Genetic Variant HS3ST6:p.Ala282Thr (chr16-1911775-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

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

The NM_001009606.4(HS3ST6):c.844G>A(p.Ala282Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000088 in 1,613,798 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000090 ( 0 hom. )

Consequence

HS3ST6
NM_001009606.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.36

Variant links:

Genes affected

HS3ST6 (HGNC:14178): (heparan sulfate-glucosamine 3-sulfotransferase 6) Predicted to enable [heparan sulfate]-glucosamine 3-sulfotransferase 1 activity. Predicted to be involved in glycosaminoglycan biosynthetic process. Predicted to act upstream of or within blastocyst hatching. Predicted to be located in Golgi membrane. [provided by Alliance of Genome Resources, Apr 2022]

HS3ST6 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=0.11536434).

BS2

High AC in GnomAd4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HS3ST6	NM_001009606.4 link	c.844G>A	p.Ala282Thr	missense_variant	Exon 2 of 2	ENST00000454677.3	NP_001009606.3	Q96QI5
HS3ST6	XM_011522608.3 link	c.469G>A	p.Ala157Thr	missense_variant	Exon 2 of 2		XP_011520910.1
HS3ST6	XM_011522609.2 link	c.424G>A	p.Ala142Thr	missense_variant	Exon 2 of 2		XP_011520911.1
HS3ST6	XM_047434487.1 link	c.424G>A	p.Ala142Thr	missense_variant	Exon 2 of 2		XP_047290443.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HS3ST6	ENST00000454677.3 link	c.844G>A	p.Ala282Thr	missense_variant	Exon 2 of 2	1	NM_001009606.4	ENSP00000416741.3		Q96QI5

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152220

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000519

AC:

AN:

250276

Hom.:

AF XY:

0.0000517

AC XY:

AN XY:

135492

show subpopulations

Gnomad AFR exome

AF:

0.0000622

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:

0.000106

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000903

AC:

132

AN:

1461460

Hom.:

Cov.:

AF XY:

0.0000894

AC XY:

AN XY:

727064

show subpopulations

Gnomad4 AFR exome

AF:

0.0000897

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000114

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000656

AC:

AN:

152338

Hom.:

Cov.:

AF XY:

0.0000671

AC XY:

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.0000240

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:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000127

Hom.:

Bravo

AF:

0.0000718

ExAC

AF:

0.0000741

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

Aug 08, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.751G>A (p.A251T) alteration is located in exon 2 (coding exon 2) of the HS3ST6 gene. This alteration results from a G to A substitution at nucleotide position 751, causing the alanine (A) at amino acid position 251 to be replaced by a threonine (T). 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

0.082

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.40

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.10

Eigen

Uncertain

0.20

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.80

M_CAP

Benign

0.022

MetaRNN

Benign

0.12

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.2

PrimateAI

Uncertain

0.60

REVEL

Benign

0.058

Sift4G

Benign

0.14

Polyphen

0.84

Vest4

0.13

MutPred

0.46

Loss of helix (P = 0.0093);

MVP

0.33

ClinPred

0.078

GERP RS

4.8

Varity_R

0.10

gMVP

0.38

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