NM_000431.4(MVK):c.64G>C (p.Val22Leu) AND multiple conditions

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Aug 17, 2021
Review status:: 1 star out of maximum of 4 stars
criteria provided, single submitter

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV001969068.3

Allele description [Variation Report for NM_000431.4(MVK):c.64G>C (p.Val22Leu)]

NM_000431.4(MVK):c.64G>C (p.Val22Leu)

Gene:

MVK:mevalonate kinase [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

12q24.11

Genomic location:

Preferred name:

NM_000431.4(MVK):c.64G>C (p.Val22Leu)

HGVS:

NC_000012.12:g.109574886G>C
NG_007096.1:g.3612C>G
NG_007702.1:g.6192G>C
NM_000431.4:c.64G>CMANE SELECT
NM_001114185.3:c.64G>C
NM_001301182.2:c.64G>C
NP_000422.1:p.Val22Leu
NP_001107657.1:p.Val22Leu
NP_001288111.1:p.Val22Leu
LRG_156:g.6192G>C
NC_000012.11:g.110012691G>C

Protein change:

V22L

Links:

dbSNP: rs1217259118

NCBI 1000 Genomes Browser:

rs1217259118

Molecular consequence:

NM_000431.4:c.64G>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001114185.3:c.64G>C - missense variant - [Sequence Ontology: SO:0001583]
NM_001301182.2:c.64G>C - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Mevalonic aciduria (MEVA)
Identifiers:: MONDO: MONDO:0012481; MedGen: C1959626; Orphanet: 29; OMIM: 610377

Name:: Porokeratosis 3, disseminated superficial actinic type (POROK3)
Synonyms:: POROKERATOSIS, DISSEMINATED SUPERFICIAL ACTINIC, 1; POROKERATOSIS 3, MULTIPLE TYPES; POROKERATOSIS 3, MIBELLI TYPE
Identifiers:: MONDO: MONDO:0008293; MedGen: C1867981; OMIM: 175900

Name:: Hyperimmunoglobulin D with periodic fever (HIDS)
Synonyms:: Hyperimmunoglobulinemia D and periodic fever syndrome; Periodic fever Dutch type; Hyperimmunoglobulinemia D; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0009849; MedGen: C0398691; Orphanet: 343; OMIM: 260920

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV002251701	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Aug 17, 2021)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV002251701

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Aug 17, 2021)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002251701.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This sequence change replaces valine with leucine at codon 22 of the MVK protein (p.Val22Leu). The valine residue is highly conserved and there is a small physicochemical difference between valine and leucine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with MVK-related conditions. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt MVK protein function. 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.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Oct 8, 2024

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