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NM_006306.4(SMC1A):c.1149C>G (p.Ser383Arg) AND Congenital muscular hypertrophy-cerebral syndrome

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Nov 24, 2023
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:
RCV003625429.1

Allele description

NM_006306.4(SMC1A):c.1149C>G (p.Ser383Arg)

Gene:
SMC1A:structural maintenance of chromosomes 1A [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
Xp11.22
Genomic location:
Preferred name:
NM_006306.4(SMC1A):c.1149C>G (p.Ser383Arg)
HGVS:
  • NC_000023.11:g.53411866G>C
  • NG_006988.2:g.15805C>G
  • NM_001281463.1:c.1083C>G
  • NM_006306.4:c.1149C>GMANE SELECT
  • NP_001268392.1:p.Ser361Arg
  • NP_006297.2:p.Ser383Arg
  • NP_006297.2:p.Ser383Arg
  • LRG_773t1:c.1083C>G
  • LRG_773t2:c.1149C>G
  • LRG_773:g.15805C>G
  • LRG_773p1:p.Ser361Arg
  • LRG_773p2:p.Ser383Arg
  • NC_000023.10:g.53438816G>C
  • NM_006306.3:c.1149C>G
Protein change:
S361R
Molecular consequence:
  • NM_001281463.1:c.1083C>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_006306.4:c.1149C>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Congenital muscular hypertrophy-cerebral syndrome (CDLS2)
Synonyms:
Cornelia de Lange syndrome 2
Identifiers:
MONDO: MONDO:0010370; MedGen: C1802395; Orphanet: 199; OMIM: 300590

Recent activity

Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004426158Invitae
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Nov 24, 2023) 		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. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]
PMID:
28492532
PMCID:
PMC5632818

Details of each submission

From Invitae, SCV004426158.1

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

Description

This sequence change replaces serine, which is neutral and polar, with arginine, which is basic and polar, at codon 383 of the SMC1A protein (p.Ser383Arg). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SMC1A-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 not expected to disrupt SMC1A protein function with a negative predictive value of 80%. 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

Last Updated: Feb 28, 2024