1-25800272-C-T

Position:

chr1-25800272-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_020451.3(SELENON):c.42C>T(p.Pro14=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00465 in 971,178 control chromosomes in the GnomAD database, including 160 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.021 ( 105 hom., cov: 30)

Exomes 𝑓: 0.0017 ( 55 hom. )

Consequence

SELENON
NM_020451.3 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.588

Variant links:

Genes affected

SELENON (HGNC:15999): (selenoprotein N) This gene encodes a glycoprotein that is localized in the endoplasmic reticulum. It plays an important role in cell protection against oxidative stress, and in the regulation of redox-related calcium homeostasis. Mutations in this gene are associated with early onset muscle disorders, referred to as SEPN1-related myopathy. SEPN1-related myopathy consists of 4 autosomal recessive disorders, originally thought to be separate entities: rigid spine muscular dystrophy (RSMD1), the classical form of multiminicore disease, desmin related myopathy with Mallory-body like inclusions, and congenital fiber-type disproportion (CFTD). This protein is a selenoprotein, containing the rare amino acid selenocysteine (Sec). Sec is encoded by the UGA codon, which normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. A second stop-codon redefinition element (SRE) adjacent to the UGA codon has been identified in this gene (PMID:15791204). SRE is a phylogenetically conserved stem-loop structure that stimulates readthrough at the UGA codon, and augments the Sec insertion efficiency by SECIS. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Dec 2016]

SELENON links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.51).

BP6

Variant 1-25800272-C-T is Benign according to our data. Variant chr1-25800272-C-T is described in ClinVar as [Benign]. Clinvar id is 95964.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.588 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0698 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SELENON	NM_020451.3 linkuse as main transcript	c.42C>T	p.Pro14=	synonymous_variant	1/13	ENST00000361547.7
SELENON	NM_206926.2 linkuse as main transcript	c.42C>T	p.Pro14=	synonymous_variant	1/12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SELENON	ENST00000361547.7 linkuse as main transcript	c.42C>T	p.Pro14=	synonymous_variant	1/13	1	NM_020451.3		Q9NZV5-1
SELENON	ENST00000374315.1 linkuse as main transcript	c.42C>T	p.Pro14=	synonymous_variant	1/12	5		P1	Q9NZV5-2
SELENON	ENST00000354177.9 linkuse as main transcript	c.42C>T	p.Pro14=	synonymous_variant	1/12	5
SELENON	ENST00000494537.2 linkuse as main transcript	c.42C>T	p.Pro14=	synonymous_variant, NMD_transcript_variant	1/13	3

Frequencies

GnomAD3 genomes

AF:

0.0212

AC:

3095

AN:

146024

Hom.:

106

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0720

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00727

Gnomad ASJ

AF:

0.00324

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00974

Gnomad NFE

AF:

0.000274

Gnomad OTH

AF:

0.0114

GnomAD3 exomes

AF:

0.00433

AC:

AN:

2542

Hom.:

AF XY:

0.00633

AC XY:

AN XY:

1422

show subpopulations

Gnomad AFR exome

AF:

0.0652

Gnomad AMR exome

AF:

0.00654

Gnomad ASJ exome

AF:

0.00365

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00171

AC:

1413

AN:

825096

Hom.:

Cov.:

AF XY:

0.00170

AC XY:

650

AN XY:

382938

show subpopulations

Gnomad4 AFR exome

AF:

0.0753

Gnomad4 AMR exome

AF:

0.00296

Gnomad4 ASJ exome

AF:

0.00168

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000114

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000154

Gnomad4 OTH exome

AF:

0.00359

GnomAD4 genome

AF:

0.0212

AC:

3100

AN:

146082

Hom.:

105

Cov.:

AF XY:

0.0201

AC XY:

1431

AN XY:

71066

show subpopulations

Gnomad4 AFR

AF:

0.0720

Gnomad4 AMR

AF:

0.00727

Gnomad4 ASJ

AF:

0.00324

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000274

Gnomad4 OTH

AF:

0.0113

Alfa

AF:

0.0160

Hom.:

ClinVar

Significance: Benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Sep 26, 2017	- -

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

SEPN1-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign. -

Eichsfeld type congenital muscular dystrophy

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 25, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.51

CADD

Benign

DANN

Uncertain

0.98

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

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