Genetic Variant VCAN:p.Tyr1917Phe (chr5-83538753-A-T) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_004385.5(VCAN):c.5750A>T(p.Tyr1917Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000392 in 1,614,050 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0021 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00022 ( 1 hom. )

Consequence

VCAN
NM_004385.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 0.265

Publications

2 publications found

Variant links:

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 links:

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

VCAN-AS1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0038052201).

BP6

Variant 5-83538753-A-T is Benign according to our data. Variant chr5-83538753-A-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 259370.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00208 (317/152300) while in subpopulation AFR AF = 0.00676 (281/41572). AF 95% confidence interval is 0.00611. There are 2 homozygotes in GnomAd4. There are 158 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 317 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004385.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
VCAN	NM_004385.5	MANE Select	c.5750A>T	p.Tyr1917Phe	missense	Exon 8 of 15	NP_004376.2
VCAN	NM_001164097.2		c.2789A>T	p.Tyr930Phe	missense	Exon 7 of 14	NP_001157569.1
VCAN	NM_001164098.2		c.4004-6784A>T		intron	N/A	NP_001157570.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
VCAN	ENST00000265077.8	TSL:1 MANE Select	c.5750A>T	p.Tyr1917Phe	missense	Exon 8 of 15	ENSP00000265077.3
VCAN	ENST00000343200.9	TSL:1	c.2789A>T	p.Tyr930Phe	missense	Exon 7 of 14	ENSP00000340062.5
VCAN	ENST00000513960.5	TSL:1	c.2789A>T	p.Tyr930Phe	missense	Exon 7 of 7	ENSP00000426251.1

Frequencies

GnomAD3 genomes

AF:

0.00207

AC:

315

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00673

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00183

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00287

GnomAD2 exomes

AF:

0.000468

AC:

117

AN:

249898

AF XY:

0.000376

show subpopulations

Gnomad AFR exome

AF:

0.00606

Gnomad AMR exome

AF:

0.000434

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000265

Gnomad OTH exome

AF:

0.000494

GnomAD4 exome

AF:

0.000216

AC:

316

AN:

1461750

Hom.:

Cov.:

AF XY:

0.000197

AC XY:

143

AN XY:

727186

show subpopulations

African (AFR)

AF:

0.00603

AC:

202

AN:

33474

American (AMR)

AF:

0.000693

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53368

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000396

AC:

AN:

1111946

Other (OTH)

AF:

0.000580

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

105

131

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00208

AC:

317

AN:

152300

Hom.:

Cov.:

AF XY:

0.00212

AC XY:

158

AN XY:

74468

show subpopulations

African (AFR)

AF:

0.00676

AC:

281

AN:

41572

American (AMR)

AF:

0.00183

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68012

Other (OTH)

AF:

0.00284

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000281

Hom.:

Bravo

AF:

0.00274

ESP6500AA

AF:

0.00409

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000486

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Wagner disease

Benign:2

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Vitreoretinopathy

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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

Jan 15, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.45

CADD

Benign

0.90

(source)

DANN

Benign

0.73

DEOGEN2

Benign

0.15

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.17

LIST_S2

Benign

0.62

MetaRNN

Benign

0.0038

MetaSVM

Benign

-0.89

MutationAssessor

Benign

0.90

PhyloP100

0.27

PrimateAI

Benign

0.22

PROVEAN

Benign

-1.0

REVEL

Benign

0.027

Sift

Uncertain

0.0070

Sift4G

Benign

0.72

Polyphen

0.011

Vest4

0.098

MVP

0.34

MPC

0.080

ClinPred

0.00013

GERP RS

0.43

Varity_R

0.069

gMVP

0.11

Mutation Taster

=100/0

polymorphism

(source)

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over