chr19-55014288-T-C

Position:

chr19-55014288-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001083899.2(GP6):c.1657A>G(p.Asn553Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00007 in 1,414,268 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

GP6
NM_001083899.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.220

Variant links:

Genes affected

GP6 (HGNC:14388): (glycoprotein VI platelet) This gene encodes a platelet membrane glycoprotein of the immunoglobulin superfamily. The encoded protein is a receptor for collagen and plays a critical role in collagen-induced platelet aggregation and thrombus formation. The encoded protein forms a complex with the Fc receptor gamma-chain that initiates the platelet activation signaling cascade upon collagen binding. Mutations in this gene are a cause of platelet-type bleeding disorder-11 (BDPLT11). Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

GP6 links:

GP6-AS1 (HGNC:55305): (GP6 antisense RNA 1)

GP6-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.095810205).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GP6	NM_001083899.2 linkuse as main transcript	c.1657A>G	p.Asn553Asp	missense_variant	8/8	ENST00000310373.7	NP_001077368.2
GP6-AS1	XR_001754012.3 linkuse as main transcript	n.121+7824T>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GP6	ENST00000310373.7 linkuse as main transcript	c.1657A>G	p.Asn553Asp	missense_variant	8/8	1	NM_001083899.2	ENSP00000308782		Q9HCN6-3
GP6-AS1	ENST00000593060.5 linkuse as main transcript	n.155+7824T>C		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152000

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000176

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000582

AC:

AN:

240518

Hom.:

AF XY:

0.0000381

AC XY:

AN XY:

131112

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.000118

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.0000689

AC:

AN:

1262268

Hom.:

Cov.:

AF XY:

0.0000564

AC XY:

AN XY:

637862

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000920

Gnomad4 OTH exome

AF:

0.0000185

GnomAD4 genome

AF:

0.0000789

AC:

AN:

152000

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74252

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000176

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000131

Hom.:

Bravo

AF:

0.0000756

ExAC

AF:

0.0000414

AC:

EpiCase

AF:

0.000273

EpiControl

AF:

0.0000594

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 23, 2022

This sequence change replaces asparagine, which is neutral and polar, with aspartic acid, which is acidic and polar, at codon 553 of the GP6 protein (p.Asn553Asp). This variant is present in population databases (rs201681535, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with GP6-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.77

CADD

Benign

DANN

Uncertain

0.98

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.96

FATHMM_MKL

Benign

0.012

M_CAP

Uncertain

0.093

MetaRNN

Benign

0.096

MetaSVM

Benign

-0.90

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Uncertain

0.55

PROVEAN

Benign

0.080

REVEL

Benign

0.055

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

0.59

Vest4

0.11

MutPred

0.27

Gain of relative solvent accessibility (P = 0.0166);

MVP

0.14

MPC

0.40

ClinPred

0.10

GERP RS

0.14

gMVP

0.0083

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