rs922588870

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_004484.4(GPC3):​c.1087C>T​(p.Pro363Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000929 in 1,076,427 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P363R) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 24)
Exomes 𝑓: 9.3e-7 ( 0 hom. 0 hem. )

Consequence

GPC3
NM_004484.4 missense

Scores

4
13

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.09

Publications

0 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.24458256).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
GPC3NM_004484.4 linkc.1087C>T p.Pro363Ser missense_variant Exon 4 of 8 ENST00000370818.8 NP_004475.1 P51654-1Q53H15I6QTG3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
GPC3ENST00000370818.8 linkc.1087C>T p.Pro363Ser missense_variant Exon 4 of 8 1 NM_004484.4 ENSP00000359854.3 P51654-1

Frequencies

GnomAD3 genomes
Cov.:
24
GnomAD2 exomes
AF:
0.00000554
AC:
1
AN:
180537
AF XY:
0.00
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 FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000123
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
9.29e-7
AC:
1
AN:
1076427
Hom.:
0
Cov.:
25
AF XY:
0.00
AC XY:
0
AN XY:
344135
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
25999
American (AMR)
AF:
0.00
AC:
0
AN:
34907
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
19194
East Asian (EAS)
AF:
0.00
AC:
0
AN:
30070
South Asian (SAS)
AF:
0.00
AC:
0
AN:
52843
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
40491
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4016
European-Non Finnish (NFE)
AF:
0.00000121
AC:
1
AN:
823527
Other (OTH)
AF:
0.00
AC:
0
AN:
45380
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
24
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000756

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Wilms tumor 1 Uncertain:1
Aug 27, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

ClinVar contains an entry for this variant (Variation ID: 543098). 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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt GPC3 protein function. This variant has not been reported in the literature in individuals affected with GPC3-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 363 of the GPC3 protein (p.Pro363Ser). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.42
BayesDel_addAF
Benign
-0.17
T
BayesDel_noAF
Benign
-0.49
CADD
Benign
22
DANN
Benign
0.90
DEOGEN2
Benign
0.24
T;.;.
FATHMM_MKL
Uncertain
0.89
D
LIST_S2
Uncertain
0.91
D;D;D
M_CAP
Benign
0.023
T
MetaRNN
Benign
0.24
T;T;T
MetaSVM
Benign
-1.0
T
MutationAssessor
Benign
0.64
N;.;.
PhyloP100
5.1
PrimateAI
Uncertain
0.61
T
PROVEAN
Benign
-0.040
N;N;.
REVEL
Benign
0.16
Sift
Benign
0.44
T;T;.
Sift4G
Benign
0.84
T;T;T
Polyphen
0.046
B;.;.
Vest4
0.44
MutPred
0.44
Gain of disorder (P = 0.1139);.;.;
MVP
0.62
MPC
0.21
ClinPred
0.41
T
GERP RS
5.3
Varity_R
0.097
gMVP
0.52
Mutation Taster
=89/11
polymorphism

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

Other links and lift over

dbSNP: rs922588870; hg19: chrX-132834002; API