Variant 15-59116746-G-C details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_004701.4(CCNB2):c.654G>C(p.Leu218Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,613,066 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

CCNB2
NM_004701.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.69

Variant links:

Genes affected

CCNB2 (HGNC:1580): (cyclin B2) Cyclin B2 is a member of the cyclin family, specifically the B-type cyclins. The B-type cyclins, B1 and B2, associate with p34cdc2 and are essential components of the cell cycle regulatory machinery. B1 and B2 differ in their subcellular localization. Cyclin B1 co-localizes with microtubules, whereas cyclin B2 is primarily associated with the Golgi region. Cyclin B2 also binds to transforming growth factor beta RII and thus cyclin B2/cdc2 may play a key role in transforming growth factor beta-mediated cell cycle control. [provided by RefSeq, Jul 2008]

CCNB2 links:

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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/exons	MANE	UniProt
CCNB2	NM_004701.4 linkuse as main transcript	c.654G>C	p.Leu218Phe	missense_variant	6/9	ENST00000288207.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
CCNB2	ENST00000288207.7 linkuse as main transcript	c.654G>C	p.Leu218Phe	missense_variant	6/9	1	NM_004701.4	P1
CCNB2	ENST00000621385.1 linkuse as main transcript	c.654G>C	p.Leu218Phe	missense_variant	6/8	1
CCNB2	ENST00000559622.5 linkuse as main transcript	c.411G>C	p.Leu137Phe	missense_variant	4/6	5
CCNB2	ENST00000559301.1 linkuse as main transcript			upstream_gene_variant		2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152154

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:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000137

AC:

AN:

1460912

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

726760

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:

0.0000162

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152154

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74334

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000564

Hom.:

Bravo

AF:

0.00000756

EpiCase

AF:

0.000109

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

Nov 18, 2021

The c.654G>C (p.L218F) alteration is located in exon 6 (coding exon 6) of the CCNB2 gene. This alteration results from a G to C substitution at nucleotide position 654, causing the leucine (L) at amino acid position 218 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

Pathogenic

0.71

BayesDel_addAF

Benign

-0.035

BayesDel_noAF

Benign

-0.29

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.34

T;T;.

Eigen

Pathogenic

0.76

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Uncertain

0.87

LIST_S2

Uncertain

0.96

D;D;D

M_CAP

Benign

0.019

MetaRNN

Uncertain

0.68

D;D;D

MetaSVM

Benign

-0.82

MutationAssessor

Pathogenic

3.5

M;.;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.71

PROVEAN

Uncertain

-2.4

N;N;.

REVEL

Uncertain

0.37

Sift

Uncertain

0.0020

D;D;.

Sift4G

Uncertain

0.0020

D;D;D

Polyphen

0.96

D;.;.

Vest4

0.55

MutPred

0.70

Loss of helix (P = 0.1299);.;Loss of helix (P = 0.1299);

MVP

0.80

MPC

0.54

ClinPred

0.94

GERP RS

4.3

Varity_R

0.64

gMVP

0.69

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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