Genetic Variant KCNH5:p.Ala878Thr (chr14-62707843-C-T) – ACMG Classification: Benign (-12 pts)

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_ModerateBP6_ModerateBS1BS2

The NM_139318.5(KCNH5):c.2632G>A(p.Ala878Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000155 in 1,613,990 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 Benign (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00016 ( 0 hom. )

Consequence

KCNH5
NM_139318.5 missense

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 6.17

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:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.16774186).

BP6

Variant 14-62707843-C-T is Benign according to our data. Variant chr14-62707843-C-T is described in ClinVar as [Benign]. Clinvar id is 461393.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000112 (17/152096) while in subpopulation NFE AF= 0.00022 (15/68030). AF 95% confidence interval is 0.000135. There are 0 homozygotes in gnomad4. There are 5 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 17 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KCNH5	NM_139318.5 link	c.2632G>A	p.Ala878Thr	missense_variant	Exon 11 of 11	ENST00000322893.12	NP_647479.2	Q8NCM2-1
KCNH5	NM_172375.3 link	c.*599G>A		3_prime_UTR_variant	Exon 10 of 10		NP_758963.1	Q8NCM2-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KCNH5	ENST00000322893.12 link	c.2632G>A	p.Ala878Thr	missense_variant	Exon 11 of 11	1	NM_139318.5	ENSP00000321427.7		Q8NCM2-1
KCNH5	ENST00000420622 link	c.*599G>A		3_prime_UTR_variant	Exon 10 of 10	1		ENSP00000395439.2		Q8NCM2-2

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000220

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000954

AC:

AN:

251496

Hom.:

AF XY:

0.000110

AC XY:

AN XY:

135922

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.000202

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000159

AC:

233

AN:

1461894

Hom.:

Cov.:

AF XY:

0.000165

AC XY:

120

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000196

Gnomad4 OTH exome

AF:

0.000182

GnomAD4 genome

AF:

0.000112

AC:

AN:

152096

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74282

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.000220

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000157

Hom.:

Bravo

AF:

0.000113

ExAC

AF:

0.000123

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.000652

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Early infantile epileptic encephalopathy with suppression bursts

Benign:1

Dec 02, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

0.0020

BayesDel_noAF

Uncertain

0.040

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

Eigen

Benign

0.051

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.92

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.17

MetaSVM

Uncertain

0.77

MutationAssessor

Benign

1.7

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-0.74

REVEL

Uncertain

0.52

Sift

Uncertain

0.021

Sift4G

Benign

0.20

Polyphen

0.41

Vest4

0.24

MutPred

0.13

Gain of catalytic residue at L873 (P = 0.0407);

MVP

0.65

MPC

0.17

ClinPred

0.22

GERP RS

5.4

Varity_R

0.18

gMVP

0.33

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