	p.Arg7050Gln	missense_variant	115/146	1	NM_182961.4	P1	Q8NF91-1
SYNE1	ENST00000423061.6 linkuse as main transcript	c.20936G>A	p.Arg6979Gln	missense_variant	114/146	1
SYNE1	ENST00000367256.9 linkuse as main transcript	n.4841G>A		non_coding_transcript_exon_variant	30/61	1
SYNE1	ENST00000409694.6 linkuse as main transcript	n.4733G>A		non_coding_transcript_exon_variant	28/59	1

Frequencies

GnomAD3 genomes

AF:

0.000388

AC:

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00177

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:

0.000412

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000235

AC:

AN:

251354

Hom.:

AF XY:

0.000236

AC XY:

AN XY:

135858

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000924

Gnomad NFE exome

AF:

0.000361

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.000285

AC:

417

AN:

1461802

Hom.:

Cov.:

AF XY:

0.000264

AC XY:

192

AN XY:

727204

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.000380

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.000243

Gnomad4 NFE exome

AF:

0.000326

Gnomad4 OTH exome

AF:

0.000282

GnomAD4 genome

AF:

0.000387

AC:

AN:

152264

Hom.:

Cov.:

AF XY:

0.000349

AC XY:

AN XY:

74450

show subpopulations

Gnomad4 AFR

AF:

0.0000963

Gnomad4 AMR

AF:

0.00177

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000412

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000357

Hom.:

Bravo

AF:

0.000502

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000255

AC:

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.000327

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:8Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:5

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Feb 18, 2021	In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jan 25, 2017	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jan 04, 2023	Available data are insufficient to determine the clinical significance of the variant at this time. The frequency of this variant in the general population is higher than would generally be expected for pathogenic variants in this gene (http://gnomad.broadinstitute.org). Computational tools predict that this variant is not damaging. -
Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Nov 23, 2020	- -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2021	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Jan 08, 2024

Variant summary: SYNE1 c.20936G>A (p.Arg6979Gln) results in a conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00023 in 251354 control chromosomes. To our knowledge, no occurrence of c.20936G>A in individuals affected with SYNE1-Related Disorders and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 287711. VUS, n=7; Benign, n=1). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Autosomal recessive ataxia, Beauce type;C2751807:Emery-Dreifuss muscular dystrophy 4, autosomal dominant

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 03, 2022

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 6979 of the SYNE1 protein (p.Arg6979Gln). This variant is present in population databases (rs143639400, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with SYNE1-related conditions. ClinVar contains an entry for this variant (Variation ID: 287711). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The glutamine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -

Autosomal recessive ataxia, Beauce type

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 30, 2021

This alteration is classified as likely 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. -

Emery-Dreifuss muscular dystrophy 4, autosomal dominant

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.064

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.74

CADD

Benign

3.9

DANN

Benign

0.97

DEOGEN2

Benign

0.21

T;.;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.077

LIST_S2

Uncertain

0.88

D;D;D

M_CAP

Benign

0.016

MetaRNN

Benign

0.016

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.14

N;.;.

MutationTaster

Benign

1.0

N;N;N;N;N;N

PrimateAI

Benign

0.19

PROVEAN

Benign

-2.1

N;.;N

REVEL

Benign

0.026

Sift

Benign

0.038

D;.;D

Sift4G

Uncertain

0.059

T;T;T

Polyphen

0.28

B;.;.

Vest4

0.13

MVP

0.12

MPC

0.15

ClinPred

0.022

GERP RS

-3.7

Varity_R

0.051

gMVP

0.11

Splicing

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