7-150945497-C-T

Position:

chr7-150945497-C-T

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 0P and 15B. BP4_ModerateBP6_Very_StrongBP7BS2

The NM_000238.4(KCNH2):c.3348G>A(p.Ala1116=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000488 in 1,557,664 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. A1116A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00010 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

KCNH2
NM_000238.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.480

Variant links:

Genes affected

KCNH2 (HGNC:6251): (potassium voltage-gated channel subfamily H member 2) This gene encodes a component of a voltage-activated potassium channel found in cardiac muscle, nerve cells, and microglia. Four copies of this protein interact with one copy of the KCNE2 protein to form a functional potassium channel. Mutations in this gene can cause long QT syndrome type 2 (LQT2). Transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, May 2022]

KCNH2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.42).

BP6

Variant 7-150945497-C-T is Benign according to our data. Variant chr7-150945497-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 200268.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.48 with no splicing effect.

BS2

High AC in GnomAd4 at 15 AD,Digenic gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KCNH2	NM_000238.4 linkuse as main transcript	c.3348G>A	p.Ala1116=	synonymous_variant	15/15	ENST00000262186.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KCNH2	ENST00000262186.10 linkuse as main transcript	c.3348G>A	p.Ala1116=	synonymous_variant	15/15	1	NM_000238.4	P1	Q12809-1
KCNH2	ENST00000330883.9 linkuse as main transcript	c.2328G>A	p.Ala776=	synonymous_variant	11/11	1			Q12809-2
KCNH2	ENST00000684241.1 linkuse as main transcript	n.4181G>A		non_coding_transcript_exon_variant	13/13

Frequencies

GnomAD3 genomes

AF:

0.0000997

AC:

AN:

150482

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000343

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000856

AC:

AN:

163508

Hom.:

AF XY:

0.000115

AC XY:

AN XY:

87012

show subpopulations

Gnomad AFR exome

AF:

0.000548

Gnomad AMR exome

AF:

0.0000389

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000328

Gnomad SAS exome

AF:

0.000129

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000156

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000433

AC:

AN:

1407182

Hom.:

Cov.:

AF XY:

0.0000518

AC XY:

AN XY:

694780

show subpopulations

Gnomad4 AFR exome

AF:

0.000501

Gnomad4 AMR exome

AF:

0.0000272

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000467

Gnomad4 SAS exome

AF:

0.000125

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000120

Gnomad4 OTH exome

AF:

0.0000685

GnomAD4 genome

AF:

0.0000997

AC:

AN:

150482

Hom.:

Cov.:

AF XY:

0.0000816

AC XY:

AN XY:

73522

show subpopulations

Gnomad4 AFR

AF:

0.000343

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000148

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000494

Hom.:

Bravo

AF:

0.0000945

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Long QT syndrome

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 22, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	All of Us Research Program, National Institutes of Health	Dec 18, 2023	- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Mar 29, 2014

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

May 01, 2020

- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 09, 2019

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. -

Cardiac arrhythmia

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Color Diagnostics, LLC DBA Color Health

Nov 27, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.42

CADD

Benign

9.7

DANN

Benign

0.50

RBP_binding_hub_radar

0.97

RBP_regulation_power_radar

2.1

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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