dbSNP rs142744007: KCNV2:p.Gln361His (chr9-2718822-A-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_133497.4(KCNV2):c.1083A>C(p.Gln361His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,457,566 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. Q361Q) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

KCNV2
NM_133497.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.518

Publications

0 publications found

Variant links:

Genes affected

KCNV2 (HGNC:19698): (potassium voltage-gated channel modifier subfamily V member 2) 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 voltage-gated channel subfamily V. This member is identified as a 'silent subunit', and it does not form homomultimers, but forms heteromultimers with several other subfamily members. Through obligatory heteromerization, it exerts a function-altering effect on other potassium channel subunits. This protein is strongly expressed in pancreas and has a weaker expression in several other tissues. [provided by RefSeq, Jul 2008]

KCNV2 Gene-Disease associations (from GenCC):

cone dystrophy with supernormal rod response
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae)
inherited retinal dystrophy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen

KCNV2 links:

ENSG00000286670 (HGNC:):

ENSG00000286670 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.17970291).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KCNV2	NM_133497.4 link	c.1083A>C	p.Gln361His	missense_variant	Exon 1 of 2	ENST00000382082.4	NP_598004.1	Q8TDN2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
KCNV2	ENST00000382082.4 link	c.1083A>C	p.Gln361His	missense_variant	Exon 1 of 2	1	NM_133497.4	ENSP00000371514.3	Q8TDN2
ENSG00000286670	ENST00000768783.1 link	n.113+27476T>G		intron_variant	Intron 1 of 3
ENSG00000286670	ENST00000768784.1 link	n.156+13123T>G		intron_variant	Intron 1 of 3
ENSG00000286670	ENST00000768785.1 link	n.156+13123T>G		intron_variant	Intron 1 of 2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.86e-7

AC:

AN:

1457566

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

725376

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26116

East Asian (EAS)

AF:

0.00

AC:

AN:

39692

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49314

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111880

Other (OTH)

AF:

0.00

AC:

AN:

60350

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.094

BayesDel_addAF

Uncertain

0.022

BayesDel_noAF

Benign

-0.21

CADD

Benign

5.4

(source)

DANN

Benign

0.72

DEOGEN2

Benign

0.35

Eigen

Benign

-0.94

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.093

LIST_S2

Benign

0.29

M_CAP

Benign

0.046

MetaRNN

Benign

0.18

MetaSVM

Benign

-0.88

MutationAssessor

Benign

-0.49

PhyloP100

0.52

PrimateAI

Benign

0.24

PROVEAN

Benign

-0.85

REVEL

Benign

0.27

Sift

Benign

0.075

Sift4G

Benign

0.12

Polyphen

0.0

Vest4

0.24

MutPred

0.47

Loss of helix (P = 0.1299);

MVP

0.93

MPC

0.017

ClinPred

0.15

GERP RS

-2.1

Varity_R

0.054

gMVP

0.77

Mutation Taster

=97/3

polymorphism

(source)

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

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over