Genetic Variant POGLUT2:p.Arg474Gln (chr13-102786302-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_024089.3(POGLUT2):c.1421G>A(p.Arg474Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000386 in 1,613,856 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00040 ( 0 hom. )

Consequence

POGLUT2
NM_024089.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.14

Variant links:

Genes affected

POGLUT2 (HGNC:19350): (protein O-glucosyltransferase 2) This gene encodes a protein product localized to the lumen of the endoplasmic reticulum. As a member of the endoplasmic reticulum protein family the encoded protein contains a Lys-Asp-Glu-Leu or KDEL motif located at the extreme C-terminus which prevents all endoplasmic reticulum resident proteins from being secreted. Proteins carrying this motif are bound by a receptor in the Golgi apparatus so that the receptor-ligand complex returns to the endoplasmic reticulum. A processed non-transcribed pseudogene located in an intron of a sodium transporter gene on chromosome 5 has been defined for this gene. This gene has multiple transcript variants which are predicted to encode distinct isoforms. [provided by RefSeq, Jan 2016]

POGLUT2 links:

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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
POGLUT2	NM_024089.3 link	c.1421G>A	p.Arg474Gln	missense_variant	Exon 9 of 10	ENST00000376004.5	NP_076994.2	Q6UW63
POGLUT2	NM_001318732.2 link	c.764G>A	p.Arg255Gln	missense_variant	Exon 10 of 11		NP_001305661.1	Q6UW63
POGLUT2	XM_047430604.1 link	c.764G>A	p.Arg255Gln	missense_variant	Exon 7 of 8		XP_047286560.1
POGLUT2	XM_005254075.4 link	c.1383+1532G>A		intron_variant	Intron 8 of 8		XP_005254132.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
POGLUT2	ENST00000376004.5 link	c.1421G>A	p.Arg474Gln	missense_variant	Exon 9 of 10	1	NM_024089.3	ENSP00000365172.4		Q6UW63

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152148

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000397

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000322

AC:

AN:

251460

Hom.:

AF XY:

0.000368

AC XY:

AN XY:

135906

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000621

Gnomad FIN exome

AF:

0.000139

Gnomad NFE exome

AF:

0.000431

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000400

AC:

584

AN:

1461590

Hom.:

Cov.:

AF XY:

0.000437

AC XY:

318

AN XY:

727132

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.000134

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000499

Gnomad4 FIN exome

AF:

0.0000562

Gnomad4 NFE exome

AF:

0.000454

Gnomad4 OTH exome

AF:

0.000331

GnomAD4 genome

AF:

0.000256

AC:

AN:

152266

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74448

show subpopulations

Gnomad4 AFR

AF:

0.000168

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000397

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000376

Hom.:

Bravo

AF:

0.000238

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000288

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000709

EpiControl

AF:

0.000948

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 17, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1421G>A (p.R474Q) alteration is located in exon 9 (coding exon 9) of the KDELC1 gene. This alteration results from a G to A substitution at nucleotide position 1421, causing the arginine (R) at amino acid position 474 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

0.18

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.16

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.042

Eigen

Pathogenic

0.74

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.025

MetaRNN

Uncertain

0.48

MetaSVM

Benign

-1.0

PrimateAI

Benign

0.39

PROVEAN

Benign

-1.6

REVEL

Benign

0.22

Sift

Benign

0.19

Sift4G

Benign

0.64

Polyphen

1.0

Vest4

0.85

MVP

0.41

MPC

0.60

ClinPred

0.24

GERP RS

5.6

Varity_R

0.26

gMVP

0.69

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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