rs199473540

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 1P and 1B. PP2BS2_Supporting

The NM_000238.4(KCNH2):c.2810G>A(p.Ser937Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000357 in 1,542,190 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. S937S) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000035 ( 0 hom. )

Consequence

KCNH2
NM_000238.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7B:1O:1

Conservation

PhyloP100: 1.69

Publications

4 publications found

Variant links:

Genes affected

KCNH2 (HGNC:6251): (potassium voltage-gated channel subfamily H member 2) This gene encodes a component of a voltage-activated potassium channel found in cardiac muscle, nerve cells, and microglia. Four copies of this protein interact with one copy of the KCNE2 protein to form a functional potassium channel. Mutations in this gene can cause long QT syndrome type 2 (LQT2). Transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, May 2022]

KCNH2 Gene-Disease associations (from GenCC):

long QT syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
long QT syndrome 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
short QT syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
short QT syndrome type 1
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
Brugada syndrome
Inheritance: AD Classification: MODERATE, NO_KNOWN Submitted by: ClinGen, Genomics England PanelApp

KCNH2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 158 curated pathogenic missense variants (we use a threshold of 10). The gene has 38 curated benign missense variants. Gene score misZ: 3.3724 (above the threshold of 3.09). Trascript score misZ: 2.4846 (below the threshold of 3.09). GenCC associations: The gene is linked to long QT syndrome 2, Brugada syndrome, short QT syndrome type 1, short QT syndrome, long QT syndrome.

BS2

High AC in GnomAd4 at 6 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000238.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
KCNH2	NM_000238.4	MANE Select	c.2810G>A	p.Ser937Asn	missense	Exon 12 of 15	NP_000229.1	A0A090N8Q0
KCNH2	NM_001406753.1		c.2522G>A	p.Ser841Asn	missense	Exon 10 of 13	NP_001393682.1	Q12809-7
KCNH2	NM_172057.3		c.1790G>A	p.Ser597Asn	missense	Exon 8 of 11	NP_742054.1	Q12809-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
KCNH2	ENST00000262186.10	TSL:1 MANE Select	c.2810G>A	p.Ser937Asn	missense	Exon 12 of 15	ENSP00000262186.5	Q12809-1
KCNH2	ENST00000330883.9	TSL:1	c.1790G>A	p.Ser597Asn	missense	Exon 8 of 11	ENSP00000328531.4	Q12809-2
KCNH2	ENST00000713710.1		c.2744G>A	p.Ser915Asn	missense	Exon 12 of 15	ENSP00000519013.1	A0AAQ5BGR0

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000502

AC:

AN:

139470

AF XY:

0.0000262

show subpopulations

Gnomad AFR exome

AF:

0.000148

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000113

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000353

AC:

AN:

1390016

Hom.:

Cov.:

AF XY:

0.0000379

AC XY:

AN XY:

685984

show subpopulations

African (AFR)

AF:

0.0000632

AC:

AN:

31670

American (AMR)

AF:

0.00

AC:

AN:

35900

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25138

East Asian (EAS)

AF:

0.00

AC:

AN:

35970

South Asian (SAS)

AF:

0.00

AC:

AN:

79480

European-Finnish (FIN)

AF:

0.00

AC:

AN:

39886

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4572

European-Non Finnish (NFE)

AF:

0.0000417

AC:

AN:

1079554

Other (OTH)

AF:

0.0000346

AC:

AN:

57846

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152174

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74332

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41446

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.533

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000856

Hom.:

Bravo

AF:

0.0000264

ExAC

AF:

0.0000203

AC:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Cardiovascular phenotype (2)

Long QT syndrome (2)

Short QT syndrome type 1;C3150943:Long QT syndrome 2 (2)

Cardiac arrhythmia (1)

not provided (1)

Congenital long QT syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.31

CardioboostArm

Benign

0.0085

BayesDel_addAF

Benign

-0.031

BayesDel_noAF

Uncertain

-0.030

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.43

Eigen

Benign

0.17

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.80

M_CAP

Pathogenic

0.55

MetaRNN

Uncertain

0.57

MetaSVM

Pathogenic

0.84

MutationAssessor

Benign

1.1

PhyloP100

1.7

PrimateAI

Pathogenic

0.82

PROVEAN

Benign

-1.2

REVEL

Uncertain

0.53

Sift

Benign

0.54

Sift4G

Benign

0.25

Polyphen

0.88

Vest4

0.42

MutPred

0.75

Loss of phosphorylation at S937 (P = 5e-04)

MVP

0.77

MPC

0.56

ClinPred

0.11

GERP RS

5.0

Varity_R

0.25

gMVP

0.59

Mutation Taster

=8/92

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.12

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over