chrX-132628495-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001394073.1(HS6ST2):​c.1666G>A​(p.Glu556Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000182 in 1,097,969 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. Variant has been reported in ClinVar as Uncertain significance (no stars).

Frequency

Genomes: not found (cov: 22)
Exomes 𝑓: 0.0000018 ( 0 hom. 0 hem. )

Consequence

HS6ST2
NM_001394073.1 missense

Scores

1
10
6

Clinical Significance

Uncertain significance no assertion criteria provided U:1

Conservation

PhyloP100: 2.64
Variant links:
Genes affected
HS6ST2 (HGNC:19133): (heparan sulfate 6-O-sulfotransferase 2) Heparan sulfate proteoglycans are ubiquitous components of the cell surface, extracellular matrix, and basement membranes, and interact with various ligands to influence cell growth, differentiation, adhesion, and migration. This gene encodes a member of the heparan sulfate (HS) sulfotransferase gene family, which catalyze the transfer of sulfate to HS. Different family members and isoforms are thought to synthesize heparan sulfates with tissue-specific structures and functions. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
HS6ST2NM_001394073.1 linkuse as main transcriptc.1666G>A p.Glu556Lys missense_variant 5/5 ENST00000370833.7 NP_001381002.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
HS6ST2ENST00000370833.7 linkuse as main transcriptc.1666G>A p.Glu556Lys missense_variant 5/55 NM_001394073.1 ENSP00000359870 Q96MM7-4

Frequencies

GnomAD3 genomes
Cov.:
22
GnomAD4 exome
AF:
0.00000182
AC:
2
AN:
1097969
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
363451
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:
0.00
Gnomad4 NFE exome
AF:
0.00000238
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
22
Bravo
AF:
0.00000378

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

HS6ST2-related disorder Uncertain:1
Uncertain significance, no assertion criteria providedclinical testingPreventionGenetics, part of Exact SciencesNov 08, 2023The HS6ST2 c.1666G>A variant is predicted to result in the amino acid substitution p.Glu556Lys. To our knowledge, this variant has not been reported in the literature or in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. Although we suspect that this variant may be pathogenic, at this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.48
BayesDel_addAF
Benign
-0.0052
T
BayesDel_noAF
Benign
-0.25
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Benign
0.24
T;.;.;T
FATHMM_MKL
Uncertain
0.96
D
LIST_S2
Uncertain
0.95
.;.;D;D
M_CAP
Pathogenic
0.59
D
MetaRNN
Uncertain
0.45
T;T;T;T
MetaSVM
Uncertain
-0.14
T
MutationAssessor
Benign
0.97
L;.;.;L
MutationTaster
Benign
0.99
D;D;D;D;D
PrimateAI
Uncertain
0.55
T
PROVEAN
Benign
-2.0
N;N;.;.
REVEL
Uncertain
0.31
Sift
Uncertain
0.0020
D;D;.;.
Sift4G
Uncertain
0.0050
D;D;D;D
Polyphen
0.98
D;.;.;D
Vest4
0.37
MutPred
0.44
Gain of methylation at E516 (P = 0.0184);.;.;Gain of methylation at E516 (P = 0.0184);
MVP
0.87
MPC
1.7
ClinPred
0.71
D
GERP RS
6.0
Varity_R
0.59
gMVP
0.41

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.

Other links and lift over

dbSNP: rs2063494629; hg19: chrX-131762523; API