Variant 15-59116871-A-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_004701.4(CCNB2):c.779A>C(p.Glu260Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,216 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Consequence

CCNB2
NM_004701.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.43

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 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.37911).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CCNB2	NM_004701.4 linkuse as main transcript	c.779A>C	p.Glu260Ala	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.779A>C	p.Glu260Ala	missense_variant	6/9	1	NM_004701.4	P1
CCNB2	ENST00000621385.1 linkuse as main transcript	c.779A>C	p.Glu260Ala	missense_variant	6/8	1
CCNB2	ENST00000559622.5 linkuse as main transcript	c.536A>C	p.Glu179Ala	missense_variant	4/6	5
CCNB2	ENST00000559301.1 linkuse as main transcript	n.105A>C		non_coding_transcript_exon_variant	1/3	2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152216

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74354

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:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

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 05, 2024

The c.779A>C (p.E260A) alteration is located in exon 6 (coding exon 6) of the CCNB2 gene. This alteration results from a A to C substitution at nucleotide position 779, causing the glutamic acid (E) at amino acid position 260 to be replaced by an alanine (A). 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

0.16

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Uncertain

0.97

DEOGEN2

Benign

0.16

T;T;.

Eigen

Benign

0.036

Eigen_PC

Benign

0.22

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Benign

0.0059

MetaRNN

Benign

0.38

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.1

M;.;.

MutationTaster

Benign

0.98

D;D

PrimateAI

Uncertain

0.56

PROVEAN

Benign

-1.2

N;N;.

REVEL

Benign

0.14

Sift

Benign

0.27

T;T;.

Sift4G

Benign

0.27

T;T;T

Polyphen

0.0

B;.;.

Vest4

0.37

MutPred

0.55

Gain of methylation at K258 (P = 0.085);.;Gain of methylation at K258 (P = 0.085);

MVP

0.50

MPC

0.16

ClinPred

0.77

GERP RS

5.2

Varity_R

0.11

gMVP

0.29

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