Variant 12-22287250-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_Strong

The NM_003034.4(ST8SIA1):c.280A>G(p.Met94Val) variant causes a missense change. The variant allele was found at a frequency of 0.00103 in 1,614,108 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00068 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0011 ( 1 hom. )

Consequence

ST8SIA1
NM_003034.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.71

Variant links:

Genes affected

ST8SIA1 (HGNC:10869): (ST8 alpha-N-acetyl-neuraminide alpha-2,8-sialyltransferase 1) Gangliosides are membrane-bound glycosphingolipids containing sialic acid. Ganglioside GD3 is known to be important for cell adhesion and growth of cultured malignant cells. The protein encoded by this gene is a type II membrane protein that catalyzes the transfer of sialic acid from CMP-sialic acid to GM3 to produce gangliosides GD3 and GT3. The encoded protein may be found in the Golgi apparatus and is a member of glycosyltransferase family 29. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jan 2015]

ST8SIA1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.017443776).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ST8SIA1	NM_003034.4 linkuse as main transcript	c.280A>G	p.Met94Val	missense_variant	2/5	ENST00000396037.9
ST8SIA1	NM_001304450.2 linkuse as main transcript	c.-40A>G		5_prime_UTR_variant	2/4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ST8SIA1	ENST00000396037.9 linkuse as main transcript	c.280A>G	p.Met94Val	missense_variant	2/5	1	NM_003034.4	P1	Q92185-1
ST8SIA1	ENST00000261197.7 linkuse as main transcript	c.280A>G	p.Met94Val	missense_variant, NMD_transcript_variant	2/4	1			Q92185-2
ST8SIA1	ENST00000540824.5 linkuse as main transcript	c.133A>G	p.Met45Val	missense_variant	2/5	4
ST8SIA1	ENST00000541868.1 linkuse as main transcript	c.211A>G	p.Met71Val	missense_variant	2/4	3

Frequencies

GnomAD3 genomes

AF:

0.000683

AC:

104

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000386

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000850

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00101

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000462

AC:

116

AN:

251304

Hom.:

AF XY:

0.000442

AC XY:

AN XY:

135840

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000231

Gnomad NFE exome

AF:

0.000845

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.00106

AC:

1554

AN:

1461814

Hom.:

Cov.:

AF XY:

0.00107

AC XY:

780

AN XY:

727210

show subpopulations

Gnomad4 AFR exome

AF:

0.000299

Gnomad4 AMR exome

AF:

0.000291

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000696

Gnomad4 FIN exome

AF:

0.000449

Gnomad4 NFE exome

AF:

0.00131

Gnomad4 OTH exome

AF:

0.000762

GnomAD4 genome

AF:

0.000683

AC:

104

AN:

152294

Hom.:

Cov.:

AF XY:

0.000645

AC XY:

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.000385

Gnomad4 AMR

AF:

0.000849

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.00101

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000954

Hom.:

Bravo

AF:

0.000869

TwinsUK

AF:

0.00189

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00116

AC:

ExAC

AF:

0.000601

AC:

EpiCase

AF:

0.000545

EpiControl

AF:

0.000712

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

Jul 08, 2021

The c.280A>G (p.M94V) alteration is located in exon 2 (coding exon 2) of the ST8SIA1 gene. This alteration results from a A to G substitution at nucleotide position 280, causing the methionine (M) at amino acid position 94 to be replaced by a valine (V). 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

0.087

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Benign

0.82

DEOGEN2

Benign

0.046

T;.;.

Eigen

Benign

-0.25

Eigen_PC

Benign

0.017

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.84

T;T;T

M_CAP

Benign

0.0089

MetaRNN

Benign

0.017

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.97

N;.;.

MutationTaster

Benign

0.99

D;D

PrimateAI

Uncertain

0.59

PROVEAN

Benign

0.88

N;N;N

REVEL

Benign

0.13

Sift

Benign

1.0

T;T;T

Sift4G

Benign

1.0

T;.;T

Polyphen

0.0050

B;.;.

Vest4

0.21

MVP

0.34

MPC

0.44

ClinPred

0.019

GERP RS

5.6

Varity_R

0.27

gMVP

0.63

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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