Variant 2-162384894-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_033272.4(KCNH7):c.2756A>G(p.His919Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,156 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

KCNH7
NM_033272.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.68

Variant links:

Genes affected

KCNH7 (HGNC:18863): (potassium voltage-gated channel subfamily H member 7) 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. There are at least two alternatively spliced transcript variants derived from this gene and encoding distinct isoforms. [provided by RefSeq, Jul 2008]

KCNH7 links:

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ACMG classification

Classification made for transcript

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=0.103054136).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCNH7	NM_033272.4 link	c.2756A>G	p.His919Arg	missense_variant	13/16	ENST00000332142.10	NP_150375.2	Q9NS40-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCNH7	ENST00000332142.10 link	c.2756A>G	p.His919Arg	missense_variant	13/16	1	NM_033272.4	ENSP00000331727.5		Q9NS40-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460156

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726428

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

May 29, 2024

The c.2756A>G (p.H919R) alteration is located in exon 13 (coding exon 13) of the KCNH7 gene. This alteration results from a A to G substitution at nucleotide position 2756, causing the histidine (H) at amino acid position 919 to be replaced by an arginine (R). 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

0.066

BayesDel_addAF

Benign

-0.079

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Benign

0.88

DEOGEN2

Benign

0.060

.;T

Eigen

Benign

-0.47

Eigen_PC

Benign

-0.25

FATHMM_MKL

Uncertain

0.78

LIST_S2

Benign

0.68

T;T

M_CAP

Benign

0.037

MetaRNN

Benign

0.10

T;T

MetaSVM

Uncertain

0.17

MutationAssessor

Benign

-0.22

.;N

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.30

.;N

REVEL

Benign

0.27

Sift

Benign

0.61

.;T

Sift4G

Benign

0.63

T;T

Polyphen

0.0

.;B

Vest4

0.045

MutPred

0.21

.;Gain of MoRF binding (P = 0.0245);

MVP

0.27

MPC

0.11

ClinPred

0.060

GERP RS

3.3

Varity_R

0.047

gMVP

0.18

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over