chr3-146071125-G-C

Position:

• chr3-146071125-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1 PM2

The NM_182943.3(PLOD2):​c.2038C>G​(p.Arg680Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000659 in 151,758 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R680Q) has been classified as Uncertain significance.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
• Consequence: PLOD2 NM_182943.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.77

Genes affected

PLOD2 (HGNC:9082): (procollagen-lysine,2-oxoglutarate 5-dioxygenase 2) The protein encoded by this gene is a membrane-bound homodimeric enzyme that is localized to the cisternae of the rough 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 VIB have deficiencies in lysyl hydroxylase activity. Mutations in the coding region of this gene are associated with Bruck syndrome. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM1: In a domain Fe2OG dioxygenase (size 93) in uniprot entity PLOD2_HUMAN there are 4 pathogenic changes around while only 1 benign (80%) in NM_182943.3
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PLOD2	NM_182943.3	c.2038C>G	p.Arg680Gly	missense_variant	19/20	ENST00000282903.10
PLOD2	NM_000935.3	c.1975C>G	p.Arg659Gly	missense_variant	18/19
PLOD2	XM_017006625.3	c.1762C>G	p.Arg588Gly	missense_variant	20/21
PLOD2	XM_047448319.1	c.1762C>G	p.Arg588Gly	missense_variant	19/20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PLOD2	ENST00000282903.10	c.2038C>G	p.Arg680Gly	missense_variant	19/20	1	NM_182943.3	P3
	ENST00000480247.1	n.337+2947G>C		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes AF: 0.00000659 AC: 1 AN: 151758 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.000479

GnomAD4 exome Cov.: 32

GnomAD4 genome AF: 0.00000659 AC: 1 AN: 151758 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74078

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

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: 0.000479

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.48
BayesDel_addAF	Benign	0.011	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.071	.;.;T;T
Eigen	Benign	-0.51
Eigen_PC	Benign	-0.50
FATHMM_MKL	Benign	0.57	D
LIST_S2	Uncertain	0.95	D;D;D;D
M_CAP	Benign	0.052	D
MetaRNN	Uncertain	0.57	D;D;D;D
MetaSVM	Benign	-0.62	T
MutationAssessor	Benign	-0.080	.;.;N;.
MutationTaster	Benign	0.77	D;D;D;D
PrimateAI	Uncertain	0.69	T
PROVEAN	Uncertain	-2.7	D;D;D;D
REVEL	Uncertain	0.51
Sift	Benign	0.14	T;T;T;T
Sift4G	Benign	0.15	T;T;T;T
Polyphen		0.71, 0.94, 0.96	.;P;P;D
Vest4		0.62
MutPred		0.69		.;.;Gain of glycosylation at S662 (P = 0.0207);.;
MVP		0.72
MPC		0.20
ClinPred		0.88	D
GERP RS		0.52
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.25
gMVP		0.84

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs780770356; hg19: chr3-145788912;