rs114826023

Positions:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000401592.6(SUN1):c.226G>A(p.Gly76Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000622 in 1,607,632 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/19 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. G76A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

SUN1
ENST00000401592.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.117

Variant links:

Genes affected

SUN1 (HGNC:18587): (Sad1 and UNC84 domain containing 1) This gene is a member of the unc-84 homolog family and encodes a nuclear envelope protein with an Unc84 (SUN) domain. The protein is involved in nuclear anchorage and migration. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jan 2019]

SUN1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.03240636).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SUN1	NM_001130965.3 linkuse as main transcript	c.226G>A	p.Gly76Ser	missense_variant	2/19	ENST00000401592.6	NP_001124437.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SUN1	ENST00000401592.6 linkuse as main transcript	c.226G>A	p.Gly76Ser	missense_variant	2/19	1	NM_001130965.3	ENSP00000384015	P3	O94901-8

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

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

GnomAD3 exomes

AF:

0.00000421

AC:

AN:

237356

Hom.:

AF XY:

0.00000775

AC XY:

AN XY:

129010

show subpopulations

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:

0.00000921

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000618

AC:

AN:

1455332

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

723382

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000631

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152300

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Emery-Dreifuss muscular dystrophy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 19, 2021

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. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The serine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. This variant has not been reported in the literature in individuals affected with SUN1-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces glycine with serine at codon 76 of the SUN1 protein (p.Gly76Ser). The glycine residue is weakly conserved and there is a small physicochemical difference between glycine and serine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.61

CADD

Benign

0.35

DANN

Benign

0.65

DEOGEN2

Benign

0.0022

.;.;.;.;T;T;T;.;T;T;.;.;.;T

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.0066

LIST_S2

Benign

0.72

T;.;T;T;.;T;T;T;T;T;T;T;T;T

M_CAP

Benign

0.015

MetaRNN

Benign

0.032

T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.26

.;.;N;.;.;.;.;.;.;.;N;N;.;.

MutationTaster

Benign

1.0

N;N;N;N;N;N;N;N

PrimateAI

Benign

0.35

PROVEAN

Benign

1.5

N;N;N;N;N;N;N;N;N;N;N;N;N;N

REVEL

Benign

0.019

Sift

Benign

0.66

T;T;T;T;T;T;T;T;T;T;T;T;T;T

Sift4G

Benign

0.75

T;T;T;T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.013

.;B;.;.;.;.;.;.;.;.;.;.;B;.

Vest4

0.098

MutPred

0.38

.;Gain of phosphorylation at G26 (P = 0.0201);.;.;.;.;.;.;.;.;.;.;Gain of phosphorylation at G26 (P = 0.0201);.;

MVP

0.15

MPC

0.086

ClinPred

0.025

GERP RS

-2.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.12

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