14-99502970-G-T

Position:

chr14-99502970-G-T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_001099402.2(CCNK):c.997G>T(p.Val333Phe) variant causes a missense change. The variant allele was found at a frequency of 0.000135 in 1,613,876 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

CCNK
NM_001099402.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.41

Variant links:

Genes affected

CCNK (HGNC:1596): (cyclin K) The protein encoded by this gene is a member of the transcription cyclin family. These cyclins may regulate transcription through their association with and activation of cyclin-dependent kinases (CDK) that phosphorylate the C-terminal domain (CTD) of the large subunit of RNA polymerase II. This gene product may play a dual role in regulating CDK and RNA polymerase II activities. [provided by RefSeq, Jul 2008]

CCNK links:

CCDC85C (HGNC:35459): (coiled-coil domain containing 85C) Predicted to be involved in cerebral cortex development. Located in adherens junction. [provided by Alliance of Genome Resources, Apr 2022]

CCDC85C links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.117574334).

BS2

High AC in GnomAd4 at 11 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
CCNK	NM_001099402.2 linkuse as main transcript	c.997G>T	p.Val333Phe	missense_variant	8/11	ENST00000389879.9	NP_001092872.1
CCDC85C	NM_001144995.2 linkuse as main transcript	c.*12276C>A		3_prime_UTR_variant	6/6	ENST00000380243.9	NP_001138467.1
CCNK	XM_005268154.5 linkuse as main transcript	c.997G>T	p.Val333Phe	missense_variant	8/11		XP_005268211.1
CCNK	XM_047431839.1 linkuse as main transcript	c.997G>T	p.Val333Phe	missense_variant	9/12		XP_047287795.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCNK	ENST00000389879.9 linkuse as main transcript	c.997G>T	p.Val333Phe	missense_variant	8/11	5	NM_001099402.2	ENSP00000374529	P1	O75909-3
CCNK	ENST00000555049.5 linkuse as main transcript	c.997G>T	p.Val333Phe	missense_variant	8/11	1		ENSP00000452307
CCDC85C	ENST00000380243.9 linkuse as main transcript	c.*12276C>A		3_prime_UTR_variant	6/6	5	NM_001144995.2	ENSP00000369592	P1
CCNK	ENST00000553865.1 linkuse as main transcript	n.3523G>T		non_coding_transcript_exon_variant	3/5	1

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000686

AC:

AN:

247734

Hom.:

AF XY:

0.0000521

AC XY:

AN XY:

134436

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000869

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000117

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.000142

AC:

207

AN:

1461690

Hom.:

Cov.:

AF XY:

0.000128

AC XY:

AN XY:

727130

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

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:

0.000180

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000153

Hom.:

Bravo

AF:

0.0000831

ExAC

AF:

0.0000248

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.00

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

Jun 17, 2024

The c.997G>T (p.V333F) alteration is located in exon 8 (coding exon 7) of the CCNK gene. This alteration results from a G to T substitution at nucleotide position 997, causing the valine (V) at amino acid position 333 to be replaced by a phenylalanine (F). 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

0.12

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.21

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.18

T;.

Eigen

Benign

-0.16

Eigen_PC

Benign

-0.051

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.85

T;T

M_CAP

Benign

0.037

MetaRNN

Benign

0.12

T;T

MetaSVM

Uncertain

0.17

MutationAssessor

Benign

0.55

N;.

MutationTaster

Benign

0.53

N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.5

N;N

REVEL

Benign

0.12

Sift

Uncertain

0.023

D;T

Sift4G

Benign

0.69

T;T

Polyphen

0.23

B;.

Vest4

0.11

MVP

0.59

MPC

0.35

ClinPred

0.061

GERP RS

6.0

Varity_R

0.095

gMVP

0.077

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