rs576907642

chr1-11964742-A-G

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_000302.4(PLOD1):c.1427A>G(p.Lys476Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000421 in 1,613,766 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. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. K476K) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

PLOD1
NM_000302.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 1.53

Variant links:

Genes affected

PLOD1 (HGNC:9081): (procollagen-lysine,2-oxoglutarate 5-dioxygenase 1) Lysyl hydroxylase is a membrane-bound homodimeric protein localized to the cisternae of the endoplasmic reticulum. The enzyme (cofactors iron and ascorbate) catalyzes the hydroxylation of lysyl residues in collagen-like peptides. The resultant hydroxylysyl groups are attachment sites for carbohydrates in collagen and thus are critical for the stability of intermolecular crosslinks. Some patients with Ehlers-Danlos syndrome type VI have deficiencies in lysyl hydroxylase activity. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

PLOD1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.019618362).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000243 (37/152374) while in subpopulation AFR AF= 0.000841 (35/41594). AF 95% confidence interval is 0.000621. There are 0 homozygotes in gnomad4. There are 18 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PLOD1	NM_000302.4 linkuse as main transcript	c.1427A>G	p.Lys476Arg	missense_variant	13/19	ENST00000196061.5
PLOD1	NM_001316320.2 linkuse as main transcript	c.1568A>G	p.Lys523Arg	missense_variant	14/20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PLOD1	ENST00000196061.5 linkuse as main transcript	c.1427A>G	p.Lys476Arg	missense_variant	13/19	1	NM_000302.4	P1	Q02809-1
PLOD1	ENST00000470133.1 linkuse as main transcript	n.41A>G		non_coding_transcript_exon_variant	1/3	3
PLOD1	ENST00000491536.5 linkuse as main transcript	n.55A>G		non_coding_transcript_exon_variant	1/5	3

Frequencies

GnomAD3 genomes

AF:

0.000243

AC:

AN:

152256

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000844

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000915

AC:

AN:

251264

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135884

show subpopulations

Gnomad AFR exome

AF:

0.00111

Gnomad AMR exome

AF:

0.000116

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:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000212

AC:

AN:

1461392

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

726998

show subpopulations

Gnomad4 AFR exome

AF:

0.000657

Gnomad4 AMR exome

AF:

0.000112

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000243

AC:

AN:

152374

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74508

show subpopulations

Gnomad4 AFR

AF:

0.000841

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.000287

ExAC

AF:

0.0000741

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Ehlers-Danlos syndrome, kyphoscoliotic type 1

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	May 13, 2022	This sequence change replaces lysine, which is basic and polar, with arginine, which is basic and polar, at codon 476 of the PLOD1 protein (p.Lys476Arg). This variant is present in population databases (rs576907642, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with PLOD1-related conditions. ClinVar contains an entry for this variant (Variation ID: 498773). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The arginine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Oct 31, 2018	- -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Aug 24, 2023

- -

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 19, 2021

The p.K476R variant (also known as c.1427A>G), located in coding exon 13 of the PLOD1 gene, results from an A to G substitution at nucleotide position 1427. The lysine at codon 476 is replaced by arginine, an amino acid with highly similar properties. This amino acid position is not well conserved in available vertebrate species, and arginine is the reference amino acid in other vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Ehlers-Danlos syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

Dec 01, 2019

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Jan 05, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.073

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.53

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.062

Eigen

Benign

-0.33

Eigen_PC

Benign

-0.21

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.75

M_CAP

Benign

0.0081

MetaRNN

Benign

0.020

MetaSVM

Benign

-0.95

MutationAssessor

Benign

0.82

MutationTaster

Benign

0.79

N;N

PrimateAI

Benign

0.41

PROVEAN

Benign

-1.0

REVEL

Benign

0.058

Sift

Benign

0.19

Sift4G

Benign

0.34

Polyphen

0.0010

Vest4

0.23

MVP

0.75

MPC

0.17

ClinPred

0.018

GERP RS

2.7

Varity_R

0.030

gMVP

0.43

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