Genetic Variant PDILT:p.His492Arg (chr16-20360599-T-C) – 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_174924.2(PDILT):c.1475A>G(p.His492Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

PDILT
NM_174924.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.50

Variant links:

Genes affected

PDILT (HGNC:27338): (protein disulfide isomerase like, testis expressed) 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 has an N-terminal ER-signal sequence, two thioredoxin (TRX) domains with non-classical Ser-Lys-Gln-Ser and Ser-Lys-Lys-Cys motifs, respectively, two TRX-like domains, and a C-terminal ER-retention sequence. The protein lacks oxidoreductase activity in vitro and probably functions as a chaperone. This gene's expression appears to be limited to the testis. [provided by RefSeq, Dec 2016]

PDILT links:

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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=0.09441215).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PDILT	NM_174924.2 link	c.1475A>G	p.His492Arg	missense_variant	Exon 11 of 12	ENST00000302451.9	NP_777584.1	Q8N807
PDILT	XM_011545766.4 link	c.653A>G	p.His218Arg	missense_variant	Exon 7 of 8		XP_011544068.1
PDILT	XM_011545765.2 link	c.*98A>G		3_prime_UTR_variant	Exon 10 of 10		XP_011544067.1
PDILT	XR_950754.2 link	n.1545A>G		non_coding_transcript_exon_variant	Exon 10 of 11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PDILT	ENST00000302451.9 link	c.1475A>G	p.His492Arg	missense_variant	Exon 11 of 12	1	NM_174924.2	ENSP00000305465.4		Q8N807

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000795

AC:

AN:

251440

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135886

show subpopulations

Gnomad AFR exome

AF:

0.000123

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461806

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

Jan 25, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1475A>G (p.H492R) alteration is located in exon 11 (coding exon 10) of the PDILT gene. This alteration results from a A to G substitution at nucleotide position 1475, causing the histidine (H) at amino acid position 492 to be replaced by an arginine (R). 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

0.076

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.62

CADD

Benign

DANN

Benign

0.78

DEOGEN2

Benign

0.00085

Eigen

Benign

-0.31

Eigen_PC

Benign

-0.24

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.59

M_CAP

Benign

0.0028

MetaRNN

Benign

0.094

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.95

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.23

REVEL

Benign

0.083

Sift

Benign

0.15

Sift4G

Benign

0.077

Polyphen

0.0030

Vest4

0.20

MutPred

0.50

Gain of phosphorylation at S491 (P = 0.0911);

MVP

0.35

MPC

0.092

ClinPred

0.078

GERP RS

4.6

Varity_R

0.062

gMVP

0.40

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