Genetic Variant ST6GALNAC6:p.Gly232Asp (chr9-127890646-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_013443.5(ST6GALNAC6):c.695G>A(p.Gly232Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000118 in 1,613,060 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

ST6GALNAC6
NM_013443.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.84

Variant links:

Genes affected

ST6GALNAC6 (HGNC:23364): (ST6 N-acetylgalactosaminide alpha-2,6-sialyltransferase 6) ST6GALNAC6 belongs to a family of sialyltransferases that modify proteins and ceramides on the cell surface to alter cell-cell or cell-extracellular matrix interactions (Tsuchida et al., 2003 [PubMed 12668675]).[supplied by OMIM, Mar 2008]

ST6GALNAC6 links:

ENSG00000257524 (HGNC:):

ENSG00000257524 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.908

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ST6GALNAC6	NM_013443.5 link	c.695G>A	p.Gly232Asp	missense_variant	Exon 5 of 7	ENST00000373146.6	NP_038471.2	Q969X2-1A0A0S2Z5G9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ST6GALNAC6	ENST00000373146.6 link	c.695G>A	p.Gly232Asp	missense_variant	Exon 5 of 7	1	NM_013443.5	ENSP00000362239.1		Q969X2-1
ENSG00000257524	ENST00000646171.1 link	n.593G>A		non_coding_transcript_exon_variant	Exon 4 of 13			ENSP00000495484.1		A0A2R8YFX0

Frequencies

GnomAD3 genomes

AF:

0.0000525

AC:

AN:

152240

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000188

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000404

AC:

AN:

247372

Hom.:

AF XY:

0.0000223

AC XY:

AN XY:

134480

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.0000464

Gnomad NFE exome

AF:

0.0000815

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000125

AC:

183

AN:

1460820

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

726702

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:

0.0000954

Gnomad4 NFE exome

AF:

0.000156

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152240

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74380

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000188

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000450

Hom.:

Bravo

AF:

0.0000416

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 17, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.695G>A (p.G232D) alteration is located in exon 5 (coding exon 4) of the ST6GALNAC6 gene. This alteration results from a G to A substitution at nucleotide position 695, causing the glycine (G) at amino acid position 232 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

Pathogenic

0.94

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.42

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.27

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

Eigen

Pathogenic

0.99

Eigen_PC

Pathogenic

0.94

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.95

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

M_CAP

Uncertain

0.15

MetaRNN

Pathogenic

0.91

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

MetaSVM

Uncertain

0.71

MutationAssessor

Pathogenic

3.6

H;H;.;.;H;.;.

PrimateAI

Uncertain

0.70

PROVEAN

Pathogenic

-6.9

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

REVEL

Pathogenic

0.78

Sift

Pathogenic

0.0

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

Sift4G

Uncertain

0.0090

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

Polyphen

1.0

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

Vest4

0.93

MVP

0.89

MPC

1.6

ClinPred

1.0

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.94

gMVP

0.91

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