Genetic Variant CHST2:p.Arg16Gln (chr3-143120863-G-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_004267.5(CHST2):c.47G>A(p.Arg16Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000871 in 1,377,120 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000095 ( 3 hom. )

Consequence

CHST2
NM_004267.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.806

Variant links:

Genes affected

CHST2 (HGNC:1970): (carbohydrate sulfotransferase 2) This locus encodes a sulfotransferase protein. The encoded enzyme catalyzes the sulfation of a nonreducing N-acetylglucosamine residue, and may play a role in biosynthesis of 6-sulfosialyl Lewis X antigen. [provided by RefSeq, Aug 2011]

CHST2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.041981578).

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHST2	NM_004267.5 link	c.47G>A	p.Arg16Gln	missense_variant	Exon 2 of 2	ENST00000309575.5	NP_004258.2	Q9Y4C5-1V9HVX9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHST2	ENST00000309575.5 link	c.47G>A	p.Arg16Gln	missense_variant	Exon 2 of 2	1	NM_004267.5	ENSP00000307911.3		Q9Y4C5-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

151834

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000620

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000153

AC:

AN:

19546

Hom.:

AF XY:

0.000256

AC XY:

AN XY:

11706

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:

0.000322

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000147

Gnomad OTH exome

AF:

0.00244

GnomAD4 exome

AF:

0.0000947

AC:

116

AN:

1225286

Hom.:

Cov.:

AF XY:

0.000127

AC XY:

AN XY:

599040

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:

0.000609

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000797

Gnomad4 OTH exome

AF:

0.0000800

GnomAD4 genome

AF:

0.0000263

AC:

AN:

151834

Hom.:

Cov.:

AF XY:

0.0000405

AC XY:

AN XY:

74154

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000620

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

ExAC

AF:

0.000136

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 13, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.47G>A (p.R16Q) alteration is located in exon 2 (coding exon 1) of the CHST2 gene. This alteration results from a G to A substitution at nucleotide position 47, causing the arginine (R) at amino acid position 16 to be replaced by a glutamine (Q). 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

0.17

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.23

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.21

Eigen

Benign

-0.58

Eigen_PC

Benign

-0.57

FATHMM_MKL

Benign

0.022

LIST_S2

Benign

0.52

M_CAP

Pathogenic

0.71

MetaRNN

Benign

0.042

MetaSVM

Uncertain

-0.19

MutationAssessor

Benign

0.0

PrimateAI

Pathogenic

0.87

PROVEAN

Benign

-0.20

REVEL

Benign

0.26

Sift

Benign

0.051

Sift4G

Benign

0.37

Polyphen

0.54

Vest4

0.095

MutPred

0.16

Loss of MoRF binding (P = 0.024);

MVP

0.79

MPC

1.2

ClinPred

0.035

GERP RS

3.1

Varity_R

0.072

gMVP

0.19

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