Variant chr16-18853610-A-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_015092.5(SMG1):c.4741T>G(p.Tyr1581Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000181 in 1,606,046 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 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

SMG1
NM_015092.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.04

Variant links:

Genes affected

SMG1 (HGNC:30045): (SMG1 nonsense mediated mRNA decay associated PI3K related kinase) This gene encodes a protein involved in nonsense-mediated mRNA decay (NMD) as part of the mRNA surveillance complex. The protein has kinase activity and is thought to function in NMD by phosphorylating the regulator of nonsense transcripts 1 protein. Alternatively spliced transcript variants have been described, but their full-length nature has yet to be determined. [provided by RefSeq, Mar 2013]

SMG1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.13179925).

BS2

High AC in GnomAdExome4 at 27 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SMG1	NM_015092.5 linkuse as main transcript	c.4741T>G	p.Tyr1581Asp	missense_variant	31/63	ENST00000446231.7	NP_055907.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SMG1	ENST00000446231.7 linkuse as main transcript	c.4741T>G	p.Tyr1581Asp	missense_variant	31/63	1	NM_015092.5	ENSP00000402515	P1	Q96Q15-1
SMG1	ENST00000565324.5 linkuse as main transcript	c.4411T>G	p.Tyr1471Asp	missense_variant	29/61	1		ENSP00000456259

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152152

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000186

AC:

AN:

1453894

Hom.:

Cov.:

AF XY:

0.0000194

AC XY:

AN XY:

722446

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.0000208

Gnomad4 OTH exome

AF:

0.0000665

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152152

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74332

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

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

Sep 01, 2021

The c.4741T>G (p.Y1581D) alteration is located in exon 31 (coding exon 31) of the SMG1 gene. This alteration results from a T to G substitution at nucleotide position 4741, causing the tyrosine (Y) at amino acid position 1581 to be replaced by an aspartic acid (D). 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

0.19

BayesDel_addAF

Benign

-0.046

BayesDel_noAF

Benign

-0.30

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.039

T;T

Eigen

Benign

-0.20

Eigen_PC

Benign

-0.0085

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.85

D;D

M_CAP

Benign

0.0085

MetaRNN

Benign

0.13

T;T

MetaSVM

Benign

-0.94

MutationAssessor

Benign

0.34

N;.

MutationTaster

Benign

0.78

N;N

PrimateAI

Uncertain

0.50

PROVEAN

Benign

-1.4

N;.

REVEL

Benign

0.13

Sift

Benign

0.041

D;.

Polyphen

0.27

B;.

Vest4

0.78

MutPred

0.27

Gain of disorder (P = 0.0447);.;

MVP

0.41

MPC

0.53

ClinPred

0.29

GERP RS

4.5

Varity_R

0.096

gMVP

0.55

Splicing

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