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NM_005477.3(HCN4):c.2842del (p.Ala948fs) AND Brugada syndrome 8

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Oct 9, 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:
RCV001903860.3

Allele description

NM_005477.3(HCN4):c.2842del (p.Ala948fs)

Gene:
HCN4:hyperpolarization activated cyclic nucleotide gated potassium channel 4 [Gene - OMIM - HGNC]
Variant type:
Deletion
Cytogenetic location:
15q24.1
Genomic location:
Preferred name:
NM_005477.3(HCN4):c.2842del (p.Ala948fs)
HGVS:
  • NC_000015.10:g.73323254del
  • NG_009063.1:g.51014del
  • NM_005477.3:c.2842delMANE SELECT
  • NP_005468.1:p.Ala948fs
  • NC_000015.9:g.73615592del
  • NC_000015.9:g.73615595del
Protein change:
A948fs
Links:
dbSNP: rs1275052772
NCBI 1000 Genomes Browser:
rs1275052772
Molecular consequence:
  • NM_005477.3:c.2842del - frameshift variant - [Sequence Ontology: SO:0001589]

Condition(s)

Name:
Brugada syndrome 8 (BRGDA8)
Identifiers:
MONDO: MONDO:0013148; MedGen: C2751083; Orphanet: 130; OMIM: 613123

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV002173644Invitae
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Oct 9, 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, SCV002173644.3

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

Description

This sequence change creates a premature translational stop signal (p.Ala948Profs*37) in the HCN4 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 256 amino acid(s) of the HCN4 protein. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with HCN4-related conditions. ClinVar contains an entry for this variant (Variation ID: 1405518). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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