Genetic Variant CHSY3:p.Asn155Asn (chr5-129905294-C-T) – ACMG Classification: Likely_benign (-1 pts)

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP7

The NM_175856.5(CHSY3):c.465C>T(p.Asn155Asn) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000128 in 1,330,518 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

CHSY3
NM_175856.5 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.163

Publications

0 publications found

Variant links:

Genes affected

CHSY3 (HGNC:24293): (chondroitin sulfate synthase 3) CSS3 is a glycosyltransferase that has both glucuronyltransferase and N-acetylgalactosaminyltransferase activities (Yada et al., 2003 [PubMed 12907687]).[supplied by OMIM, Mar 2008]

CHSY3 links:

ENSG00000251680 (HGNC:58253):

ENSG00000251680 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.34).

BP7

Synonymous conserved (PhyloP=0.163 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHSY3	NM_175856.5 link	c.465C>T	p.Asn155Asn	synonymous_variant	Exon 1 of 3	ENST00000305031.5	NP_787052.3	Q70JA7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHSY3	ENST00000305031.5 link	c.465C>T	p.Asn155Asn	synonymous_variant	Exon 1 of 3	1	NM_175856.5	ENSP00000302629.4		Q70JA7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.0000128

AC:

AN:

1330518

Hom.:

Cov.:

AF XY:

0.0000107

AC XY:

AN XY:

652322

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30014

American (AMR)

AF:

0.00

AC:

AN:

29540

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21338

East Asian (EAS)

AF:

0.00

AC:

AN:

35234

South Asian (SAS)

AF:

0.00

AC:

AN:

71108

European-Finnish (FIN)

AF:

0.00

AC:

AN:

32100

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4794

European-Non Finnish (NFE)

AF:

0.0000162

AC:

AN:

1050954

Other (OTH)

AF:

0.00

AC:

AN:

55436

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.34

CADD

Benign

(source)

DANN

Uncertain

0.98

PhyloP100

0.16

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

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5-129905294-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over