NM_005477.3(HCN4):c.1435A>C (p.Ile479Leu) AND Cardiovascular phenotype

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Oct 6, 2016
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:: RCV000618090.3

Allele description [Variation Report for NM_005477.3(HCN4):c.1435A>C (p.Ile479Leu)]

NM_005477.3(HCN4):c.1435A>C (p.Ile479Leu)

Gene:

HCN4:hyperpolarization activated cyclic nucleotide gated potassium channel 4 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

15q24.1

Genomic location:

Preferred name:

NM_005477.3(HCN4):c.1435A>C (p.Ile479Leu)

HGVS:

NC_000015.10:g.73329728T>G
NG_009063.1:g.44537A>C
NM_005477.3:c.1435A>CMANE SELECT
NP_005468.1:p.Ile479Leu
NC_000015.9:g.73622069T>G
NM_005477.2:c.1435A>C

Protein change:

I479L

Links:

dbSNP: rs1555475985

NCBI 1000 Genomes Browser:

rs1555475985

Molecular consequence:

NM_005477.3:c.1435A>C - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Cardiovascular phenotype
Identifiers:: MedGen: CN230736

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000735549	Ambry Genetics	criteria provided, single submitter (Ambry Variant Classification Scheme 2023)	Uncertain significance (Oct 6, 2016)	germline	clinical testing	Citation Link

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV000735549

Ambry Genetics

criteria provided, single submitter

(Ambry Variant Classification Scheme 2023)

Uncertain significance
(Oct 6, 2016)

germline

clinical testing

Citation Link

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

Details of each submission

From Ambry Genetics, SCV000735549.5

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

Description

The p.I479L variant (also known as c.1435A>C), located in coding exon 4 of the HCN4 gene, results from an A to C substitution at nucleotide position 1435. The isoleucine at codon 479 is replaced by leucine, an amino acid with highly similar properties. This variant was not reported in population based cohorts in the following databases: Database of Single Nucleotide Polymorphisms (dbSNP), NHLBI Exome Sequencing Project (ESP), and 1000 Genomes Project. In the ESP, this variant was not observed in 6495 samples (12990 alleles) with coverage at this position. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

#	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: May 1, 2024

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