X-153504699-G-C

Variant names:

• chrX-153504699-G-C
• rs782728797
• NM_001711.6:c.68G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001711.6(BGN):​c.68G>C​(p.Gly23Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000911 in 1,097,929 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 24)
  • Exomes 𝑓: 9.1e-7 (0 hom. 0 hem.)
• Consequence: BGN NM_001711.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.847
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• Meester-Loeys syndrome

  Inheritance: XL Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, Illumina, Genomics England PanelApp, G2P
• X-linked spondyloepimetaphyseal dysplasia

  Inheritance: XL Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet, G2P
• familial thoracic aortic aneurysm and aortic dissection

  Inheritance: Unknown Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18943512).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001711.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BGN	NM_001711.6	MANE Select	c.68G>C	p.Gly23Ala	missense	Exon 2 of 8	NP_001702.1	P21810

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BGN	ENST00000331595.9	TSL:1 MANE Select	c.68G>C	p.Gly23Ala	missense	Exon 2 of 8	ENSP00000327336.4	P21810
	BGN	ENST00000859737.1		c.68G>C	p.Gly23Ala	missense	Exon 2 of 8	ENSP00000529796.1
	BGN	ENST00000859739.1		c.68G>C	p.Gly23Ala	missense	Exon 2 of 8	ENSP00000529798.1

Frequencies

GnomAD3 genomes Cov.: 24

GnomAD2 exomes AF: 0.00000546 AC: 1 AN: 183243 AF XY: 0.0000148

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000722

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 9.11e-7 AC: 1 AN: 1097929 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 363369

African (AFR) AF: 0.00 AC: 0 AN: 26403

American (AMR) AF: 0.00 AC: 0 AN: 35206

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19383

East Asian (EAS) AF: 0.00 AC: 0 AN: 30204

South Asian (SAS) AF: 0.0000185 AC: 1 AN: 54138

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40310

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4135

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 842065

Other (OTH) AF: 0.00 AC: 0 AN: 46085

GnomAD4 genome Cov.: 24

ExAC AF: 0.0000165 AC: 2

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.41
CADD	Benign	17
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.53	D
FATHMM_MKL	Benign	0.55	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.037	D
MetaRNN	Benign	0.19	T
MetaSVM	Benign	-0.88	T
MutationAssessor	Benign	1.8	L
PhyloP100		0.85
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	-2.3	N
REVEL	Benign	0.10
Sift	Benign	0.085	T
Sift4G	Benign	0.19	T
Polyphen		0.18	B
Vest4		0.12
MutPred		0.51		Gain of catalytic residue at G23 (P = 0.0556)
MVP		0.78
MPC		0.37
ClinPred		0.25	T
GERP RS		3.9
Varity_R		0.34
gMVP		0.59
Mutation Taster		=65/35	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs782728797; hg19: chrX-152770157;