NM_004484.4:c.394A>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_ModerateBP6_ModerateBS1BS2

The NM_004484.4(GPC3):c.394A>G(p.Asn132Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000584 in 1,096,547 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 24 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N132S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 22)

Exomes 𝑓: 0.000058 ( 0 hom. 24 hem. )

Consequence

GPC3
NM_004484.4 missense

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 2.05

Publications

2 publications found

Variant links:

Genes affected

GPC3 (HGNC:4451): (glypican 3) Cell surface heparan sulfate proteoglycans are composed of a membrane-associated protein core substituted with a variable number of heparan sulfate chains. Members of the glypican-related integral membrane proteoglycan family (GRIPS) contain a core protein anchored to the cytoplasmic membrane via a glycosyl phosphatidylinositol linkage. These proteins may play a role in the control of cell division and growth regulation. The protein encoded by this gene can bind to and inhibit the dipeptidyl peptidase activity of CD26, and it can induce apoptosis in certain cell types. Deletion mutations in this gene are associated with Simpson-Golabi-Behmel syndrome, also known as Simpson dysmorphia syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

GPC3 Gene-Disease associations (from GenCC):

Simpson-Golabi-Behmel syndrome
Inheritance: XL Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
Simpson-Golabi-Behmel syndrome type 1
Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics

GPC3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.24746102).

BP6

Variant X-133754120-T-C is Benign according to our data. Variant chrX-133754120-T-C is described in ClinVar as Benign. ClinVar VariationId is 579381.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.0000584 (64/1096547) while in subpopulation NFE AF = 0.0000737 (62/840760). AF 95% confidence interval is 0.0000587. There are 0 homozygotes in GnomAdExome4. There are 24 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Hemizygotes in GnomAdExome4 at 24 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GPC3	NM_004484.4 link	c.394A>G	p.Asn132Asp	missense_variant	Exon 3 of 8	ENST00000370818.8	NP_004475.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GPC3	ENST00000370818.8 link	c.394A>G	p.Asn132Asp	missense_variant	Exon 3 of 8	1	NM_004484.4	ENSP00000359854.3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000440

AC:

AN:

181997

AF XY:

0.0000747

show subpopulations

Gnomad AFR exome

AF:

0.000152

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000743

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000584

AC:

AN:

1096547

Hom.:

Cov.:

AF XY:

0.0000663

AC XY:

AN XY:

361943

show subpopulations

African (AFR)

AF:

0.0000379

AC:

AN:

26361

American (AMR)

AF:

0.00

AC:

AN:

35181

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19368

East Asian (EAS)

AF:

0.00

AC:

AN:

30200

South Asian (SAS)

AF:

0.00

AC:

AN:

54059

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40445

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4126

European-Non Finnish (NFE)

AF:

0.0000737

AC:

AN:

840760

Other (OTH)

AF:

0.0000217

AC:

AN:

46047

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

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

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000151

ESP6500AA

AF:

0.000261

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000412

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000237

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Wilms tumor 1

Benign:1

Oct 23, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.48

BayesDel_noAF

Benign

-0.74

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.44

T;.;.

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.82

T;T;T

M_CAP

Benign

0.022

MetaRNN

Benign

0.25

T;T;T

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.2

L;L;.

PhyloP100

2.0

PrimateAI

Uncertain

0.63

PROVEAN

Uncertain

-2.7

D;D;.

REVEL

Benign

0.15

Sift

Benign

0.070

T;T;.

Sift4G

Uncertain

0.047

D;D;T

Polyphen

0.24

B;.;.

Vest4

0.35

MVP

0.68

MPC

0.23

ClinPred

0.078

GERP RS

5.3

PromoterAI

0.0068

Neutral

(source)

Varity_R

0.47

gMVP

0.43

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over