rs121908490

Positions:

chr7-94628288-G-A

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_003919.3(SGCE):c.304C>T(p.Arg102Ter) variant causes a stop gained change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,611,212 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SGCE
NM_003919.3 stop_gained

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:9

Conservation

PhyloP100: 9.42

Variant links:

Genes affected

SGCE (HGNC:10808): (sarcoglycan epsilon) This gene encodes the epsilon member of the sarcoglycan family. Sarcoglycans are transmembrane proteins that are components of the dystrophin-glycoprotein complex, which link the actin cytoskeleton to the extracellular matrix. Unlike other family members which are predominantly expressed in striated muscle, the epsilon sarcoglycan is more broadly expressed. Mutations in this gene are associated with myoclonus-dystonia syndrome. This gene is imprinted, with preferential expression from the paternal allele. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. A pseudogene associated with this gene is located on chromosome 2. [provided by RefSeq, Oct 2016]

SGCE links:

CASD1 (HGNC:):

CASD1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 7-94628288-G-A is Pathogenic according to our data. Variant chr7-94628288-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 5769.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr7-94628288-G-A is described in Lovd as [Pathogenic]. Variant chr7-94628288-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SGCE	NM_003919.3 linkuse as main transcript	c.304C>T	p.Arg102Ter	stop_gained	3/11	ENST00000648936.2	NP_003910.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SGCE	ENST00000648936.2 linkuse as main transcript	c.304C>T	p.Arg102Ter	stop_gained	3/11		NM_003919.3	ENSP00000497130	A1	O43556-1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151738

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000484

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1459474

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726024

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

9.01e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151738

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74078

show subpopulations

Gnomad4 AFR

AF:

0.0000484

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:5

Pathogenic, criteria provided, single submitter	clinical testing	Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen	Feb 01, 2021	- -
Pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Aug 01, 2020	- -
Pathogenic, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jan 29, 2015	- -
Pathogenic, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jul 28, 2021	This variant is expected to result in the loss of a functional protein. This variant has not been reported in large, multi-ethnic general populations (http://gnomad.broadinstitute.org). This variant appears to segregate with disease in at least one family. -
Pathogenic, criteria provided, single submitter	clinical testing	GeneDx	Jan 03, 2024	Published functional studies demonstrate a damaging effect and show that this variant interferes with SGCE gene expression (PMID: 28155872); Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 25525159, 11528394, 12874409, 31440721, 36161439, 17853490, 22363319, 31338059, 34906973, 33022436, 35995778, 33808167, 18205193, 28155872) -

Myoclonic dystonia 11

Pathogenic:3

Pathogenic, no assertion criteria provided	literature only	OMIM	Jul 22, 2003	- -
Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Jul 22, 2019	This variant was determined to be pathogenic according to ACMG Guidelines, 2015 [PMID:25741868]. -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 24, 2023	This sequence change creates a premature translational stop signal (p.Arg102*) in the SGCE gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in SGCE are known to be pathogenic (PMID: 12821748, 15389977, 17853490, 24297365). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with myoclonus‚Äìdystonia (PMID: 11528394, 12874409, 18205193). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 5769). For these reasons, this variant has been classified as Pathogenic. -

SGCE-related disorder

Pathogenic:1

Pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Nov 14, 2023

The SGCE c.304C>T variant is predicted to result in premature protein termination (p.Arg102*). This variant has been documented to be causative for myoclonus-dystonia syndrome (Zimprich et al. 2001. PubMed ID: 11528394). This variant has not been reported in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. In ClinVar, this variant has been interpreted as pathogenic by multiple submitters (https://www.ncbi.nlm.nih.gov/clinvar/variation/5769/). Nonsense variants in SGCE are expected to be pathogenic. This variant is interpreted as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Pathogenic

0.65

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.93

FATHMM_MKL

Pathogenic

0.99

MutationTaster

Benign

1.0

A;A;A;A;A;A

Vest4

0.91, 0.91, 0.79, 0.79, 0.80, 0.82

GERP RS

5.5

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

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