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NM_001127222.2(CACNA1A):c.978+1G>A AND CACNA1A-related disorder

Germline classification:
Likely pathogenic (1 submission)
Last evaluated:
Mar 29, 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:
RCV003985608.1

Allele description [Variation Report for NM_001127222.2(CACNA1A):c.978+1G>A]

NM_001127222.2(CACNA1A):c.978+1G>A

Gene:
CACNA1A:calcium voltage-gated channel subunit alpha1 A [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
19p13.13
Genomic location:
Preferred name:
NM_001127222.2(CACNA1A):c.978+1G>A
HGVS:
  • NC_000019.10:g.13359605C>T
  • NG_011569.1:g.151856G>A
  • NM_000068.4:c.978+1G>A
  • NM_001127221.2:c.978+1G>A
  • NM_001127222.2:c.978+1G>AMANE SELECT
  • NM_001174080.2:c.978+1G>A
  • NM_023035.3:c.978+1G>A
  • LRG_7:g.151856G>A
  • NC_000019.9:g.13470419C>T
  • NM_001127222.1:c.978+1G>A
Molecular consequence:
  • NM_000068.4:c.978+1G>A - splice donor variant - [Sequence Ontology: SO:0001575]
  • NM_001127221.2:c.978+1G>A - splice donor variant - [Sequence Ontology: SO:0001575]
  • NM_001127222.2:c.978+1G>A - splice donor variant - [Sequence Ontology: SO:0001575]
  • NM_001174080.2:c.978+1G>A - splice donor variant - [Sequence Ontology: SO:0001575]
  • NM_023035.3:c.978+1G>A - splice donor variant - [Sequence Ontology: SO:0001575]

Condition(s)

Name:
CACNA1A-related disorder
Synonyms:
CACNA1A-related condition
Identifiers:

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV004111659PreventionGenetics, part of Exact Sciences
criteria provided, single submitter

(ACMG Guidelines, 2015)		Likely pathogenic
(Mar 29, 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

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 PreventionGenetics, part of Exact Sciences, SCV004111659.1

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

Description

The CACNA1A c.978+1G>A variant is predicted to disrupt the GT donor site and interfere with normal splicing. This variant was reported in multiple members of a multi-generational family with episodic ataxia 2 (referred to as 1253+1G>A, Subramony et al. 2003. PubMed ID: 14681882). This variant has not been reported in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. Variants that disrupt the consensus splice donor site in CACNA1A are expected to be pathogenic. This variant is interpreted as likely pathogenic.

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

Last Updated: Nov 10, 2024