NM_005609.4(PYGM):c.1315C>T (p.Arg439Cys) AND Glycogen storage disease, type V

This record was updated by the submitter. Please see the current version.

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Aug 7, 2022
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:: RCV002543428.1

Allele description

NM_005609.4(PYGM):c.1315C>T (p.Arg439Cys)

Gene:

PYGM:glycogen phosphorylase, muscle associated [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

11q13.1

Genomic location:

Preferred name:

NM_005609.4(PYGM):c.1315C>T (p.Arg439Cys)

HGVS:

NC_000011.10:g.64753607G>A
NG_013018.1:g.12109C>T
NM_001164716.1:c.1051C>T
NM_005609.4:c.1315C>TMANE SELECT
NP_001158188.1:p.Arg351Cys
NP_005600.1:p.Arg439Cys
NC_000011.9:g.64521079G>A

Protein change:

R351C

Links:

dbSNP: rs758774720

NCBI 1000 Genomes Browser:

rs758774720

Molecular consequence:

NM_001164716.1:c.1051C>T - missense variant - [Sequence Ontology: SO:0001583]
NM_005609.4:c.1315C>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Glycogen storage disease, type V (GSD5)
Synonyms:: Glycogen storage disease type 5; GSD 5; McArdle disease; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0009293; MedGen: C0017924; Orphanet: 368; OMIM: 232600

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV003470818	Invitae	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Aug 7, 2022)	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

SCV003470818

Invitae

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Aug 7, 2022)

germline

clinical testing

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

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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 Invitae, SCV003470818.1

#	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 arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 439 of the PYGM protein (p.Arg439Cys). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with PYGM-related conditions. ClinVar contains an entry for this variant (Variation ID: 1344575). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Not Available"). 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: Sep 1, 2024

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