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NM_000232.5(SGCB):c.943G>A (p.Gly315Arg) AND Autosomal recessive limb-girdle muscular dystrophy type 2E

Germline classification:
Uncertain significance (3 submissions)
Last evaluated:
Oct 2, 2023
Review status:
2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts
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:
RCV000815228.9

Allele description [Variation Report for NM_000232.5(SGCB):c.943G>A (p.Gly315Arg)]

NM_000232.5(SGCB):c.943G>A (p.Gly315Arg)

Gene:
SGCB:sarcoglycan beta [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
4q12
Genomic location:
Preferred name:
NM_000232.5(SGCB):c.943G>A (p.Gly315Arg)
HGVS:
  • NC_000004.12:g.52023971C>T
  • NG_008891.1:g.19349G>A
  • NG_053164.1:g.1341G>A
  • NM_000232.5:c.943G>AMANE SELECT
  • NP_000223.1:p.Gly315Arg
  • NP_000223.1:p.Gly315Arg
  • LRG_204t1:c.943G>A
  • LRG_204:g.19349G>A
  • LRG_204p1:p.Gly315Arg
  • NC_000004.11:g.52890137C>T
  • NM_000232.4:c.943G>A
Protein change:
G315R
Links:
dbSNP: rs150395645
NCBI 1000 Genomes Browser:
rs150395645
Molecular consequence:
  • NM_000232.5:c.943G>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Autosomal recessive limb-girdle muscular dystrophy type 2E (LGMDR4)
Synonyms:
Limb-girdle muscular dystrophy, type 2E; Muscular dystrophy limb-girdle with beta-sarcoglycan deficiency; Beta-sarcoglycan limb-girdle muscular dystrophy; See all synonyms [MedGen]
Identifiers:
MONDO: MONDO:0011423; MedGen: C1858593; Orphanet: 119; OMIM: 604286

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV000955676Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))
Uncertain significance
(Oct 13, 2022)
germlineclinical testing

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

SCV001462201Natera, Inc.
no assertion criteria provided
Uncertain significance
(Jan 6, 2020)
germlineclinical testing

SCV003827622Revvity Omics, Revvity
criteria provided, single submitter

(ACMG Guidelines, 2015)
Uncertain significance
(Oct 2, 2023)
germlineclinical testing

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

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. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]
PMID:
28492532
PMCID:
PMC5632818

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]
PMID:
25741868
PMCID:
PMC4544753

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV000955676.3

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

Description

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 315 of the SGCB protein (p.Gly315Arg). This variant is present in population databases (rs150395645, gnomAD 0.09%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with SGCB-related conditions. ClinVar contains an entry for this variant (Variation ID: 255606). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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.

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

From Natera, Inc., SCV001462201.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Revvity Omics, Revvity, SCV003827622.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Oct 20, 2024