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NM_000069.3(CACNA1S):c.5303A>G (p.His1768Arg) AND multiple conditions

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
May 12, 2019
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:
RCV001049462.7

Allele description

NM_000069.3(CACNA1S):c.5303A>G (p.His1768Arg)

Gene:
CACNA1S:calcium voltage-gated channel subunit alpha1 S [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
1q32.1
Genomic location:
Preferred name:
NM_000069.3(CACNA1S):c.5303A>G (p.His1768Arg)
HGVS:
  • NC_000001.11:g.201040298T>C
  • NG_009816.2:g.77269A>G
  • NM_000069.3:c.5303A>GMANE SELECT
  • NP_000060.2:p.His1768Arg
  • NC_000001.10:g.201009426T>C
  • NG_009816.1:g.77269A>G
  • NM_000069.2:c.5303A>G
Protein change:
H1768R
Links:
dbSNP: rs1255660415
NCBI 1000 Genomes Browser:
rs1255660415
Molecular consequence:
  • NM_000069.3:c.5303A>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Hypokalemic periodic paralysis, type 1
Synonyms:
HypoPP
Identifiers:
MONDO: MONDO:0042979; MedGen: C3714580; Orphanet: 681; OMIM: 170400
Name:
Malignant hyperthermia, susceptibility to, 5 (MHS5)
Synonyms:
Malignant hyperthermia susceptibility type 5; Malignant hyperpyrexia susceptibility type 5
Identifiers:
MONDO: MONDO:0011163; MedGen: C1866077; Orphanet: 423; OMIM: 601887

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV001213511Invitae
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(May 12, 2019) 		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, SCV001213511.5

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

Description

This sequence change replaces histidine with arginine at codon 1768 of the CACNA1S protein (p.His1768Arg). The histidine residue is weakly conserved and there is a small physicochemical difference between histidine and arginine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with CACNA1S-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The arginine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. 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: Jul 29, 2024