Genetic Variant PDIA2:p.Ala89Thr (chr16-284452-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_006849.4(PDIA2):c.265G>A(p.Ala89Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000163 in 1,598,578 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict 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: 0.000015 ( 0 hom. )

Consequence

PDIA2
NM_006849.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.94

Variant links:

Genes affected

PDIA2 (HGNC:14180): (protein disulfide isomerase family A member 2) This gene encodes a member of the disulfide isomerase (PDI) family of endoplasmic reticulum (ER) proteins that catalyze protein folding and thiol-disulfide interchange reactions. The encoded protein has an N-terminal ER-signal sequence, two catalytically active thioredoxin (TRX) domains, two TRX-like domains and a C-terminal ER-retention sequence. The protein plays a role in the folding of nascent proteins in the endoplasmic reticulum by forming disulfide bonds through its thiol isomerase, oxidase, and reductase activity. The encoded protein also possesses estradiol-binding activity and can modulate intracellular estradiol levels. [provided by RefSeq, Sep 2017]

PDIA2 links:

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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=0.39427534).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PDIA2	NM_006849.4 link	c.265G>A	p.Ala89Thr	missense_variant	Exon 2 of 11	ENST00000219406.11	NP_006840.2	Q13087-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PDIA2	ENST00000219406.11 link	c.265G>A	p.Ala89Thr	missense_variant	Exon 2 of 11	1	NM_006849.4	ENSP00000219406.7		Q13087-1

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000136

AC:

AN:

220314

Hom.:

AF XY:

0.00

AC XY:

AN XY:

119772

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000615

Gnomad SAS exome

AF:

0.0000362

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000184

GnomAD4 exome

AF:

0.0000152

AC:

AN:

1446218

Hom.:

Cov.:

AF XY:

0.0000139

AC XY:

AN XY:

718052

show subpopulations

Gnomad4 AFR exome

AF:

0.0000600

Gnomad4 AMR exome

AF:

0.0000474

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000102

Gnomad4 SAS exome

AF:

0.0000477

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000723

Gnomad4 OTH exome

AF:

0.0000334

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152360

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74504

show subpopulations

Gnomad4 AFR

AF:

0.0000481

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 17, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.265G>A (p.A89T) alteration is located in exon 2 (coding exon 2) of the PDIA2 gene. This alteration results from a G to A substitution at nucleotide position 265, causing the alanine (A) at amino acid position 89 to be replaced by a threonine (T). 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

0.091

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.47

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.012

T;.

Eigen

Benign

0.0045

Eigen_PC

Benign

0.00069

FATHMM_MKL

Benign

0.64

LIST_S2

Benign

0.70

T;T

M_CAP

Uncertain

0.086

MetaRNN

Benign

0.39

T;T

MetaSVM

Benign

-0.83

MutationAssessor

Benign

0.87

L;L

PrimateAI

Benign

0.45

PROVEAN

Benign

-0.78

N;N

REVEL

Benign

0.054

Sift

Benign

0.033

D;D

Sift4G

Uncertain

0.053

T;T

Polyphen

0.30

B;.

Vest4

0.39

MutPred

0.46

Gain of phosphorylation at A89 (P = 0.1676);Gain of phosphorylation at A89 (P = 0.1676);

MVP

0.56

ClinPred

0.27

GERP RS

3.0

Varity_R

0.087

gMVP

0.54

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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