Genetic Variant CHST15:p.Ala283Ser (chr10-124044619-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_001270764.2(CHST15):c.847G>T(p.Ala283Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000561 in 1,425,414 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000056 ( 0 hom. )

Consequence

CHST15
NM_001270764.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.55

Variant links:

Genes affected

CHST15 (HGNC:18137): (carbohydrate sulfotransferase 15) Chondroitin sulfate (CS) is a glycosaminoglycan which is an important structural component of the extracellular matrix and which links to proteins to form proteoglycans. Chondroitin sulfate E (CS-E) is an isomer of chondroitin sulfate in which the C-4 and C-6 hydroxyl groups are sulfated. This gene encodes a type II transmembrane glycoprotein that acts as a sulfotransferase to transfer sulfate to the C-6 hydroxal group of chondroitin sulfate. This gene has also been identified as being co-expressed with RAG1 in B-cells and as potentially acting as a B-cell surface signaling receptor. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2012]

CHST15 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=0.22543523).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHST15	NM_001270764.2 link	c.847G>T	p.Ala283Ser	missense_variant	Exon 3 of 8	ENST00000435907.6	NP_001257693.1	Q7LFX5-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CHST15	ENST00000435907.6 link	c.847G>T	p.Ala283Ser	missense_variant	Exon 3 of 8	1	NM_001270764.2	ENSP00000402394.1	Q7LFX5-1
CHST15	ENST00000346248.7 link	c.847G>T	p.Ala283Ser	missense_variant	Exon 3 of 8	1		ENSP00000333947.6	Q7LFX5-1
CHST15	ENST00000628426.1 link	c.847G>T	p.Ala283Ser	missense_variant	Exon 3 of 6	2		ENSP00000485905.1	Q7LFX5-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000134

AC:

AN:

223892

Hom.:

AF XY:

0.0000164

AC XY:

AN XY:

121914

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000631

Gnomad SAS exome

AF:

0.0000730

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000561

AC:

AN:

1425414

Hom.:

Cov.:

AF XY:

0.00000850

AC XY:

AN XY:

706032

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:

0.0000724

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000183

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 19, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.847G>T (p.A283S) alteration is located in exon 3 (coding exon 2) of the CHST15 gene. This alteration results from a G to T substitution at nucleotide position 847, causing the alanine (A) at amino acid position 283 to be replaced by a serine (S). 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

0.21

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.40

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.042

T;T;.

Eigen

Uncertain

0.25

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.91

D;.;D

M_CAP

Benign

0.0097

MetaRNN

Benign

0.23

T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.44

N;N;N

PrimateAI

Uncertain

0.63

PROVEAN

Benign

-0.20

N;N;.

REVEL

Benign

0.098

Sift

Benign

0.31

T;T;.

Sift4G

Benign

0.49

T;T;T

Polyphen

0.57

P;P;P

Vest4

0.35

MutPred

0.42

Gain of disorder (P = 0.0249);Gain of disorder (P = 0.0249);Gain of disorder (P = 0.0249);

MVP

0.52

MPC

0.35

ClinPred

0.20

GERP RS

5.7

Varity_R

0.17

gMVP

0.72

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