NM_000302.4:c.109G>A

Variant names:

Variant summary

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

The NM_000302.4(PLOD1):c.109G>A(p.Glu37Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000644 in 1,613,806 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000066 ( 1 hom. )

Consequence

PLOD1
NM_000302.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:4B:1

Conservation

PhyloP100: 7.93

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=0.029758036).

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0000526 (8/152224) while in subpopulation EAS AF= 0.00155 (8/5178). AF 95% confidence interval is 0.000768. There are 0 homozygotes in gnomad4. There are 6 alleles in male gnomad4 subpopulation. Median coverage is 32. 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 rank	MANE	Protein	UniProt
PLOD1	NM_000302.4 link	c.109G>A	p.Glu37Lys	missense_variant	Exon 2 of 19	ENST00000196061.5	NP_000293.2	Q02809-1
PLOD1	NM_001316320.2 link	c.250G>A	p.Glu84Lys	missense_variant	Exon 3 of 20		NP_001303249.1	Q02809-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLOD1	ENST00000196061.5 link	c.109G>A	p.Glu37Lys	missense_variant	Exon 2 of 19	1	NM_000302.4	ENSP00000196061.4		Q02809-1

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152106

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00154

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000167

AC:

AN:

251492

Hom.:

AF XY:

0.000140

AC XY:

AN XY:

135920

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00196

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000651

GnomAD4 exome

AF:

0.0000657

AC:

AN:

1461582

Hom.:

Cov.:

AF XY:

0.0000619

AC XY:

AN XY:

727114

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000907

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000135

Gnomad4 OTH exome

AF:

0.000696

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.0000806

AC XY:

AN XY:

74420

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00154

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000272

Hom.:

Bravo

AF:

0.000121

ExAC

AF:

0.000115

AC:

Asia WGS

AF:

0.00260

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Ehlers-Danlos syndrome, kyphoscoliotic type 1

Uncertain:2Benign:1

Oct 07, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 12, 2019

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Keratoconus

Pathogenic:1

Aug 04, 2023

Refractive Surgery Department, Bright Eye Hospital

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: clinical testing

In this study, a heterozygous PLOD1 mutation c.109G>A was detected in family 1, which is located in exon 2 and causes a p.Glu37Lys amino acid change. The conformational alteration of the protein caused by this variant may disturb the crosslinking of corneal fibrils. In addition, PPI network showed the interaction between PLOD1 and COL1A1 or PLOD1 and COL5A1. Therefore, misfolding and/or aggregate formation of PLOD1 likely cause the development of KC by disturbing corneal crosslinking. To date, this is the first report to identify a PLOD1 mutation in a family with KC. -

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Jan 30, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.109G>A (p.E37K) alteration is located in exon 2 (coding exon 2) of the PLOD1 gene. This alteration results from a G to A substitution at nucleotide position 109, causing the glutamic acid (E) at amino acid position 37 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

May 06, 2020

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.30

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.077

.;T;T

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.92

D;D;D

M_CAP

Benign

0.017

MetaRNN

Benign

0.030

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.6

.;.;L

PrimateAI

Uncertain

0.69

PROVEAN

Uncertain

-3.5

D;D;D

REVEL

Benign

0.17

Sift

Benign

0.17

T;D;T

Sift4G

Benign

0.085

T;T;T

Polyphen

0.96

.;.;D

Vest4

0.65

MutPred

0.34

Gain of MoRF binding (P = 0.0073);.;.;

MVP

0.75

MPC

0.72

ClinPred

0.16

GERP RS

4.8

Varity_R

0.23

gMVP

0.74

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