rs141858284

Variant summary

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

The NM_182961.4(SYNE1):c.6521C>T(p.Thr2174Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00149 in 1,614,044 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T2174T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0011 ( 2 hom., cov: 32)

Exomes 𝑓: 0.0015 ( 3 hom. )

Consequence

SYNE1
NM_182961.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:6

Conservation

PhyloP100: 1.18

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 where missense usually causes diseases, SYNE1

BP4

Computational evidence support a benign effect (MetaRNN=0.009655803).

BP6

Variant 6-152409087-G-A is Benign according to our data. Variant chr6-152409087-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 283439.We mark this variant Likely_benign, oryginal submissions are: {Benign=2, Likely_benign=4, Uncertain_significance=2}.

BS2

High AC in GnomAd at 174 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYNE1	NM_182961.4 linkuse as main transcript	c.6521C>T	p.Thr2174Ile	missense_variant	44/146	ENST00000367255.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYNE1	ENST00000367255.10 linkuse as main transcript	c.6521C>T	p.Thr2174Ile	missense_variant	44/146	1	NM_182961.4	P1	Q8NF91-1
SYNE1	ENST00000423061.6 linkuse as main transcript	c.6542C>T	p.Thr2181Ile	missense_variant	44/146	1
SYNE1	ENST00000461872.6 linkuse as main transcript	n.6739C>T		non_coding_transcript_exon_variant	42/55	1
SYNE1	ENST00000535081.1 linkuse as main transcript	n.218C>T		non_coding_transcript_exon_variant	1/4	2

Frequencies

GnomAD3 genomes

AF:

0.00114

AC:

174

AN:

152108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000314

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00164

Gnomad ASJ

AF:

0.00461

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00104

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00159

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.00126

AC:

318

AN:

251420

Hom.:

AF XY:

0.00120

AC XY:

163

AN XY:

135880

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.00197

Gnomad ASJ exome

AF:

0.00417

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00162

Gnomad NFE exome

AF:

0.00134

Gnomad OTH exome

AF:

0.00261

GnomAD4 exome

AF:

0.00152

AC:

2227

AN:

1461818

Hom.:

Cov.:

AF XY:

0.00147

AC XY:

1072

AN XY:

727212

show subpopulations

Gnomad4 AFR exome

AF:

0.000239

Gnomad4 AMR exome

AF:

0.00210

Gnomad4 ASJ exome

AF:

0.00421

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00198

Gnomad4 NFE exome

AF:

0.00161

Gnomad4 OTH exome

AF:

0.00200

GnomAD4 genome

AF:

0.00114

AC:

174

AN:

152226

Hom.:

Cov.:

AF XY:

0.000887

AC XY:

AN XY:

74418

show subpopulations

Gnomad4 AFR

AF:

0.000313

Gnomad4 AMR

AF:

0.00164

Gnomad4 ASJ

AF:

0.00461

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00104

Gnomad4 NFE

AF:

0.00159

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.00154

Hom.:

Bravo

AF:

0.00139

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00104

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.000930

AC:

ExAC

AF:

0.00114

AC:

139

EpiCase

AF:

0.00120

EpiControl

AF:

0.00136

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:6

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:2

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Nov 19, 2018	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	May 16, 2022	See Variant Classification Assertion Criteria. -
Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2018	- -

Autosomal recessive ataxia, Beauce type

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 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. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Jan 08, 2017

- -

SYNE1-related condition

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Feb 19, 2023

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

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

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 21, 2024

- -

Emery-Dreifuss muscular dystrophy 4, autosomal dominant

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 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

0.12

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-0.57

Cadd

Benign

Dann

Benign

0.93

DEOGEN2

Benign

0.071

T;.;T

Eigen

Benign

-0.42

Eigen_PC

Benign

-0.31

FATHMM_MKL

Benign

0.15

LIST_S2

Benign

0.80

T;T;T

M_CAP

Benign

0.0069

MetaRNN

Benign

0.0097

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.7

M;.;.

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.36

PROVEAN

Benign

0.46

N;.;N

REVEL

Benign

0.086

Sift

Benign

1.0

T;.;T

Sift4G

Benign

0.79

T;T;T

Polyphen

0.0010

B;.;.

Vest4

0.35

MVP

0.43

MPC

0.14

ClinPred

0.046

GERP RS

4.7

Varity_R

0.095

gMVP

0.12

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