Genetic Variant LPA:p.Val1709Asp (chr6-160548507-A-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_005577.4(LPA):c.5126T>A(p.Val1709Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000143 in 1,613,958 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00072 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000083 ( 0 hom. )

Consequence

LPA
NM_005577.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.349

Variant links:

Genes affected

LPA (HGNC:6667): (lipoprotein(a)) The protein encoded by this gene is a serine proteinase that inhibits the activity of tissue-type plasminogen activator I. The encoded protein constitutes a substantial portion of lipoprotein(a) and is proteolytically cleaved, resulting in fragments that attach to atherosclerotic lesions and promote thrombogenesis. Elevated plasma levels of this protein are linked to atherosclerosis. Depending on the individual, the encoded protein contains 2-43 copies of kringle-type domains. The allele represented here contains 15 copies of the kringle-type repeats and corresponds to that found in the reference genome sequence. [provided by RefSeq, Dec 2009]

LPA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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=0.016920537).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LPA	NM_005577.4 link	c.5126T>A	p.Val1709Asp	missense_variant	Exon 31 of 39	ENST00000316300.10	NP_005568.2	P08519

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
LPA	ENST00000316300.10 link	c.5126T>A	p.Val1709Asp	missense_variant	Exon 31 of 39	1	NM_005577.4	ENSP00000321334.6		P08519

Frequencies

GnomAD3 genomes

AF:

0.000723

AC:

110

AN:

152058

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00244

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000168

AC:

AN:

250288

Hom.:

AF XY:

0.000103

AC XY:

AN XY:

135708

show subpopulations

Gnomad AFR exome

AF:

0.00219

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.0000828

AC:

121

AN:

1461782

Hom.:

Cov.:

AF XY:

0.0000674

AC XY:

AN XY:

727184

show subpopulations

Gnomad4 AFR exome

AF:

0.00281

Gnomad4 AMR exome

AF:

0.000179

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.000182

GnomAD4 genome

AF:

0.000723

AC:

110

AN:

152176

Hom.:

Cov.:

AF XY:

0.000712

AC XY:

AN XY:

74412

show subpopulations

Gnomad4 AFR

AF:

0.00243

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000225

Hom.:

Bravo

AF:

0.000982

ESP6500AA

AF:

0.00114

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000124

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 11, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.5126T>A (p.V1709D) alteration is located in exon 32 (coding exon 31) of the LPA gene. This alteration results from a T to A substitution at nucleotide position 5126, causing the valine (V) at amino acid position 1709 to be replaced by an aspartic acid (D). 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

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.40

CADD

Benign

3.9

DANN

Benign

0.91

Eigen

Benign

-0.43

Eigen_PC

Benign

-0.73

FATHMM_MKL

Benign

0.025

M_CAP

Benign

0.0095

MetaRNN

Benign

0.017

MetaSVM

Benign

-0.96

PrimateAI

Benign

0.33

PROVEAN

Uncertain

-2.6

REVEL

Benign

0.16

Sift

Uncertain

0.0090

Sift4G

Uncertain

0.028

Vest4

0.30

MVP

0.20

ClinPred

0.071

GERP RS

-0.30

gMVP

0.80

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