Genetic Variant MVD:p.Leu354Val (chr16-88653362-G-C) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_002461.3(MVD):c.1060C>G(p.Leu354Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000486 in 1,599,396 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00022 ( 0 hom., cov: 34)

Exomes 𝑓: 0.00051 ( 1 hom. )

Consequence

MVD
NM_002461.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.07

Publications

0 publications found

Variant links:

Genes affected

MVD (HGNC:7529): (mevalonate diphosphate decarboxylase) The enzyme mevalonate pyrophosphate decarboxylase catalyzes the conversion of mevalonate pyrophosphate into isopentenyl pyrophosphate in one of the early steps in cholesterol biosynthesis. It decarboxylates and dehydrates its substrate while hydrolyzing ATP. [provided by RefSeq, Jul 2008]

MVD Gene-Disease associations (from GenCC):

porokeratosis 7, multiple types
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P
disseminated superficial actinic porokeratosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MVD links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.035601825).

BS2

High AC in GnomAd4 at 33 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MVD	NM_002461.3 link	c.1060C>G	p.Leu354Val	missense_variant	Exon 9 of 10	ENST00000301012.8	NP_002452.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MVD	ENST00000301012.8 link	c.1060C>G	p.Leu354Val	missense_variant	Exon 9 of 10	1	NM_002461.3	ENSP00000301012.3	P53602
MVD	ENST00000565149.5 link	n.1619C>G		non_coding_transcript_exon_variant	Exon 5 of 6	1
MVD	ENST00000561895.1 link	n.341C>G		non_coding_transcript_exon_variant	Exon 2 of 3	2
MVD	ENST00000562981.1 link	n.223C>G		non_coding_transcript_exon_variant	Exon 1 of 2	2

Frequencies

GnomAD3 genomes

AF:

0.000217

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000723

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:

0.000282

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000397

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000215

AC:

AN:

233068

AF XY:

0.000173

show subpopulations

Gnomad AFR exome

AF:

0.0000652

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000236

Gnomad NFE exome

AF:

0.000382

Gnomad OTH exome

AF:

0.000532

GnomAD4 exome

AF:

0.000515

AC:

745

AN:

1447044

Hom.:

Cov.:

AF XY:

0.000455

AC XY:

328

AN XY:

720174

show subpopulations

African (AFR)

AF:

0.000124

AC:

AN:

32210

American (AMR)

AF:

0.00

AC:

AN:

39608

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25522

East Asian (EAS)

AF:

0.00

AC:

AN:

39476

South Asian (SAS)

AF:

0.00

AC:

AN:

84224

European-Finnish (FIN)

AF:

0.000268

AC:

AN:

52162

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5724

European-Non Finnish (NFE)

AF:

0.000627

AC:

695

AN:

1108336

Other (OTH)

AF:

0.000535

AC:

AN:

59782

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.457

Heterozygous variant carriers

115

154

192

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000217

AC:

AN:

152352

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74490

show subpopulations

African (AFR)

AF:

0.0000721

AC:

AN:

41590

American (AMR)

AF:

0.00

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.000282

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000397

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000268

Hom.:

Bravo

AF:

0.000174

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000173

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 18, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1060C>G (p.L354V) alteration is located in exon 9 (coding exon 9) of the MVD gene. This alteration results from a C to G substitution at nucleotide position 1060, causing the leucine (L) at amino acid position 354 to be replaced by a valine (V). 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

Benign

0.14

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.60

CADD

Benign

(source)

DANN

Benign

0.61

DEOGEN2

Benign

0.16

Eigen

Benign

-0.78

Eigen_PC

Benign

-0.76

FATHMM_MKL

Benign

0.73

LIST_S2

Benign

0.64

M_CAP

Benign

0.011

MetaRNN

Benign

0.036

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.9

PhyloP100

2.1

PrimateAI

Uncertain

0.50

PROVEAN

Benign

-1.1

REVEL

Benign

0.064

Sift

Benign

0.23

Sift4G

Benign

0.40

Polyphen

0.0

Vest4

0.20

MVP

0.14

MPC

0.053

ClinPred

0.029

GERP RS

0.82

Varity_R

0.086

gMVP

0.63

Mutation Taster

=80/20

polymorphism

(source)

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

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16-88653362-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over