rs139643725

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP2BS2

The NM_182961.4(SYNE1):c.24488T>C(p.Ile8163Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00024 in 1,614,124 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00042 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00022 ( 0 hom. )

Consequence

SYNE1
NM_182961.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:8

Conservation

PhyloP100: 9.10

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 Likely_benign. Variant got -3 ACMG points.

PP2

Missense variant where missense usually causes diseases, SYNE1

BS2

High AC in GnomAd at 64 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYNE1	NM_182961.4 linkuse as main transcript	c.24488T>C	p.Ile8163Thr	missense_variant	136/146	ENST00000367255.10
SYNE1	NM_001347702.2 linkuse as main transcript	c.953T>C	p.Ile318Thr	missense_variant	7/18	ENST00000354674.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYNE1	ENST00000367255.10 linkuse as main transcript	c.24488T>C	p.Ile8163Thr	missense_variant	136/146	1	NM_182961.4	P1	Q8NF91-1
SYNE1	ENST00000354674.5 linkuse as main transcript	c.953T>C	p.Ile318Thr	missense_variant	7/18	5	NM_001347702.2

Frequencies

GnomAD3 genomes

AF:

0.000421

AC:

AN:

152120

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000990

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000851

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:

0.000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000183

AC:

AN:

251462

Hom.:

AF XY:

0.000132

AC XY:

AN XY:

135906

show subpopulations

Gnomad AFR exome

AF:

0.000800

Gnomad AMR exome

AF:

0.000260

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000185

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000221

AC:

323

AN:

1461886

Hom.:

Cov.:

AF XY:

0.000187

AC XY:

136

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.000687

Gnomad4 AMR exome

AF:

0.000402

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000241

Gnomad4 OTH exome

AF:

0.000199

GnomAD4 genome

AF:

0.000420

AC:

AN:

152238

Hom.:

Cov.:

AF XY:

0.000417

AC XY:

AN XY:

74426

show subpopulations

Gnomad4 AFR

AF:

0.000987

Gnomad4 AMR

AF:

0.000850

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000209

Hom.:

Bravo

AF:

0.000597

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000181

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:5

Uncertain significance, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	May 01, 2022	SYNE1: PM2 -
Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Dec 18, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jan 24, 2018	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Athena Diagnostics	Apr 05, 2022	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Jan 06, 2020	In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Sep 23, 2021

The sequence change, c.24275T>C, in exon 135 results in an amino acid change, p.Ile8092Thr. This sequence change does not appear to have been previously described in individuals with SYNE1-related disorders. This sequence change has been described in the gnomAD database with a frequency of 0.096% in the African subpopulation (dbSNP rs139643725). The p.Ile8092Thr change affects a moderately conserved amino acid residue located in a domain of the SYNE1 protein that is not known to be functional. In-silico pathogenicity prediction tools (SIFT, PolyPhen2, Align GVGD, REVEL) provide contradictory results for the p.Ile8092Thr substitution. Due to insufficient evidence and the lack of functional studies, the clinical significance of the p.Ile8092Thr change remains unknown at this time. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 08, 2021

The c.24275T>C (p.I8092T) alteration is located in exon 135 (coding exon 134) of the SYNE1 gene. This alteration results from a T to C substitution at nucleotide position 24275, causing the isoleucine (I) at amino acid position 8092 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

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

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Oct 04, 2022

This sequence change replaces isoleucine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 8092 of the SYNE1 protein (p.Ile8092Thr). This variant is present in population databases (rs139643725, gnomAD 0.1%). 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: 500312). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.021

BayesDel_noAF

Pathogenic

0.16

Cadd

Uncertain

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.52

D;.;.;T;T;T;T

Eigen

Pathogenic

0.81

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.93

D;D;D;D;D;D;D

M_CAP

Benign

0.045

MetaRNN

Uncertain

0.47

T;T;T;T;T;T;T

MetaSVM

Benign

-0.57

MutationAssessor

Uncertain

2.2

M;.;.;.;.;.;.

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D

PrimateAI

Uncertain

0.68

PROVEAN

Pathogenic

-4.7

D;D;D;D;D;D;D

REVEL

Uncertain

0.58

Sift

Uncertain

0.0010

D;T;D;D;D;D;D

Sift4G

Uncertain

0.0020

D;D;D;D;D;D;D

Polyphen

1.0

D;.;.;.;.;.;.

Vest4

0.90

MVP

0.78

MPC

0.38

ClinPred

0.16

GERP RS

5.9

Varity_R

0.61

gMVP

0.51

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