Variant chr17-42163691-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_012285.3(KCNH4):c.2392C>G(p.Pro798Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000595 in 1,511,982 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000059 ( 0 hom. )

Consequence

KCNH4
NM_012285.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.694

Variant links:

Genes affected

KCNH4 (HGNC:6253): (potassium voltage-gated channel subfamily H member 4) Voltage-gated potassium (Kv) channels represent the most complex class of voltage-gated ion channels from both functional and structural standpoints. Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, epithelial electrolyte transport, smooth muscle contraction, and cell volume. This gene encodes a member of the potassium channel, voltage-gated, subfamily H. This member is a pore-forming (alpha) subunit. The gene is brain-specific, and located in the neocortex and the striatum. It may be involved in cellular excitability of restricted neurons in the central nervous system. [provided by RefSeq, Jul 2008]

KCNH4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.08367437).

BS2

High AC in GnomAdExome4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNH4	NM_012285.3 link	c.2392C>G	p.Pro798Ala	missense_variant	13/17	ENST00000264661.4	NP_036417.1	Q9UQ05

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNH4	ENST00000264661.4 link	c.2392C>G	p.Pro798Ala	missense_variant	13/17	1	NM_012285.3	ENSP00000264661.2		Q9UQ05
KCNH4	ENST00000607371.5 link	c.2392C>G	p.Pro798Ala	missense_variant	13/17	5		ENSP00000475564.1		Q9UQ05

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151930

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000588

AC:

AN:

1360052

Hom.:

Cov.:

AF XY:

0.00000450

AC XY:

AN XY:

667116

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000658

Gnomad4 OTH exome

AF:

0.0000179

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151930

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74208

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 27, 2022

The c.2392C>G (p.P798A) alteration is located in exon 13 (coding exon 13) of the KCNH4 gene. This alteration results from a C to G substitution at nucleotide position 2392, causing the proline (P) at amino acid position 798 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.060

BayesDel_addAF

Benign

0.0068

BayesDel_noAF

Benign

-0.23

CADD

Benign

DANN

Benign

0.42

DEOGEN2

Benign

0.24

T;T

Eigen

Benign

-0.79

Eigen_PC

Benign

-0.75

FATHMM_MKL

Benign

0.055

LIST_S2

Benign

0.63

.;T

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.084

T;T

MetaSVM

Uncertain

0.034

MutationAssessor

Benign

0.69

N;N

PrimateAI

Benign

0.46

PROVEAN

Benign

-0.49

.;N

REVEL

Benign

0.24

Sift

Benign

0.16

.;T

Sift4G

Benign

0.79

T;T

Polyphen

0.0050

B;B

Vest4

0.15

MutPred

0.25

Loss of glycosylation at P798 (P = 0.0115);Loss of glycosylation at P798 (P = 0.0115);

MVP

0.20

MPC

0.31

ClinPred

0.17

GERP RS

4.5

Varity_R

0.042

gMVP

0.31

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.080

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