rs41313752

Positions:

• chr7-150947034-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000238.4(KCNH2):​c.3173C>A​(p.Ala1058Glu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as not provided (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A1058T) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: KCNH2 NM_000238.4 missense
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 4.12

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.20087922).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KCNH2	NM_000238.4	c.3173C>A	p.Ala1058Glu	missense_variant	14/15	ENST00000262186.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KCNH2	ENST00000262186.10	c.3173C>A	p.Ala1058Glu	missense_variant	14/15	1	NM_000238.4	P1
KCNH2	ENST00000330883.9	c.2153C>A	p.Ala718Glu	missense_variant	10/11	1
KCNH2	ENST00000684241.1	n.4006C>A		non_coding_transcript_exon_variant	12/13

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: not provided

Submissions summary: Other:1

Revision: no classification provided

Submissions by phenotype

not provided Other:1

not provided, no classification provided

literature only

Cardiovascular Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust

-

This variant has been reported in the following publications (PMID:14661677;PMID:19841300). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.0
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.54	.;D
Eigen	Benign	-0.11
Eigen_PC	Benign	0.033
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.80	T;T
M_CAP	Uncertain	0.14	D
MetaRNN	Benign	0.20	T;T
MetaSVM	Uncertain	-0.17	T
MutationAssessor	Benign	0.97	.;L
MutationTaster	Benign	0.98	D;D;D
PrimateAI	Uncertain	0.55	T
PROVEAN	Benign	-2.2	N;N
REVEL	Uncertain	0.49
Sift	Benign	0.073	T;T
Sift4G	Benign	0.27	T;D
Polyphen		0.13	B;B
Vest4		0.38
MutPred		0.18		.;Loss of MoRF binding (P = 0.0471);
MVP		0.83
MPC		0.23
ClinPred		0.68	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.36
gMVP		0.71

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

Other links and lift over

dbSNP: rs41313752; hg19: chr7-150644122;