dbSNP rs376527030: BCAN:p.Arg86Trp (chr1-156646965-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_021948.5(BCAN):c.256C>T(p.Arg86Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000179 in 1,612,774 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00019 ( 1 hom. )

Consequence

BCAN
NM_021948.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.301

Variant links:

Genes affected

BCAN (HGNC:23059): (brevican) This gene encodes a member of the lectican family of chondroitin sulfate proteoglycans that is specifically expressed in the central nervous system. This protein is developmentally regulated and may function in the formation of the brain extracellular matrix. This protein is highly expressed in gliomas and may promote the growth and cell motility of brain tumor cells. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Sep 2011]

BCAN links:

BCAN-AS2 (HGNC:56267): (BCAN antisense RNA 2)

BCAN-AS2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.27609187).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BCAN	NM_021948.5 link	c.256C>T	p.Arg86Trp	missense_variant	Exon 3 of 14	ENST00000329117.10	NP_068767.3	Q96GW7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BCAN	ENST00000329117.10 link	c.256C>T	p.Arg86Trp	missense_variant	Exon 3 of 14	1	NM_021948.5	ENSP00000331210.4		Q96GW7-1

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000221

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000151

AC:

AN:

245716

Hom.:

AF XY:

0.000135

AC XY:

AN XY:

133758

show subpopulations

Gnomad AFR exome

AF:

0.0000645

Gnomad AMR exome

AF:

0.0000582

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000164

Gnomad FIN exome

AF:

0.000142

Gnomad NFE exome

AF:

0.000236

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000186

AC:

271

AN:

1460568

Hom.:

Cov.:

AF XY:

0.000178

AC XY:

129

AN XY:

726602

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000672

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000174

Gnomad4 FIN exome

AF:

0.0000947

Gnomad4 NFE exome

AF:

0.000213

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.000118

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74352

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000941

Gnomad4 NFE

AF:

0.000221

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000224

Hom.:

Bravo

AF:

0.000162

ESP6500AA

AF:

0.000228

AC:

ESP6500EA

AF:

0.000117

AC:

ExAC

AF:

0.000124

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000297

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 05, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.256C>T (p.R86W) alteration is located in exon 3 (coding exon 2) of the BCAN gene. This alteration results from a C to T substitution at nucleotide position 256, causing the arginine (R) at amino acid position 86 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.27

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.62

.;D;T;.

Eigen

Benign

0.11

Eigen_PC

Benign

0.017

FATHMM_MKL

Benign

0.30

LIST_S2

Uncertain

0.96

D;D;D;D

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.28

T;T;T;T

MetaSVM

Benign

-0.69

MutationAssessor

Uncertain

2.3

.;M;.;M

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-5.8

D;D;D;D

REVEL

Benign

0.22

Sift

Uncertain

0.0020

D;D;D;D

Sift4G

Pathogenic

0.0010

D;D;D;D

Polyphen

1.0, 0.99

.;D;.;D

Vest4

0.55, 0.55

MVP

0.79

MPC

1.6

ClinPred

0.21

GERP RS

3.7

Varity_R

0.33

gMVP

0.70

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