Variant 19-43732990-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PM1PM2BP4_Strong

The NM_019108.4(SMG9):c.1352G>A(p.Ser451Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000279 in 1,610,948 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

SMG9
NM_019108.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.58

Variant links:

Genes affected

SMG9 (HGNC:25763): (SMG9 nonsense mediated mRNA decay factor) This gene encodes a regulatory subunit of the SMG1 complex, which plays a critical role in nonsense-mediated mRNA decay (NMD). Binding of the encoded protein to the SMG1 complex kinase scaffold protein results in the inhibition of its kinase activity. Mutations in this gene cause a multiple congenital anomaly syndrome in human patients, characterized by brain malformation, congenital heart disease and other features. [provided by RefSeq, Jul 2016]

SMG9 links:

SMG9 (HGNC:):

SMG9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM1

In a modified_residue Phosphoserine (size 0) in uniprot entity SMG9_HUMAN

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04232347).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SMG9	NM_019108.4 linkuse as main transcript	c.1352G>A	p.Ser451Asn	missense_variant	13/14	ENST00000270066.11	NP_061981.2	Q9H0W8-1A0A024R0Q0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
SMG9	ENST00000270066.11 linkuse as main transcript	c.1352G>A	p.Ser451Asn	missense_variant	13/14	1	NM_019108.4	ENSP00000270066.6	Q9H0W8-1
SMG9	ENST00000601170.5 linkuse as main transcript	c.1352G>A	p.Ser451Asn	missense_variant	13/13	2		ENSP00000471398.1	Q9H0W8-2
SMG9	ENST00000600097.1 linkuse as main transcript	n.121G>A		non_coding_transcript_exon_variant	1/2	2

Frequencies

GnomAD3 genomes

AF:

0.000132

AC:

AN:

152048

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000459

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:

0.000479

GnomAD3 exomes

AF:

0.0000363

AC:

AN:

248022

Hom.:

AF XY:

0.0000149

AC XY:

AN XY:

134090

show subpopulations

Gnomad AFR exome

AF:

0.000555

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000171

AC:

AN:

1458782

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

725666

show subpopulations

Gnomad4 AFR exome

AF:

0.000600

Gnomad4 AMR exome

AF:

0.00

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:

0.00

Gnomad4 OTH exome

AF:

0.0000664

GnomAD4 genome

AF:

0.000131

AC:

AN:

152166

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74392

show subpopulations

Gnomad4 AFR

AF:

0.000458

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:

0.000474

Alfa

AF:

0.0000988

Hom.:

Bravo

AF:

0.000113

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000494

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 12, 2021

The c.1352G>A (p.S451N) alteration is located in exon 13 (coding exon 12) of the SMG9 gene. This alteration results from a G to A substitution at nucleotide position 1352, causing the serine (S) at amino acid position 451 to be replaced by an asparagine (N). 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

0.16

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.52

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.017

T;.

Eigen

Benign

-0.26

Eigen_PC

Benign

-0.059

FATHMM_MKL

Uncertain

0.77

LIST_S2

Uncertain

0.86

D;D

M_CAP

Benign

0.0053

MetaRNN

Benign

0.042

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.55

N;N

PrimateAI

Uncertain

0.68

PROVEAN

Benign

-0.15

N;.

REVEL

Benign

0.045

Sift

Benign

0.43

T;.

Sift4G

Benign

0.33

T;T

Polyphen

0.0040

B;.

Vest4

0.37

MVP

0.33

MPC

0.40

ClinPred

0.075

GERP RS

5.4

Varity_R

0.054

gMVP

0.20

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.15

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