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NM_000426.4(LAMA2):c.7280del (p.Leu2427fs) AND LAMA2-related muscular dystrophy

Germline classification:
Pathogenic (1 submission)
Last evaluated:
Nov 12, 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:
RCV003573568.2

Allele description [Variation Report for NM_000426.4(LAMA2):c.7280del (p.Leu2427fs)]

NM_000426.4(LAMA2):c.7280del (p.Leu2427fs)

Gene:
LAMA2:laminin subunit alpha 2 [Gene - OMIM - HGNC]
Variant type:
Deletion
Cytogenetic location:
6q22.33
Genomic location:
Preferred name:
NM_000426.4(LAMA2):c.7280del (p.Leu2427fs)
HGVS:
  • NC_000006.12:g.129465269del
  • NG_008678.1:g.587129del
  • NM_000426.4:c.7280delMANE SELECT
  • NM_001079823.2:c.7280del
  • NP_000417.2:p.Leu2427Argfs
  • NP_000417.3:p.Leu2427fs
  • NP_001073291.2:p.Leu2427fs
  • LRG_409t1:c.7280del
  • LRG_409:g.587129del
  • LRG_409p1:p.Leu2427Argfs
  • NC_000006.11:g.129786414del
  • NM_000426.3:c.7280delT
Protein change:
L2427fs
Molecular consequence:
  • NM_000426.4:c.7280del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001079823.2:c.7280del - frameshift variant - [Sequence Ontology: SO:0001589]

Condition(s)

Name:
LAMA2-related muscular dystrophy (LAMA2-RD)
Synonyms:
Laminin alpha 2-related dystrophy
Identifiers:
MONDO: MONDO:0100228; MedGen: C5679788

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004299249Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Pathogenic
(Nov 12, 2022) 		germlineclinical testing

PubMed (3)
[See all records that cite these PMIDs]

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

LAMA2 gene analysis in a cohort of 26 congenital muscular dystrophy patients.

Oliveira J, Santos R, Soares-Silva I, Jorge P, Vieira E, Oliveira ME, Moreira A, Coelho T, Ferreira JC, Fonseca MJ, Barbosa C, Prats J, Aríztegui ML, Martins ML, Moreno T, Heinimann K, Barbot C, Pascual-Pascual SI, Cabral A, Fineza I, Santos M, Bronze-da-Rocha E.

Clin Genet. 2008 Dec;74(6):502-12. doi: 10.1111/j.1399-0004.2008.01068.x. Epub 2008 Jun 11.

PubMed [citation]
PMID:
18700894

Limb girdle muscular dystrophy due to LAMA2 gene mutations: new mutations expand the clinical spectrum of a still challenging diagnosis.

Magri F, Brusa R, Bello L, Peverelli L, Del Bo R, Govoni A, Cinnante C, Colombo I, Fortunato F, Tironi R, Corti S, Grimoldi N, Sciacco M, Bresolin N, Pegoraro E, Moggio M, Comi GP.

Acta Myol. 2020 Jun;39(2):67-82. doi: 10.36185/2532-1900-009.

PubMed [citation]
PMID:
32904964
PMCID:
PMC7460730
See all PubMed Citations (3)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV004299249.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (3)

Description

For these reasons, this variant has been classified as Pathogenic. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. This variant has not been reported in the literature in individuals affected with LAMA2-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Leu2427Argfs*13) in the LAMA2 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in LAMA2 are known to be pathogenic (PMID: 18700894, 32904964).

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

Last Updated: Sep 29, 2024