Genetic Variant CDK18:p.Arg104Cys (chr1-205524268-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_212502.3(CDK18):c.310C>T(p.Arg104Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000867 in 1,614,076 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000090 ( 0 hom. )

Consequence

CDK18
NM_212502.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.01

Variant links:

Genes affected

CDK18 (HGNC:8751): (cyclin dependent kinase 18) Predicted to enable ATP binding activity; cyclin-dependent protein serine/threonine kinase activity; and protein serine kinase activity. Predicted to be involved in protein phosphorylation and regulation of transcription involved in G1/S transition of mitotic cell cycle. Predicted to be active in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

CDK18 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDK18	NM_212502.3 link	c.310C>T	p.Arg104Cys	missense_variant	Exon 4 of 16	ENST00000429964.7	NP_997667.1	Q07002-2A0A024R996Q59G02

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDK18	ENST00000429964.7 link	c.310C>T	p.Arg104Cys	missense_variant	Exon 4 of 16	1	NM_212502.3	ENSP00000399082.2		Q07002-2

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152224

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:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000115

AC:

AN:

251480

Hom.:

AF XY:

0.000132

AC XY:

AN XY:

135916

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000425

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000132

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000903

AC:

132

AN:

1461852

Hom.:

Cov.:

AF XY:

0.000116

AC XY:

AN XY:

727222

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000464

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000737

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74358

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:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000180

Hom.:

Bravo

AF:

0.0000567

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.000132

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 20, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.400C>T (p.R134C) alteration is located in exon 4 (coding exon 3) of the CDK18 gene. This alteration results from a C to T substitution at nucleotide position 400, causing the arginine (R) at amino acid position 134 to be replaced by a cysteine (C). 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

0.18

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Pathogenic

0.26

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.092

.;.;.;T;T;T;T

Eigen

Pathogenic

0.71

Eigen_PC

Uncertain

0.65

FATHMM_MKL

Uncertain

0.92

LIST_S2

Pathogenic

0.99

.;D;D;D;D;D;D

M_CAP

Uncertain

0.15

MetaRNN

Uncertain

0.70

D;D;D;D;D;D;D

MetaSVM

Uncertain

0.087

PrimateAI

Uncertain

0.61

PROVEAN

Pathogenic

-6.0

D;D;D;D;D;D;D

REVEL

Uncertain

0.37

Sift

Pathogenic

0.0

D;D;D;D;D;D;D

Sift4G

Uncertain

0.0050

D;D;D;D;D;D;D

Polyphen

1.0

.;D;.;.;.;.;.

Vest4

0.80

MVP

0.89

MPC

0.93

ClinPred

0.90

GERP RS

4.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.59

gMVP

0.56

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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