rs762347655

chr14-63998968-G-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_Moderate BS1_Supporting BS2

The NM_182914.3(SYNE2):c.3408G>T(p.Arg1136Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000372 in 1,613,814 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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. R1136M) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000039 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000037 (0 hom.)
• Consequence: SYNE2 NM_182914.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.0940

Genes affected

SYNE2 (HGNC:17084): (spectrin repeat containing nuclear envelope protein 2) The protein encoded by this gene is a nuclear outer membrane protein that binds cytoplasmic F-actin. This binding tethers the nucleus to the cytoskeleton and aids in the maintenance of the structural integrity of the nucleus. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]

ACMG classification

Verdict is Benign. Variant got -7 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.08686033).
• BS1: Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.0000394 (6/152162) while in subpopulation AMR AF= 0.0000655 (1/15272). AF 95% confidence interval is 0.0000197. There are 0 homozygotes in gnomad4. There are 1 alleles in male gnomad4 subpopulation. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SYNE2	NM_182914.3	c.3408G>T	p.Arg1136Ser	missense_variant	27/116	ENST00000555002.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SYNE2	ENST00000555002.6	c.3408G>T	p.Arg1136Ser	missense_variant	27/116	1	NM_182914.3	P4

Frequencies

GnomAD3 genomes AF: 0.0000394 AC: 6 AN: 152162 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

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: 0.0000588

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.0000441 AC: 11 AN: 249260 Hom.: 0 AF XY: 0.0000518 AC XY: 7 AN XY: 135224

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000174

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000556

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000177

Gnomad OTH exome AF: 0.000331

GnomAD4 exome AF: 0.0000369 AC: 54 AN: 1461652 Hom.: 0 Cov.: 31 AF XY: 0.0000371 AC XY: 27 AN XY: 727146

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000268

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000315

Gnomad4 OTH exome AF: 0.0000828

GnomAD4 genome AF: 0.0000394 AC: 6 AN: 152162 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74332

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000655

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000588

Gnomad4 OTH AF: 0.000478

Alfa AF: 0.0000434 Hom.: 0

Bravo AF: 0.0000416

TwinsUK AF: 0.00 AC: 0

ALSPAC AF: 0.000259 AC: 1

ExAC AF: 0.0000414 AC: 5

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Sep 17, 2015

- -

Emery-Dreifuss muscular dystrophy 5, autosomal dominant Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Dec 22, 2023

This sequence change replaces arginine, which is basic and polar, with serine, which is neutral and polar, at codon 1136 of the SYNE2 protein (p.Arg1136Ser). This variant is present in population databases (rs762347655, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with SYNE2-related conditions. ClinVar contains an entry for this variant (Variation ID: 283167). 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.30
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.28
Cadd	Benign	15
Dann	Benign	0.53
Eigen	Benign	-1.0
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.088	N
LIST_S2	Benign	0.74	T;T;T;T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.087	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.5	L;.;L;.
MutationTaster	Benign	1.0	N;N;N;N
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-1.9	N;.;N;N
REVEL	Benign	0.13
Sift	Uncertain	0.0060	D;.;D;D
Sift4G	Uncertain	0.013	D;D;D;D
Polyphen		0.077	B;.;B;.
Vest4		0.28
MutPred		0.34		Gain of ubiquitination at K1134 (P = 0.0418);Gain of ubiquitination at K1134 (P = 0.0418);Gain of ubiquitination at K1134 (P = 0.0418);Gain of ubiquitination at K1134 (P = 0.0418);
MVP		0.22
MPC		0.071
ClinPred		0.041	T
GERP RS		-3.3
Varity_R		0.14
gMVP		0.14

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.11		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

Other links and lift over

dbSNP: rs762347655; hg19: chr14-64465686;