Genetic Variant GPC5:p.Thr91Met (chr13-91448869-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_004466.6(GPC5):c.272C>T(p.Thr91Met) variant causes a missense change. The variant allele was found at a frequency of 0.000268 in 1,613,636 control chromosomes in the GnomAD database, including 1 homozygotes. 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 (★).

Frequency

Genomes: 𝑓 0.00038 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00026 ( 1 hom. )

Consequence

GPC5
NM_004466.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.82

Variant links:

Genes affected

GPC5 (HGNC:4453): (glypican 5) 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. [provided by RefSeq, Jul 2008]

GPC5 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05088228).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GPC5	NM_004466.6 link	c.272C>T	p.Thr91Met	missense_variant	Exon 2 of 8	ENST00000377067.9	NP_004457.1	P78333

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GPC5	ENST00000377067.9 link	c.272C>T	p.Thr91Met	missense_variant	Exon 2 of 8	1	NM_004466.6	ENSP00000366267.3		P78333

Frequencies

GnomAD3 genomes

AF:

0.000381

AC:

AN:

152118

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00125

Gnomad ASJ

AF:

0.00231

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000338

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000355

AC:

AN:

250974

Hom.:

AF XY:

0.000280

AC XY:

AN XY:

135626

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.000609

Gnomad ASJ exome

AF:

0.00367

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000203

Gnomad OTH exome

AF:

0.000981

GnomAD4 exome

AF:

0.000256

AC:

374

AN:

1461400

Hom.:

Cov.:

AF XY:

0.000246

AC XY:

179

AN XY:

726996

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000761

Gnomad4 ASJ exome

AF:

0.00276

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000210

Gnomad4 OTH exome

AF:

0.000464

GnomAD4 genome

AF:

0.000381

AC:

AN:

152236

Hom.:

Cov.:

AF XY:

0.000417

AC XY:

AN XY:

74420

show subpopulations

Gnomad4 AFR

AF:

0.0000963

Gnomad4 AMR

AF:

0.00124

Gnomad4 ASJ

AF:

0.00231

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000338

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000398

Hom.:

Bravo

AF:

0.000412

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000280

AC:

EpiCase

AF:

0.000382

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

Sep 14, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.272C>T (p.T91M) alteration is located in exon 2 (coding exon 2) of the GPC5 gene. This alteration results from a C to T substitution at nucleotide position 272, causing the threonine (T) at amino acid position 91 to be replaced by a methionine (M). 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

0.085

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.31

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.34

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.75

M_CAP

Benign

0.058

MetaRNN

Benign

0.051

MetaSVM

Benign

-0.51

MutationAssessor

Uncertain

2.5

PrimateAI

Benign

0.36

PROVEAN

Benign

-2.2

REVEL

Benign

0.26

Sift

Uncertain

0.0050

Sift4G

Uncertain

0.0080

Polyphen

1.0

Vest4

0.47

MVP

0.53

MPC

0.24

ClinPred

0.076

GERP RS

5.5

Varity_R

0.12

gMVP

0.52

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