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NM_000252.3(MTM1):c.944A>G (p.His315Arg) AND Severe X-linked myotubular myopathy

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Aug 29, 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:
RCV002037305.3

Allele description [Variation Report for NM_000252.3(MTM1):c.944A>G (p.His315Arg)]

NM_000252.3(MTM1):c.944A>G (p.His315Arg)

Gene:
MTM1:myotubularin 1 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
Xq28
Genomic location:
Preferred name:
NM_000252.3(MTM1):c.944A>G (p.His315Arg)
HGVS:
  • NC_000023.11:g.150649792A>G
  • NG_008199.1:g.86219A>G
  • NM_000252.3:c.944A>GMANE SELECT
  • NM_001376906.1:c.944A>G
  • NM_001376907.1:c.833A>G
  • NM_001376908.1:c.944A>G
  • NP_000243.1:p.His315Arg
  • NP_001363835.1:p.His315Arg
  • NP_001363836.1:p.His278Arg
  • NP_001363837.1:p.His315Arg
  • LRG_839:g.86219A>G
  • NC_000023.10:g.149818265A>G
Protein change:
H278R
Links:
dbSNP: rs2148497817
NCBI 1000 Genomes Browser:
rs2148497817
Molecular consequence:
  • NM_000252.3:c.944A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001376906.1:c.944A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001376907.1:c.833A>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001376908.1:c.944A>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Severe X-linked myotubular myopathy (CNMX)
Synonyms:
X-linked centronuclear myopathy; MYOTUBULAR MYOPATHY 1; Myotubular myopathy, X-linked
Identifiers:
MONDO: MONDO:0010683; MedGen: C0410203; Orphanet: 596; OMIM: 310400

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV002115415Invitae
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Aug 29, 2021) 		germlineclinical testing

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

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical 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):240-242.

PubMed [citation]
PMID:
28492532
PMCID:
PMC5632818

Details of each submission

From Invitae, SCV002115415.3

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

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. 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: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals affected with MTM1-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces histidine with arginine at codon 315 of the MTM1 protein (p.His315Arg). The histidine residue is highly conserved and there is a small physicochemical difference between histidine and arginine.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Feb 28, 2024