1-154925258-G-T

Position:

• chr1-154925258-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_006556.4(PMVK):​c.450C>A​(p.Asp150Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: PMVK NM_006556.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.55

Genes affected

PMVK (HGNC:9141): (phosphomevalonate kinase) This gene encodes a peroxisomal enzyme that is a member of the galactokinase, homoserine kinase, mevalonate kinase, and phosphomevalonate kinase (GHMP) family of ATP-dependent enzymes. The encoded protein catalyzes the conversion of mevalonate 5-phosphate to mevalonate 5-diphosphate, which is the fifth step in the mevalonate pathway of isoprenoid biosynthesis. Mutations in this gene are linked to certain types of porokeratosis including disseminated superficial porokeratosis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PMVK	NM_006556.4	c.450C>A	p.Asp150Glu	missense_variant	5/5	ENST00000368467.4
PMVK	NM_001323011.3	c.408C>A	p.Asp136Glu	missense_variant	5/5
PMVK	NM_001323012.3	c.225C>A	p.Asp75Glu	missense_variant	5/5
PMVK	NM_001348696.2	c.225C>A	p.Asp75Glu	missense_variant	5/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PMVK	ENST00000368467.4	c.450C>A	p.Asp150Glu	missense_variant	5/5	1	NM_006556.4	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 05, 2022

The c.450C>A (p.D150E) alteration is located in exon 5 (coding exon 5) of the PMVK gene. This alteration results from a C to A substitution at nucleotide position 450, causing the aspartic acid (D) at amino acid position 150 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	Pathogenic	0.90
BayesDel_addAF	Uncertain	0.049	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	4.7
DANN	Benign	0.97
DEOGEN2	Uncertain	0.54	D
Eigen	Benign	-0.82
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.099	N
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.047	D
MetaRNN	Uncertain	0.72	D
MetaSVM	Benign	-0.30	T
MutationAssessor	Pathogenic	3.2	M
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.56	T
PROVEAN	Uncertain	-3.8	D
REVEL	Uncertain	0.45
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.71
MutPred		0.50		Gain of disorder (P = 0.1421);
MVP		0.26
MPC		1.2
ClinPred		0.99	D
GERP RS		-7.9
Varity_R		0.78
gMVP		0.65

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-154897734;