rs200430189

Variant names:

Variant summary

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

The NM_001130965.3(SUN1):c.535G>A(p.Ala179Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000282 in 1,612,664 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. A179V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00017 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00029 ( 0 hom. )

Consequence

SUN1
NM_001130965.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -1.21

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=0.049177527).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SUN1	NM_001130965.3 link	c.535G>A	p.Ala179Thr	missense_variant	Exon 5 of 19	ENST00000401592.6	NP_001124437.1	O94901-8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SUN1	ENST00000401592.6 link	c.535G>A	p.Ala179Thr	missense_variant	Exon 5 of 19	1	NM_001130965.3	ENSP00000384015.1		O94901-8

Frequencies

GnomAD3 genomes

AF:

0.000171

AC:

AN:

152244

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000576

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000265

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000182

AC:

AN:

247794

Hom.:

AF XY:

0.000141

AC XY:

AN XY:

134582

show subpopulations

Gnomad AFR exome

AF:

0.0000657

Gnomad AMR exome

AF:

0.0000874

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000506

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000284

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000293

AC:

428

AN:

1460302

Hom.:

Cov.:

AF XY:

0.000293

AC XY:

213

AN XY:

726176

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000897

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000355

Gnomad4 OTH exome

AF:

0.000315

GnomAD4 genome

AF:

0.000171

AC:

AN:

152362

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74510

show subpopulations

Gnomad4 AFR

AF:

0.0000962

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000578

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000265

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000284

Hom.:

Bravo

AF:

0.000204

ESP6500AA

AF:

0.000248

AC:

ESP6500EA

AF:

0.000361

AC:

ExAC

AF:

0.000165

AC:

EpiCase

AF:

0.000327

EpiControl

AF:

0.000356

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.535G>A (p.A179T) alteration is located in exon 5 (coding exon 5) of the SUN1 gene. This alteration results from a G to A substitution at nucleotide position 535, causing the alanine (A) at amino acid position 179 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Emery-Dreifuss muscular dystrophy

Uncertain:1

Dec 18, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 179 of the SUN1 protein (p.Ala179Thr). This variant is present in population databases (rs200430189, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with SUN1-related conditions. ClinVar contains an entry for this variant (Variation ID: 580749). An algorithm developed to predict the effect of missense changes on protein structure and function outputs the following: PolyPhen-2: "Benign". The threonine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.60

CADD

Benign

0.16

DANN

Benign

0.96

DEOGEN2

Benign

0.0034

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

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.6

FATHMM_MKL

Benign

0.022

LIST_S2

Benign

0.59

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

M_CAP

Benign

0.0078

MetaRNN

Benign

0.049

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

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.34

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

PrimateAI

Benign

0.21

PROVEAN

Benign

-0.90

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

REVEL

Benign

0.18

Sift

Benign

0.95

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

Sift4G

Benign

0.42

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

Polyphen

0.23

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

Vest4

0.060

MVP

0.42

MPC

0.098

ClinPred

0.015

GERP RS

-8.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.071

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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