rs750033880

Positions:

chr7-66633302-G-A

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1PM2PP3_Strong

The NM_153033.5(KCTD7):c.172G>A(p.Gly58Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,613,742 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/20 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

KCTD7
NM_153033.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter P:2U:1

Conservation

PhyloP100: 9.28

Variant links:

Genes affected

KCTD7 (HGNC:21957): (potassium channel tetramerization domain containing 7) This gene encodes a member of the potassium channel tetramerization domain-containing protein family. Family members are identified on a structural basis and contain an amino-terminal domain similar to the T1 domain present in the voltage-gated potassium channel. Mutations in this gene have been associated with progressive myoclonic epilepsy-3. Alternative splicing results in multiple transcript variants.[provided by RefSeq, Jan 2011]

KCTD7 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

PM1

In a domain BTB (size 98) in uniprot entity KCTD7_HUMAN there are 5 pathogenic changes around while only 1 benign (83%) in NM_153033.5

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.986

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KCTD7	NM_153033.5 linkuse as main transcript	c.172G>A	p.Gly58Arg	missense_variant	2/4	ENST00000639828.2	NP_694578.1
KCTD7	NM_001167961.2 linkuse as main transcript	c.172G>A	p.Gly58Arg	missense_variant	2/5		NP_001161433.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCTD7	ENST00000639828.2 linkuse as main transcript	c.172G>A	p.Gly58Arg	missense_variant	2/4	2	NM_153033.5	ENSP00000492240	A1	Q96MP8-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152098

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000684

AC:

AN:

1461644

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727126

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000899

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152098

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74306

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:2Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Progressive myoclonic epilepsy type 3

Pathogenic:1Uncertain:1

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Aug 09, 2022	Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. ClinVar contains an entry for this variant (Variation ID: 469100). This missense change has been observed in individual(s) with clinical features of KCTD7-related conditions (PMID: 29302074, 30500434). This variant is present in population databases (rs750033880, gnomAD 0.0009%). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 58 of the KCTD7 protein (p.Gly58Arg). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Likely pathogenic, no assertion criteria provided	clinical testing	IRCCS Fondazione Stella Maris, University of Pisa	Aug 08, 2017	progressive epilepsy -

Epilepsy, progressive myoclonic, 3, with intracellular inclusions

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Feb 29, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Pathogenic

0.32

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.85

D;.;.;.;.;.

Eigen

Pathogenic

0.91

Eigen_PC

Pathogenic

0.83

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.97

D;D;D;D;D;D

M_CAP

Pathogenic

0.29

MetaRNN

Pathogenic

0.99

D;D;D;D;D;D

MetaSVM

Uncertain

0.30

MutationAssessor

Pathogenic

3.9

H;.;.;H;.;.

MutationTaster

Benign

0.96

PrimateAI

Pathogenic

0.88

PROVEAN

Pathogenic

-7.8

.;D;.;D;.;.

REVEL

Pathogenic

0.76

Sift

Pathogenic

0.0

.;D;.;D;.;.

Sift4G

Pathogenic

0.0

.;D;.;D;.;.

Polyphen

1.0

D;.;.;.;.;.

Vest4

0.94, 0.95

MutPred

0.94

Gain of methylation at G58 (P = 0.0541);Gain of methylation at G58 (P = 0.0541);Gain of methylation at G58 (P = 0.0541);Gain of methylation at G58 (P = 0.0541);Gain of methylation at G58 (P = 0.0541);Gain of methylation at G58 (P = 0.0541);

MVP

0.90

ClinPred

1.0

GERP RS

4.8

Varity_R

0.79

gMVP

0.92

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

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