chrX-153504683-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BS1_SupportingBS2

The NM_001711.6(BGN):c.52C>T(p.Pro18Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000132 in 1,210,522 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000089 ( 0 hom., 3 hem., cov: 24)

Exomes 𝑓: 0.0000055 ( 0 hom. 3 hem. )

Consequence

BGN
NM_001711.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.12

Variant links:

Genes affected

BGN (HGNC:1044): (biglycan) This gene encodes a member of the small leucine-rich proteoglycan (SLRP) family of proteins. The encoded preproprotein is proteolytically processed to generate the mature protein, which plays a role in bone growth, muscle development and regeneration, and collagen fibril assembly in multiple tissues. This protein may also regulate inflammation and innate immunity. Additionally, the encoded protein may contribute to atherosclerosis and aortic valve stenosis in human patients. This gene and the related gene decorin are thought to be the result of a gene duplication. [provided by RefSeq, Nov 2015]

BGN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.0000886 (10/112824) while in subpopulation AMR AF= 0.000928 (10/10780). AF 95% confidence interval is 0.000502. There are 0 homozygotes in gnomad4. There are 3 alleles in male gnomad4 subpopulation. Median coverage is 24. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Hemizygotes in GnomAd4 at 3 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BGN	NM_001711.6 link	c.52C>T	p.Pro18Ser	missense_variant	Exon 2 of 8	ENST00000331595.9	NP_001702.1	P21810B4DNL4
BGN	XM_017029724.3 link	c.52C>T	p.Pro18Ser	missense_variant	Exon 1 of 7		XP_016885213.1	P21810

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
BGN	ENST00000331595.9 link	c.52C>T	p.Pro18Ser	missense_variant	Exon 2 of 8	1	NM_001711.6	ENSP00000327336.4	P21810
BGN	ENST00000431891.1 link	c.52C>T	p.Pro18Ser	missense_variant	Exon 2 of 5	5		ENSP00000402525.1	C9JKG1
BGN	ENST00000472615.5 link	n.196C>T		non_coding_transcript_exon_variant	Exon 2 of 8	5
BGN	ENST00000480756.1 link	n.194C>T		non_coding_transcript_exon_variant	Exon 2 of 8	5

Frequencies

GnomAD3 genomes

AF:

0.0000886

AC:

AN:

112824

Hom.:

Cov.:

AF XY:

0.0000858

AC XY:

AN XY:

34976

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000928

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:

0.00

GnomAD3 exomes

AF:

0.0000328

AC:

AN:

183014

Hom.:

AF XY:

0.0000444

AC XY:

AN XY:

67542

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000219

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000547

AC:

AN:

1097698

Hom.:

Cov.:

AF XY:

0.00000826

AC XY:

AN XY:

363150

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000170

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:

0.00

GnomAD4 genome

AF:

0.0000886

AC:

AN:

112824

Hom.:

Cov.:

AF XY:

0.0000858

AC XY:

AN XY:

34976

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000928

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:

0.00

Bravo

AF:

0.0000718

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Jul 25, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. ClinVar contains an entry for this variant (Variation ID: 1925100). This variant has not been reported in the literature in individuals affected with BGN-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.02%). This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 18 of the BGN protein (p.Pro18Ser). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.74

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.28

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.61

D;T

FATHMM_MKL

Uncertain

0.95

LIST_S2

Pathogenic

0.98

D;D

M_CAP

Uncertain

0.19

MetaRNN

Uncertain

0.72

D;D

MetaSVM

Uncertain

0.33

MutationAssessor

Pathogenic

3.1

M;.

PrimateAI

Uncertain

0.66

PROVEAN

Pathogenic

-5.4

D;D

REVEL

Uncertain

0.60

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0040

D;D

Polyphen

1.0

D;.

Vest4

0.56

MutPred

0.64

Loss of loop (P = 0.0112);Loss of loop (P = 0.0112);

MVP

0.87

MPC

1.0

ClinPred

0.85

GERP RS

4.7

Varity_R

0.84

gMVP

0.78

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.15

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