Genetic Variant CDK20:p.Gly346Gly (chr9-87967465-C-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_001039803.3(CDK20):c.1038G>A(p.Gly346Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000882 in 1,553,716 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00034 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000061 ( 1 hom. )

Consequence

CDK20
NM_001039803.3 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:2

Conservation

PhyloP100: -0.494

Variant links:

Genes affected

CDK20 (HGNC:21420): (cyclin dependent kinase 20) The protein encoded by this gene contains a kinase domain most closely related to the cyclin-dependent protein kinases. The encoded kinase may activate cyclin-dependent kinase 2 and is involved in cell growth. Alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Dec 2009]

CDK20 links:

LOC124902200 (HGNC:):

LOC124902200 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.55).

BP6

Variant 9-87967465-C-T is Benign according to our data. Variant chr9-87967465-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 734152.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-0.494 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CDK20	NM_001039803.3 link	c.1038G>A	p.Gly346Gly	synonymous_variant	Exon 8 of 8	ENST00000325303.9	NP_001034892.1	Q8IZL9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CDK20	ENST00000325303.9 link	c.1038G>A	p.Gly346Gly	synonymous_variant	Exon 8 of 8	1	NM_001039803.3	ENSP00000322343.8		Q8IZL9-1

Frequencies

GnomAD3 genomes

AF:

0.000322

AC:

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00104

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000478

GnomAD3 exomes

AF:

0.0000931

AC:

AN:

161176

Hom.:

AF XY:

0.000118

AC XY:

AN XY:

84786

show subpopulations

Gnomad AFR exome

AF:

0.00110

Gnomad AMR exome

AF:

0.0000400

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000873

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000315

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000607

AC:

AN:

1401438

Hom.:

Cov.:

AF XY:

0.0000738

AC XY:

AN XY:

691406

show subpopulations

Gnomad4 AFR exome

AF:

0.00170

Gnomad4 AMR exome

AF:

0.0000836

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000378

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000102

Gnomad4 OTH exome

AF:

0.000189

GnomAD4 genome

AF:

0.000341

AC:

AN:

152278

Hom.:

Cov.:

AF XY:

0.000336

AC XY:

AN XY:

74450

show subpopulations

Gnomad4 AFR

AF:

0.00111

Gnomad4 AMR

AF:

0.000196

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:

0.000473

Bravo

AF:

0.000393

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

CDK20-related disorder

Benign:1

Oct 29, 2019

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Benign:1

Jan 19, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.55

CADD

Benign

1.3

DANN

Benign

0.44

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

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