Genetic Variant GPC2:p.Ser423Leu (chr7-100171581-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

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

The NM_152742.3(GPC2):c.1268C>T(p.Ser423Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000789 in 1,507,792 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 0.000033 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000084 ( 0 hom. )

Consequence

GPC2
NM_152742.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.56

Variant links:

Genes affected

GPC2 (HGNC:4450): (glypican 2) Predicted to be involved in several processes, including positive regulation of neuron projection development; regulation of protein localization to membrane; and smoothened signaling pathway. Located in endoplasmic reticulum. [provided by Alliance of Genome Resources, Apr 2022]

GPC2 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=0.35614288).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GPC2	NM_152742.3 link	c.1268C>T	p.Ser423Leu	missense_variant	Exon 8 of 10	ENST00000292377.4	NP_689955.1	Q8N158

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
GPC2	ENST00000292377.4 link	c.1268C>T	p.Ser423Leu	missense_variant	Exon 8 of 10	1	NM_152742.3	ENSP00000292377.2	Q8N158
GPC2	ENST00000486702.1 link	n.377C>T		non_coding_transcript_exon_variant	Exon 3 of 4	3
GPC2	ENST00000490629.5 link	n.*70C>T		downstream_gene_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000329

AC:

AN:

152026

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000589

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000255

AC:

AN:

117546

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

67560

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:

0.0000574

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000841

AC:

114

AN:

1355766

Hom.:

Cov.:

AF XY:

0.0000700

AC XY:

AN XY:

671146

show subpopulations

Gnomad4 AFR exome

AF:

0.0000355

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:

0.000103

Gnomad4 OTH exome

AF:

0.0000534

GnomAD4 genome

AF:

0.0000329

AC:

AN:

152026

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74280

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.0000589

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000378

ExAC

AF:

0.00000920

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 12, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1268C>T (p.S423L) alteration is located in exon 8 (coding exon 8) of the GPC2 gene. This alteration results from a C to T substitution at nucleotide position 1268, causing the serine (S) at amino acid position 423 to be replaced by a leucine (L). 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

0.15

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.45

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.30

Eigen

Benign

-0.0034

Eigen_PC

Benign

-0.039

FATHMM_MKL

Benign

0.55

LIST_S2

Benign

0.65

M_CAP

Pathogenic

0.39

MetaRNN

Benign

0.36

MetaSVM

Benign

-0.90

MutationAssessor

Uncertain

2.6

PrimateAI

Pathogenic

0.84

PROVEAN

Uncertain

-2.5

REVEL

Benign

0.18

Sift

Uncertain

0.028

Sift4G

Benign

0.14

Polyphen

0.82

Vest4

0.20

MutPred

0.42

Loss of disorder (P = 0.0302);

MVP

0.20

MPC

1.5

ClinPred

0.22

GERP RS

4.0

Varity_R

0.17

gMVP

0.33

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