chr15-73323289-G-A

Position:

chr15-73323289-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_005477.3(HCN4):c.2804C>T(p.Ser935Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000741 in 1,538,984 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000078 ( 1 hom. )

Consequence

HCN4
NM_005477.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:3

Conservation

PhyloP100: 6.30

Variant links:

Genes affected

HCN4 (HGNC:16882): (hyperpolarization activated cyclic nucleotide gated potassium channel 4) This gene encodes a member of the hyperpolarization-activated cyclic nucleotide-gated potassium channels. The encoded protein shows slow kinetics of activation and inactivation, and is necessary for the cardiac pacemaking process. This channel may also mediate responses to sour stimuli. Mutations in this gene have been linked to sick sinus syndrome 2, also known as atrial fibrillation with bradyarrhythmia or familial sinus bradycardia. Two pseudogenes have been identified on chromosome 15. [provided by RefSeq, Oct 2008]

HCN4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.011660606).

BP6

Variant 15-73323289-G-A is Benign according to our data. Variant chr15-73323289-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 190784.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=2}.

BS2

High AC in GnomAd4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HCN4	NM_005477.3 linkuse as main transcript	c.2804C>T	p.Ser935Phe	missense_variant	8/8	ENST00000261917.4	NP_005468.1
HCN4	XM_011521148.3 linkuse as main transcript	c.1586C>T	p.Ser529Phe	missense_variant	7/7		XP_011519450.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HCN4	ENST00000261917.4 linkuse as main transcript	c.2804C>T	p.Ser935Phe	missense_variant	8/8	1	NM_005477.3	ENSP00000261917	P1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000448

AC:

AN:

147356

Hom.:

AF XY:

0.000342

AC XY:

AN XY:

78856

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00278

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000779

AC:

108

AN:

1386832

Hom.:

Cov.:

AF XY:

0.0000705

AC XY:

AN XY:

681080

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00247

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000131

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000196

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152152

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74320

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000832

Hom.:

Bravo

AF:

0.000212

ExAC

AF:

0.000339

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jun 10, 2016	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Dec 15, 2020	- -

Brugada syndrome 8

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 21, 2023	- -

not specified

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Stanford Center for Inherited Cardiovascular Disease, Stanford University

Jul 30, 2014

Note this variant was found in clinical genetic testing performed by one or more labs who may also submit to ClinVar. Thus any internal case data may overlap with the internal case data of other labs. The interpretation reviewed below is that of the Stanford Center for Inherited Cardiovascular Disease. HCN4 p.Ser935Phe Given that the variant is novel, there is a lack of population frequency data, and the gene-phenotype association is unclear, we consider this variant a variant of uncertain significance. To the best of our knowledge the variant is novel. In silico analysis with PolyPhen-2 predicts the variant to be benign. The serine at codon 935 is not completely conserved across species. In total the variant has not been seen in ~6500 individuals from publicly available population datasets. There is no variation at codon 935 listed in the NHLBI Exome Sequencing Project dataset, which currently includes variant calls on ~6500 Caucasian and African American individuals (as of July 29th, 2014). There is also no variation at this codon listed in dbSNP (as of July 29th, 2014). -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 20, 2022

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.090

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.31

Eigen

Uncertain

0.19

Eigen_PC

Benign

0.18

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.64

M_CAP

Pathogenic

0.88

MetaRNN

Benign

0.012

MetaSVM

Pathogenic

0.84

MutationAssessor

Benign

0.69

MutationTaster

Benign

0.95

PrimateAI

Pathogenic

0.88

PROVEAN

Benign

-1.7

REVEL

Uncertain

0.41

Sift

Uncertain

0.0070

Sift4G

Benign

0.11

Polyphen

0.94

Vest4

0.18

MutPred

0.19

Loss of phosphorylation at S935 (P = 0.0148);

MVP

0.93

MPC

0.27

ClinPred

0.20

GERP RS

2.9

Varity_R

0.14

gMVP

0.32

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over