rs140205536

Positions:

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 1P and 9B. PP2BP4_StrongBP6BS2

The ENST00000322893.12(KCNH5):c.2365G>T(p.Gly789Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000582 in 1,614,190 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G789S) has been classified as Benign.

Frequency

Genomes: 𝑓 0.00038 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

KCNH5
ENST00000322893.12 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 1.52

Variant links:

Genes affected

KCNH5 (HGNC:6254): (potassium voltage-gated channel subfamily H member 5) This gene encodes a member of voltage-gated potassium channels. Members of this family have diverse functions, including regulating neurotransmitter and hormone release, cardiac function, and cell volume. This protein is an outward-rectifying, noninactivating channel. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

KCNH5 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), KCNH5. . Gene score misZ 2.509 (greater than the threshold 3.09). Trascript score misZ 3.7308 (greater than threshold 3.09). GenCC has associacion of gene with infantile-onset epilepsy.

BP4

Computational evidence support a benign effect (MetaRNN=0.016533941).

BP6

Variant 14-62708110-C-A is Benign according to our data. Variant chr14-62708110-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 530610.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS2

High AC in GnomAd4 at 58 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNH5	NM_139318.5 linkuse as main transcript	c.2365G>T	p.Gly789Cys	missense_variant	11/11	ENST00000322893.12	NP_647479.2
KCNH5	NM_172375.3 linkuse as main transcript	c.*332G>T		3_prime_UTR_variant	10/10		NP_758963.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNH5	ENST00000322893.12 linkuse as main transcript	c.2365G>T	p.Gly789Cys	missense_variant	11/11	1	NM_139318.5	ENSP00000321427	P1	Q8NCM2-1
KCNH5	ENST00000420622.6 linkuse as main transcript	c.*332G>T		3_prime_UTR_variant	10/10	1		ENSP00000395439		Q8NCM2-2

Frequencies

GnomAD3 genomes

AF:

0.000355

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00123

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000915

AC:

AN:

251476

Hom.:

AF XY:

0.0000441

AC XY:

AN XY:

135912

show subpopulations

Gnomad AFR exome

AF:

0.00129

Gnomad AMR exome

AF:

0.0000578

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:

0.0000246

AC:

AN:

1461890

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.000806

Gnomad4 AMR exome

AF:

0.000112

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:

0.00000180

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.000381

AC:

AN:

152300

Hom.:

Cov.:

AF XY:

0.000363

AC XY:

AN XY:

74468

show subpopulations

Gnomad4 AFR

AF:

0.00132

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000391

Hom.:

Bravo

AF:

0.000351

ESP6500AA

AF:

0.00182

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000132

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 13, 2024

The c.2365G>T (p.G789C) alteration is located in exon 11 (coding exon 11) of the KCNH5 gene. This alteration results from a G to T substitution at nucleotide position 2365, causing the glycine (G) at amino acid position 789 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Early infantile epileptic encephalopathy with suppression bursts

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 25, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Uncertain

-0.050

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.23

Eigen

Benign

-0.12

Eigen_PC

Benign

-0.093

FATHMM_MKL

Benign

0.50

LIST_S2

Benign

0.72

M_CAP

Uncertain

0.20

MetaRNN

Benign

0.017

MetaSVM

Pathogenic

0.81

MutationAssessor

Benign

0.34

MutationTaster

Benign

0.98

D;D

PrimateAI

Benign

0.40

PROVEAN

Benign

-2.3

REVEL

Uncertain

0.42

Sift

Uncertain

0.015

Sift4G

Benign

0.078

Polyphen

0.74

Vest4

0.20

MVP

0.77

MPC

0.23

ClinPred

0.059

GERP RS

3.7

Varity_R

0.17

gMVP

0.37

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