Variant 2-200490296-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_152387.4(KCTD18):c.1085C>G(p.Ala362Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000533 in 1,614,234 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000054 ( 0 hom. )

Consequence

KCTD18
NM_152387.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.59

Variant links:

Genes affected

KCTD18 (HGNC:26446): (potassium channel tetramerization domain containing 18) Predicted to be involved in protein homooligomerization. [provided by Alliance of Genome Resources, Apr 2022]

KCTD18 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.03907442).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
KCTD18	NM_152387.4 linkuse as main transcript	c.1085C>G	p.Ala362Gly	missense_variant	7/7	ENST00000359878.8	NP_689600.2
KCTD18	NM_001321547.2 linkuse as main transcript	c.1085C>G	p.Ala362Gly	missense_variant	7/7		NP_001308476.1
KCTD18	NM_001321548.2 linkuse as main transcript	c.458C>G	p.Ala153Gly	missense_variant	7/7		NP_001308477.1
KCTD18	NM_001321550.2 linkuse as main transcript	c.458C>G	p.Ala153Gly	missense_variant	7/7		NP_001308479.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KCTD18	ENST00000359878.8 linkuse as main transcript	c.1085C>G	p.Ala362Gly	missense_variant	7/7	1	NM_152387.4	ENSP00000352941	P1	Q6PI47-1
KCTD18	ENST00000409157.5 linkuse as main transcript	c.1085C>G	p.Ala362Gly	missense_variant	7/7	1		ENSP00000386751	P1	Q6PI47-1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000835

AC:

AN:

251458

Hom.:

AF XY:

0.000118

AC XY:

AN XY:

135914

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000167

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000540

AC:

AN:

1461874

Hom.:

Cov.:

AF XY:

0.0000495

AC XY:

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.0000665

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000459

AC:

AN:

152360

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74510

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000900

Hom.:

Bravo

AF:

0.0000982

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000132

AC:

EpiCase

AF:

0.000545

EpiControl

AF:

0.000296

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

Jan 23, 2024

The c.1085C>G (p.A362G) alteration is located in exon 7 (coding exon 6) of the KCTD18 gene. This alteration results from a C to G substitution at nucleotide position 1085, causing the alanine (A) at amino acid position 362 to be replaced by a glycine (G). 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

0.087

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.59

CADD

Benign

DANN

Benign

0.95

DEOGEN2

Benign

0.0047

T;T

Eigen

Benign

-0.82

Eigen_PC

Benign

-0.86

FATHMM_MKL

Benign

0.087

LIST_S2

Benign

0.71

.;T

M_CAP

Benign

0.020

MetaRNN

Benign

0.039

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.0

M;M

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.31

N;N

REVEL

Benign

0.029

Sift

Benign

0.12

T;T

Sift4G

Uncertain

0.027

D;D

Polyphen

0.42

B;B

Vest4

0.078

MVP

0.58

MPC

0.25

ClinPred

0.047

GERP RS

1.9

Varity_R

0.022

gMVP

0.27

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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