chr14-62708378-G-T

Position:

chr14-62708378-G-T

Variant summary

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

The NM_139318.5(KCNH5):c.2097C>A(p.Ser699Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000263 in 1,613,600 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).

Frequency

Genomes: 𝑓 0.00035 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00025 ( 0 hom. )

Consequence

KCNH5
NM_139318.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 2.44

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=0.04881081).

BP6

Variant 14-62708378-G-T is Benign according to our data. Variant chr14-62708378-G-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 410375.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS2

High AC in GnomAd4 at 53 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNH5	NM_139318.5 linkuse as main transcript	c.2097C>A	p.Ser699Arg	missense_variant	11/11	ENST00000322893.12	NP_647479.2	Q8NCM2-1
KCNH5	NM_172375.3 linkuse as main transcript	c.*64C>A		3_prime_UTR_variant	10/10		NP_758963.1	Q8NCM2-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNH5	ENST00000322893.12 linkuse as main transcript	c.2097C>A	p.Ser699Arg	missense_variant	11/11	1	NM_139318.5	ENSP00000321427.7		Q8NCM2-1
KCNH5	ENST00000420622 linkuse as main transcript	c.*64C>A		3_prime_UTR_variant	10/10	1		ENSP00000395439.2		Q8NCM2-2

Frequencies

GnomAD3 genomes

AF:

0.000348

AC:

AN:

152134

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00203

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:

0.000265

Gnomad OTH

AF:

0.000959

GnomAD3 exomes

AF:

0.000311

AC:

AN:

250848

Hom.:

AF XY:

0.000302

AC XY:

AN XY:

135634

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00121

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:

0.000299

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000254

AC:

371

AN:

1461348

Hom.:

Cov.:

AF XY:

0.000234

AC XY:

170

AN XY:

726976

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00130

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000378

Gnomad4 NFE exome

AF:

0.000272

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.000348

AC:

AN:

152252

Hom.:

Cov.:

AF XY:

0.000363

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.00203

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000265

Gnomad4 OTH

AF:

0.000949

Alfa

AF:

0.000302

Hom.:

Bravo

AF:

0.000412

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000181

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000237

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

Aug 27, 2024

The c.2097C>A (p.S699R) alteration is located in exon 11 (coding exon 11) of the KCNH5 gene. This alteration results from a C to A substitution at nucleotide position 2097, causing the serine (S) at amino acid position 699 to be replaced by an arginine (R). 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 22, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.93

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.41

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.24

Eigen

Benign

0.039

Eigen_PC

Benign

0.17

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

M_CAP

Benign

0.010

MetaRNN

Benign

0.049

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.4

PrimateAI

Pathogenic

0.82

PROVEAN

Benign

-1.6

REVEL

Benign

0.12

Sift

Benign

0.16

Sift4G

Benign

0.54

Polyphen

0.42

Vest4

0.46

MutPred

0.37

Gain of MoRF binding (P = 0.014);

MVP

0.35

MPC

1.1

ClinPred

0.034

GERP RS

3.8

Varity_R

0.22

gMVP

0.53

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