Genetic Variant GDPD4:p.Arg492Gln (chr11-77227914-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_182833.3(GDPD4):c.1475G>A(p.Arg492Gln) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000192 in 1,610,948 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/23 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

GDPD4
NM_182833.3 missense, splice_region

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0560

Variant links:

Genes affected

GDPD4 (HGNC:24849): (glycerophosphodiester phosphodiesterase domain containing 4) Predicted to enable metal ion binding activity and phosphoric diester hydrolase activity. Predicted to be involved in lipid metabolic process. Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

GDPD4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GDPD4	NM_182833.3 link	c.1475G>A	p.Arg492Gln	missense_variant, splice_region_variant	Exon 16 of 17	ENST00000315938.5	NP_878253.1	Q6W3E5-2
GDPD4	XM_011544834.1 link	c.1553G>A	p.Arg518Gln	missense_variant, splice_region_variant	Exon 16 of 18		XP_011543136.1
GDPD4	XM_047426557.1 link	c.881G>A	p.Arg294Gln	missense_variant, splice_region_variant	Exon 12 of 13		XP_047282513.1
GDPD4	XM_047426558.1 link	c.881G>A	p.Arg294Gln	missense_variant, splice_region_variant	Exon 12 of 13		XP_047282514.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GDPD4	ENST00000315938.5 link	c.1475G>A	p.Arg492Gln	missense_variant, splice_region_variant	Exon 16 of 17	1	NM_182833.3	ENSP00000320815.4		Q6W3E5-2
GDPD4	ENST00000376217.6 link	c.1475G>A	p.Arg492Gln	missense_variant, splice_region_variant	Exon 15 of 17	1		ENSP00000365390.2		Q6W3E5-1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152180

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

251326

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135840

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:

0.0000528

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000171

AC:

AN:

1458768

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

725918

show subpopulations

Gnomad4 AFR exome

AF:

0.000150

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:

0.0000171

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152180

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74352

show subpopulations

Gnomad4 AFR

AF:

0.0000965

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000381

Hom.:

Bravo

AF:

0.0000491

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 06, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1475G>A (p.R492Q) alteration is located in exon 15 (coding exon 14) of the GDPD4 gene. This alteration results from a G to A substitution at nucleotide position 1475, causing the arginine (R) at amino acid position 492 to be replaced by a glutamine (Q). 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

0.087

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.75

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.0012

T;.

Eigen

Benign

-0.90

Eigen_PC

Benign

-0.96

FATHMM_MKL

Benign

0.050

LIST_S2

Benign

0.49

T;T

M_CAP

Benign

0.0023

MetaRNN

Benign

0.058

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

N;N

PrimateAI

Benign

0.22

PROVEAN

Benign

-0.68

N;N

REVEL

Benign

0.048

Sift

Benign

0.36

T;T

Sift4G

Benign

0.54

T;T

Polyphen

0.32

.;B

Vest4

0.19

MVP

0.14

MPC

0.055

ClinPred

0.035

GERP RS

0.91

Varity_R

0.028

gMVP

0.14

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.27

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.27

Position offset: 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