Variant chr8-43140508-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_152419.3(HGSNAT):c.12G>A(p.Ala4=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000146 in 1,058,390 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. A4A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00077 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000045 ( 1 hom. )

Consequence

HGSNAT
NM_152419.3 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter U:1B:1

Conservation

PhyloP100: -0.412

Variant links:

Genes affected

HGSNAT (HGNC:26527): (heparan-alpha-glucosaminide N-acetyltransferase) This gene encodes a lysosomal acetyltransferase, which is one of several enzymes involved in the lysosomal degradation of heparin sulfate. Mutations in this gene are associated with Sanfilippo syndrome C, one type of the lysosomal storage disease mucopolysaccaridosis III, which results from impaired degradation of heparan sulfate. [provided by RefSeq, Jan 2009]

HGSNAT links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.76).

BP6

Variant 8-43140508-G-A is Benign according to our data. Variant chr8-43140508-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 761828.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-0.412 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HGSNAT	NM_152419.3 linkuse as main transcript	c.12G>A	p.Ala4=	synonymous_variant	1/18	ENST00000379644.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HGSNAT	ENST00000379644.9 linkuse as main transcript	c.12G>A	p.Ala4=	synonymous_variant	1/18	2	NM_152419.3	P3	Q68CP4-2
HGSNAT	ENST00000520704.1 linkuse as main transcript	c.-139G>A		5_prime_UTR_variant, NMD_transcript_variant	1/10	1
HGSNAT	ENST00000517319.1 linkuse as main transcript	c.12G>A	p.Ala4=	synonymous_variant, NMD_transcript_variant	1/5	4

Frequencies

GnomAD3 genomes

AF:

0.000770

AC:

114

AN:

148084

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00268

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000201

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:

0.00

Gnomad OTH

AF:

0.000490

GnomAD4 exome

AF:

0.0000450

AC:

AN:

910198

Hom.:

Cov.:

AF XY:

0.0000398

AC XY:

AN XY:

426748

show subpopulations

Gnomad4 AFR exome

AF:

0.00193

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:

0.00

Gnomad4 OTH exome

AF:

0.000219

GnomAD4 genome

AF:

0.000769

AC:

114

AN:

148192

Hom.:

Cov.:

AF XY:

0.000651

AC XY:

AN XY:

72230

show subpopulations

Gnomad4 AFR

AF:

0.00267

Gnomad4 AMR

AF:

0.000201

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000484

Alfa

AF:

0.0000713

Hom.:

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Mucopolysaccharidosis, MPS-III-C

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Nov 11, 2019

- -

Mucopolysaccharidosis, MPS-III-C;C4225287:Retinitis pigmentosa 73

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.76

CADD

Benign

6.4

DANN

Benign

0.88

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

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