3-123102794-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_006810.4(PDIA5):c.385A>G(p.Lys129Glu) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000698 in 1,605,540 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000099 (0 hom., cov: 35)
  • Exomes 𝑓: 0.000067 (0 hom.)
• Consequence: PDIA5 NM_006810.4 missense, splice_region
• Scores: Splicing: ADA: 0.08831
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.64

Genes affected

PDIA5 (HGNC:24811): (protein disulfide isomerase family A member 5) 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, three catalytically active thioredoxin (TRX) domains, a TRX-like domain, and a C-terminal ER-retention sequence. The N-terminal TRX-like domain is the primary binding site for the major ER chaperone calreticulin and possibly other proteins and substrates as well. Alternative splicing results in multiple protein- and non-protein-coding transcript variants. [provided by RefSeq, Dec 2016]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.052443206).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PDIA5	NM_006810.4	c.385A>G	p.Lys129Glu	missense_variant, splice_region_variant	5/17	ENST00000316218.12
PDIA5	NR_028444.2	n.525A>G		splice_region_variant, non_coding_transcript_exon_variant	5/16
PDIA5	XR_007095629.1	n.525A>G		splice_region_variant, non_coding_transcript_exon_variant	5/14
PDIA5	XR_007095630.1	n.525A>G		splice_region_variant, non_coding_transcript_exon_variant	5/12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PDIA5	ENST00000316218.12	c.385A>G	p.Lys129Glu	missense_variant, splice_region_variant	5/17	1	NM_006810.4	P1
PDIA5	ENST00000489923.5	c.385A>G	p.Lys129Glu	missense_variant, splice_region_variant, NMD_transcript_variant	5/16	1
PDIA5	ENST00000484644.5	c.97A>G	p.Lys33Glu	missense_variant, splice_region_variant	5/6	5
PDIA5	ENST00000495004.1	n.404A>G		splice_region_variant, non_coding_transcript_exon_variant	4/6	3

Frequencies

GnomAD3 genomes AF: 0.0000985 AC: 15 AN: 152264 Hom.: 0 Cov.: 35

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00346

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000139 AC: 35 AN: 251240 Hom.: 0 AF XY: 0.000140 AC XY: 19 AN XY: 135808

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000260

Gnomad ASJ exome AF: 0.00208

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000667 AC: 97 AN: 1453276 Hom.: 0 Cov.: 29 AF XY: 0.0000677 AC XY: 49 AN XY: 723706

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000291

Gnomad4 ASJ exome AF: 0.00219

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000154

Gnomad4 OTH exome AF: 0.000166

GnomAD4 genome AF: 0.0000985 AC: 15 AN: 152264 Hom.: 0 Cov.: 35 AF XY: 0.0000672 AC XY: 5 AN XY: 74394

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00346

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

Alfa AF: 0.000248 Hom.: 0

Bravo AF: 0.000128

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000233 AC: 2

ExAC AF: 0.0000988 AC: 12

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 29, 2021

The c.385A>G (p.K129E) alteration is located in exon 5 (coding exon 5) of the PDIA5 gene. This alteration results from a A to G substitution at nucleotide position 385, causing the lysine (K) at amino acid position 129 to be replaced by a glutamic acid (E). 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	0.50
BayesDel_addAF	Benign	-0.055	T
BayesDel_noAF	Uncertain	-0.010
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Benign	0.067	T;.
Eigen	Uncertain	0.19
Eigen_PC	Uncertain	0.30
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.89	D;D
M_CAP	Benign	0.0090	T
MetaRNN	Benign	0.052	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.4	M;.
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.65	T
PROVEAN	Uncertain	-2.7	D;D
REVEL	Benign	0.27
Sift	Benign	0.10	T;T
Sift4G	Benign	0.15	T;D
Polyphen		0.63	P;.
Vest4		0.78
MVP		0.20
MPC		0.25
ClinPred		0.23	T
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.8
Varity_R		0.79
gMVP		0.47

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.088
dbscSNV1_RF	Benign	0.33
SpliceAI score (max)		0.060		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

Other links and lift over

dbSNP: rs143955217; hg19: chr3-122821641;