NM_000069.3(CACNA1S):c.1912T>A (p.Cys638Ser) AND multiple conditions

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Sep 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:: RCV000696261.4

Allele description [Variation Report for NM_000069.3(CACNA1S):c.1912T>A (p.Cys638Ser)]

NM_000069.3(CACNA1S):c.1912T>A (p.Cys638Ser)

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.1912T>A (p.Cys638Ser)

HGVS:

NC_000001.11:g.201075531A>T
NG_009816.2:g.42036T>A
NM_000069.3:c.1912T>AMANE SELECT
NP_000060.2:p.Cys638Ser
NC_000001.10:g.201044659A>T
NG_009816.1:g.42036T>A
NM_000069.2:c.1912T>A

Protein change:

C638S

Links:

dbSNP: rs766576671

NCBI 1000 Genomes Browser:

rs766576671

Molecular consequence:

NM_000069.3:c.1912T>A - 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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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000824813	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Sep 29, 2021)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV000824813

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Sep 29, 2021)

germline

clinical testing

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

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical 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 Labcorp Genetics (formerly Invitae), Labcorp, SCV000824813.3

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

This sequence change replaces cysteine with serine at codon 638 of the CACNA1S protein (p.Cys638Ser). The cysteine residue is highly conserved and there is a moderate physicochemical difference between cysteine and serine. This variant is present in population databases (rs766576671, ExAC 0.006%). This variant has not been reported in the literature in individuals affected with CACNA1S-related conditions. 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.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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