Variant 17-76574367-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_006456.3(ST6GALNAC2):c.359A>G(p.Gln120Arg) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000891 in 1,459,376 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

ST6GALNAC2
NM_006456.3 missense, splice_region

Scores

Splicing: ADA: 0.0004528

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.32

Variant links:

Genes affected

ST6GALNAC2 (HGNC:10867): (ST6 N-acetylgalactosaminide alpha-2,6-sialyltransferase 2) ST6GALNAC2 belongs to a family of sialyltransferases that add sialic acids to the nonreducing ends of glycoconjugates. At the cell surface, these modifications have roles in cell-cell and cell-substrate interactions, bacterial adhesion, and protein targeting (Samyn-Petit et al., 2000 [PubMed 10742600]).[supplied by OMIM, Mar 2008]

ST6GALNAC2 links:

SNHG16 (HGNC:44352): (small nucleolar RNA host gene 16)

SNHG16 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.18585026).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ST6GALNAC2	NM_006456.3 linkuse as main transcript	c.359A>G	p.Gln120Arg	missense_variant, splice_region_variant	3/9	ENST00000225276.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ST6GALNAC2	ENST00000225276.10 linkuse as main transcript	c.359A>G	p.Gln120Arg	missense_variant, splice_region_variant	3/9	1	NM_006456.3	P1
SNHG16	ENST00000701062.1 linkuse as main transcript	n.194+12969T>C		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000808

AC:

AN:

247528

Hom.:

AF XY:

0.00000745

AC XY:

AN XY:

134306

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:

0.00

Gnomad NFE exome

AF:

0.0000180

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000891

AC:

AN:

1459376

Hom.:

Cov.:

AF XY:

0.00000689

AC XY:

AN XY:

725798

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000225

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:

0.0000108

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000659

Hom.:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

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

Oct 10, 2023

The c.359A>G (p.Q120R) alteration is located in exon 3 (coding exon 3) of the ST6GALNAC2 gene. This alteration results from a A to G substitution at nucleotide position 359, causing the glutamine (Q) at amino acid position 120 to be replaced by an arginine (R). 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

0.068

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.60

Cadd

Benign

Dann

Benign

0.91

DEOGEN2

Benign

0.038

Eigen

Benign

-0.24

Eigen_PC

Benign

-0.18

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.43

M_CAP

Benign

0.014

MetaRNN

Benign

0.19

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.1

MutationTaster

Benign

1.0

PrimateAI

Benign

0.36

PROVEAN

Benign

-1.7

REVEL

Benign

0.088

Sift

Benign

0.32

Sift4G

Benign

0.39

Polyphen

0.15

Vest4

0.083

MutPred

0.55

Gain of MoRF binding (P = 0.019);

MVP

0.33

MPC

0.19

ClinPred

0.16

GERP RS

4.5

Varity_R

0.31

gMVP

0.35

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00045

dbscSNV1_RF

Benign

0.060

SpliceAI score (max)

0.040

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