6-152358384-G-T

Variant names:

• chr6-152358384-G-T
• rs776816480
• NM_182961.4:c.10597C>A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4 BS2_Supporting

The NM_182961.4(SYNE1):​c.10597C>A​(p.Arg3533Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000889 in 1,461,844 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R3533H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000089 (0 hom.)
• Consequence: SYNE1 NM_182961.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 4.05

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]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.28505242).
• BS2: High AC in GnomAdExome4 at 13 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SYNE1	NM_182961.4	c.10597C>A	p.Arg3533Ser	missense_variant	Exon 66 of 146	ENST00000367255.10	NP_892006.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SYNE1	ENST00000367255.10	c.10597C>A	p.Arg3533Ser	missense_variant	Exon 66 of 146	1	NM_182961.4	ENSP00000356224.5
SYNE1	ENST00000423061.6	c.10618C>A	p.Arg3540Ser	missense_variant	Exon 66 of 146	1		ENSP00000396024.1
SYNE1	ENST00000471834.1	n.3735C>A		non_coding_transcript_exon_variant	Exon 9 of 19	1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000159 AC: 4 AN: 251466 Hom.: 0 AF XY: 0.0000221 AC XY: 3 AN XY: 135906

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 0.0000352

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000889 AC: 13 AN: 1461844 Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5 AN XY: 727222

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.0000108

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ExAC AF: 0.0000165 AC: 2

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Autosomal recessive ataxia, Beauce type;C2751807:Emery-Dreifuss muscular dystrophy 4, autosomal dominant Uncertain:1

Oct 23, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with serine, which is neutral and polar, at codon 3540 of the SYNE1 protein (p.Arg3540Ser). This variant is present in population databases (rs776816480, gnomAD 0.004%). 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: 470990). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. 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. -

not provided Uncertain:1

Sep 05, 2017

Athena Diagnostics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.26
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.41
CADD	Benign	16
DANN	Benign	0.96
DEOGEN2	Benign	0.21	T;.;T
Eigen	Benign	-0.038
Eigen_PC	Benign	0.020
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.29	T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.0	M;.;.
PrimateAI	Benign	0.24	T
PROVEAN	Benign	-1.4	N;.;N
REVEL	Benign	0.064
Sift	Uncertain	0.0070	D;.;D
Sift4G	Uncertain	0.0050	D;D;D
Polyphen		0.61	P;.;.
Vest4		0.39
MutPred		0.42		Gain of disorder (P = 0.0635);.;.;
MVP		0.52
MPC		0.22
ClinPred		0.32	T
GERP RS		3.5
Varity_R		0.15
gMVP		0.11

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs776816480; hg19: chr6-152679519;