Genetic Variant PGAP6:p.Trp747Cys (chr16-372062-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_021259.3(PGAP6):c.2241G>C(p.Trp747Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000267 in 1,612,522 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 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

PGAP6
NM_021259.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.01

Variant links:

Genes affected

PGAP6 (HGNC:17205): (post-GPI attachment to proteins 6) Predicted to enable phospholipase A2 activity. Located in extracellular exosome and lysosomal membrane. [provided by Alliance of Genome Resources, Apr 2022]

PGAP6 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=0.19916525).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PGAP6	NM_021259.3 link	c.2241G>C	p.Trp747Cys	missense_variant	Exon 13 of 13	ENST00000431232.7	NP_067082.2	Q9HCN3
PGAP6	XM_047434413.1 link	c.1662G>C	p.Trp554Cys	missense_variant	Exon 14 of 14		XP_047290369.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PGAP6	ENST00000431232.7 link	c.2241G>C	p.Trp747Cys	missense_variant	Exon 13 of 13	1	NM_021259.3	ENSP00000401338.2	Q9HCN3
PGAP6	ENST00000250930.7 link	c.1662G>C	p.Trp554Cys	missense_variant	Exon 13 of 13	2		ENSP00000250930.3	K4DI83
PGAP6	ENST00000424078.5 link	c.642G>C	p.Trp214Cys	missense_variant	Exon 4 of 4	3		ENSP00000397620.1	H0Y5B2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152142

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:

0.000829

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000520

AC:

AN:

249892

Hom.:

AF XY:

0.0000811

AC XY:

AN XY:

135580

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:

0.000425

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000267

AC:

AN:

1460380

Hom.:

Cov.:

AF XY:

0.0000427

AC XY:

AN XY:

726496

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:

0.000429

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74298

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:

0.000829

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 17, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2241G>C (p.W747C) alteration is located in exon 13 (coding exon 13) of the TMEM8A gene. This alteration results from a G to C substitution at nucleotide position 2241, causing the tryptophan (W) at amino acid position 747 to be replaced by a cysteine (C). 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

Uncertain

0.39

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.37

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.12

T;.

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.27

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.76

T;T

M_CAP

Uncertain

0.088

MetaRNN

Benign

0.20

T;T

MetaSVM

Benign

-0.83

MutationAssessor

Uncertain

2.5

M;.

PrimateAI

Uncertain

0.50

PROVEAN

Pathogenic

-4.6

D;D

REVEL

Benign

0.17

Sift

Uncertain

0.023

D;D

Sift4G

Uncertain

0.011

D;D

Polyphen

1.0

D;.

Vest4

0.28

MutPred

0.35

Gain of catalytic residue at P746 (P = 0.0058);.;

MVP

0.31

MPC

0.085

ClinPred

0.81

GERP RS

3.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.45

gMVP

0.82

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