rs80200229

Positions:

• chr5-83539240-G-A

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_004385.5(VCAN):​c.6237G>A​(p.Lys2079=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00226 in 1,614,038 control chromosomes in the GnomAD database, including 85 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.012 (36 hom., cov: 32)
  • Exomes 𝑓: 0.0013 (49 hom.)
• Consequence: VCAN NM_004385.5 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -0.130

Genes affected

VCAN (HGNC:2464): (versican) This gene is a member of the aggrecan/versican proteoglycan family. The protein encoded is a large chondroitin sulfate proteoglycan and is a major component of the extracellular matrix. This protein is involved in cell adhesion, proliferation, proliferation, migration and angiogenesis and plays a central role in tissue morphogenesis and maintenance. Mutations in this gene are the cause of Wagner syndrome type 1. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2009]

VCAN-AS1 (HGNC:40163): (VCAN antisense RNA 1)

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BP6: Variant 5-83539240-G-A is Benign according to our data. Variant chr5-83539240-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 259372.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.13 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0118 (1803/152300) while in subpopulation AFR AF= 0.0411 (1707/41546). AF 95% confidence interval is 0.0395. There are 36 homozygotes in gnomad4. There are 857 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 1803 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
VCAN	NM_004385.5	c.6237G>A	p.Lys2079=	synonymous_variant	8/15	ENST00000265077.8
VCAN-AS1	NR_136215.1	n.285-5067C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
VCAN	ENST00000265077.8	c.6237G>A	p.Lys2079=	synonymous_variant	8/15	1	NM_004385.5

Frequencies

GnomAD3 genomes AF: 0.0118 AC: 1790 AN: 152182 Hom.: 35 Cov.: 32

Gnomad AFR AF: 0.0409

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00517

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000385

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00526

GnomAD3 exomes AF: 0.00290 AC: 727 AN: 250716 Hom.: 20 AF XY: 0.00218 AC XY: 296 AN XY: 135504

Gnomad AFR exome AF: 0.0410

Gnomad AMR exome AF: 0.00133

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000980

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000353

Gnomad OTH exome AF: 0.00131

GnomAD4 exome AF: 0.00126 AC: 1847 AN: 1461738 Hom.: 49 Cov.: 79 AF XY: 0.00112 AC XY: 814 AN XY: 727154

Gnomad4 AFR exome AF: 0.0448

Gnomad4 AMR exome AF: 0.00193

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000128

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000504

Gnomad4 OTH exome AF: 0.00305

GnomAD4 genome AF: 0.0118 AC: 1803 AN: 152300 Hom.: 36 Cov.: 32 AF XY: 0.0115 AC XY: 857 AN XY: 74464

Gnomad4 AFR AF: 0.0411

Gnomad4 AMR AF: 0.00516

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000386

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000441

Gnomad4 OTH AF: 0.00521

Alfa AF: 0.00546 Hom.: 7

Bravo AF: 0.0143

Asia WGS AF: 0.00433 AC: 15 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Wagner syndrome Benign:2

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jun 14, 2016	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jun 14, 2016	- -

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

-

- -

Vitreoretinopathy Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 29, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	0.61
DANN	Benign	0.58

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

Other links and lift over

dbSNP: rs80200229; hg19: chr5-82835059;