Variant 22-31083268-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_134269.3(SMTN):c.10G>A(p.Glu4Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000313 in 1,595,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

SMTN
NM_134269.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.87

Variant links:

Genes affected

SMTN (HGNC:11126): (smoothelin) This gene encodes a structural protein that is found exclusively in contractile smooth muscle cells. It associates with stress fibers and constitutes part of the cytoskeleton. This gene is localized to chromosome 22q12.3, distal to the TUPLE1 locus and outside the DiGeorge syndrome deletion. Alternative splicing of this gene results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, May 2011]

SMTN links:

SMTN (HGNC:):

SMTN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.12140113).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SMTN	NM_134269.3 linkuse as main transcript	c.10G>A	p.Glu4Lys	missense_variant	2/21	ENST00000333137.12	NP_599031.1	P53814-5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SMTN	ENST00000333137.12 linkuse as main transcript	c.10G>A	p.Glu4Lys	missense_variant	2/21	1	NM_134269.3	ENSP00000329532.7		P53814-5

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000589

AC:

AN:

220604

Hom.:

AF XY:

0.0000591

AC XY:

AN XY:

118476

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000101

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000125

Gnomad SAS exome

AF:

0.000112

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000497

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000312

AC:

AN:

1443640

Hom.:

Cov.:

AF XY:

0.0000307

AC XY:

AN XY:

716372

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.0000738

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000256

Gnomad4 SAS exome

AF:

0.0000966

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000217

Gnomad4 OTH exome

AF:

0.000117

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152248

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74372

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000278

Hom.:

Bravo

AF:

0.0000227

ExAC

AF:

0.0000499

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 05, 2023

The c.172G>A (p.E58K) alteration is located in exon 2 (coding exon 2) of the SMTN gene. This alteration results from a G to A substitution at nucleotide position 172, causing the glutamic acid (E) at amino acid position 58 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.33

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.066

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

Eigen

Benign

-0.095

Eigen_PC

Benign

-0.070

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.94

D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.038

MetaRNN

Benign

0.12

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

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.55

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

PrimateAI

Uncertain

0.58

PROVEAN

Uncertain

-3.6

D;D;N;N;N;N;N;.;.

REVEL

Benign

0.12

Sift

Uncertain

0.0090

D;D;D;D;D;D;D;.;.

Sift4G

Benign

0.071

T;T;T;T;T;T;T;D;T

Polyphen

0.69, 0.46

.;.;.;.;.;P;P;.;.

Vest4

0.33, 0.45, 0.32, 0.51

MutPred

0.22

.;Gain of ubiquitination at E4 (P = 0.0077);.;.;Gain of ubiquitination at E4 (P = 0.0077);Gain of ubiquitination at E4 (P = 0.0077);Gain of ubiquitination at E4 (P = 0.0077);Gain of ubiquitination at E4 (P = 0.0077);.;

MVP

0.043

MPC

0.40

ClinPred

0.23

GERP RS

3.2

Varity_R

0.22

gMVP

0.45

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