chr3-187072892-A-G

Position:

chr3-187072892-A-G

Variant summary

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

The NM_173216.2(ST6GAL1):c.749A>G(p.Asn250Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000378 in 1,614,074 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00023 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

ST6GAL1
NM_173216.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.20

Variant links:

Genes affected

ST6GAL1 (HGNC:10860): (ST6 beta-galactoside alpha-2,6-sialyltransferase 1) This gene encodes a member of glycosyltransferase family 29. The encoded protein is a type II membrane protein that catalyzes the transfer of sialic acid from CMP-sialic acid to galactose-containing substrates. The protein, which is normally found in the Golgi but can be proteolytically processed to a soluble form, is involved in the generation of the cell-surface carbohydrate determinants and differentiation antigens HB-6, CD75, and CD76. This gene has been incorrectly referred to as CD75. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2017]

ST6GAL1 links:

ST6GAL1 (HGNC:):

ST6GAL1 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=0.022324324).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ST6GAL1	NM_173216.2 linkuse as main transcript	c.749A>G	p.Asn250Ser	missense_variant	6/8	ENST00000169298.8	NP_775323.1	P15907-1
ST6GAL1	NM_001353916.2 linkuse as main transcript	c.749A>G	p.Asn250Ser	missense_variant	4/6		NP_001340845.1
ST6GAL1	NM_003032.3 linkuse as main transcript	c.749A>G	p.Asn250Ser	missense_variant	5/7		NP_003023.1	P15907-1
ST6GAL1	NM_173217.2 linkuse as main transcript	c.56A>G	p.Asn19Ser	missense_variant	5/7		NP_775324.1	P15907-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ST6GAL1	ENST00000169298.8 linkuse as main transcript	c.749A>G	p.Asn250Ser	missense_variant	6/8	1	NM_173216.2	ENSP00000169298.3		P15907-1

Frequencies

GnomAD3 genomes

AF:

0.000230

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000820

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

GnomAD3 exomes

AF:

0.0000795

AC:

AN:

251488

Hom.:

AF XY:

0.0000883

AC XY:

AN XY:

135920

show subpopulations

Gnomad AFR exome

AF:

0.000923

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:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000178

AC:

AN:

1461766

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727176

show subpopulations

Gnomad4 AFR exome

AF:

0.000568

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:

0.00000630

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000230

AC:

AN:

152308

Hom.:

Cov.:

AF XY:

0.000309

AC XY:

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.000818

Gnomad4 AMR

AF:

0.0000654

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:

0.00

Alfa

AF:

0.000150

Hom.:

Bravo

AF:

0.000246

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000741

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

Mar 08, 2024

The c.749A>G (p.N250S) alteration is located in exon 6 (coding exon 3) of the ST6GAL1 gene. This alteration results from a A to G substitution at nucleotide position 749, causing the asparagine (N) at amino acid position 250 to be replaced by a serine (S). 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

0.065

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.65

CADD

Benign

9.3

DANN

Benign

0.97

DEOGEN2

Benign

0.075

T;.;T;T;T;T

Eigen

Benign

-0.59

Eigen_PC

Benign

-0.45

FATHMM_MKL

Benign

0.57

LIST_S2

Benign

0.56

.;T;T;T;T;T

M_CAP

Benign

0.0057

MetaRNN

Benign

0.022

T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

L;.;.;.;L;.

PrimateAI

Benign

0.26

PROVEAN

Benign

-0.21

N;N;D;N;N;N

REVEL

Benign

0.024

Sift

Benign

0.28

T;T;.;T;T;T

Sift4G

Benign

0.38

T;T;.;T;T;T

Polyphen

0.0050

B;.;.;.;B;.

Vest4

0.12

MVP

0.068

MPC

0.16

ClinPred

0.011

GERP RS

0.72

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.058

gMVP

0.22

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