chr14-64134072-T-C

Variant names:

• chr14-64134072-T-C
• rs148323208
• NM_182914.3:c.14518T>C

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP6 BS1 BS2

The NM_182914.3(SYNE2):​c.14518T>C​(p.Trp4840Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000489 in 1,614,030 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00014 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000040 (0 hom.)
• Consequence: SYNE2 NM_182914.3 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:1
• Conservation: PhyloP100: 7.40

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]

ESR2 (HGNC:3468): (estrogen receptor 2) This gene encodes a member of the family of estrogen receptors and superfamily of nuclear receptor transcription factors. The gene product contains an N-terminal DNA binding domain and C-terminal ligand binding domain and is localized to the nucleus, cytoplasm, and mitochondria. Upon binding to 17beta-estradiol or related ligands, the encoded protein forms homo- or hetero-dimers that interact with specific DNA sequences to activate transcription. Some isoforms dominantly inhibit the activity of other estrogen receptor family members. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some of these variants has not been fully characterized. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -9 ACMG points.

• BP6: Variant 14-64134072-T-C is Benign according to our data. Variant chr14-64134072-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 569670.We mark this variant Likely_benign, oryginal submissions are: {Benign=1, Uncertain_significance=1}.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000138 (21/152298) while in subpopulation AFR AF= 0.000481 (20/41568). AF 95% confidence interval is 0.000319. There are 0 homozygotes in gnomad4. There are 10 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 21 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SYNE2	NM_182914.3	c.14518T>C	p.Trp4840Arg	missense_variant	Exon 78 of 116	ENST00000555002.6	NP_878918.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SYNE2	ENST00000555002.6	c.14518T>C	p.Trp4840Arg	missense_variant	Exon 78 of 116	1	NM_182914.3	ENSP00000450831.2

Frequencies

GnomAD3 genomes AF: 0.000138 AC: 21 AN: 152180 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000677 AC: 17 AN: 251238 Hom.: 0 AF XY: 0.0000663 AC XY: 9 AN XY: 135784

Gnomad AFR exome AF: 0.000677

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: 0.000327

GnomAD4 exome AF: 0.0000397 AC: 58 AN: 1461732 Hom.: 0 Cov.: 32 AF XY: 0.0000413 AC XY: 30 AN XY: 727170

Gnomad4 AFR exome AF: 0.000388

Gnomad4 AMR exome AF: 0.0000447

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: 0.0000252

Gnomad4 OTH exome AF: 0.000199

GnomAD4 genome AF: 0.000138 AC: 21 AN: 152298 Hom.: 0 Cov.: 32 AF XY: 0.000134 AC XY: 10 AN XY: 74468

Gnomad4 AFR AF: 0.000481

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000987 Hom.: 0

Bravo AF: 0.000125

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.0000576 AC: 7

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

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

Dec 27, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces tryptophan, which is neutral and slightly polar, with arginine, which is basic and polar, at codon 4840 of the SYNE2 protein (p.Trp4840Arg). This variant is present in population databases (rs148323208, gnomAD 0.06%), and has an allele count higher than expected for a pathogenic variant. 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: 569670). 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 disruptive. 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. -

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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	Pathogenic	0.97
BayesDel_addAF	Uncertain	0.10	D
BayesDel_noAF	Pathogenic	0.27
CADD	Uncertain	24
DANN	Benign	0.97
DEOGEN2	Benign	0.31	.;T;T;T;T
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.84	T;T;T;T;T
M_CAP	Uncertain	0.12	D
MetaRNN	Uncertain	0.45	T;T;T;T;T
MetaSVM	Uncertain	-0.12	T
MutationAssessor	Uncertain	2.7	M;.;M;.;.
PrimateAI	Uncertain	0.73	T
PROVEAN	Pathogenic	-13	D;.;D;D;D
REVEL	Uncertain	0.49
Sift	Pathogenic	0.0	D;.;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D;D
Polyphen		1.0	D;.;D;.;.
Vest4		0.87
MutPred		0.69		Gain of disorder (P = 0.0017);.;Gain of disorder (P = 0.0017);.;.;
MVP		0.82
MPC		0.41
ClinPred		0.49	T
GERP RS		6.0
Varity_R		0.83
gMVP		0.66

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		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: rs148323208; hg19: chr14-64600790;