4-77161721-C-G

Position:

chr4-77161721-C-G

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_004354.3(CCNG2):c.679C>G(p.Leu227Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000361 in 1,605,380 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000037 ( 0 hom. )

Consequence

CCNG2
NM_004354.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.371

Variant links:

Genes affected

CCNG2 (HGNC:1593): (cyclin G2) The eukaryotic cell cycle is governed by cyclin-dependent protein kinases (CDKs) whose activities are regulated by cyclins and CDK inhibitors. The 8 species of cyclins reported in mammals, cyclins A through H, share a conserved amino acid sequence of about 90 residues called the cyclin box. The amino acid sequence of cyclin G is well conserved among mammals. The nucleotide sequence of cyclin G1 and cyclin G2 are 53% identical. Unlike cyclin G1, cyclin G2 contains a C-terminal PEST protein destabilization motif, suggesting that cyclin G2 expression is tightly regulated through the cell cycle. [provided by RefSeq, Jul 2008]

CCNG2 links:

CCNG2 (HGNC:):

CCNG2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.05298546).

BS2

High AC in GnomAdExome4 at 54 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CCNG2	NM_004354.3 linkuse as main transcript	c.679C>G	p.Leu227Val	missense_variant	6/8	ENST00000316355.10	NP_004345.1	Q16589-1A0A024RDC7
CCNG2	XM_011532398.2 linkuse as main transcript	c.679C>G	p.Leu227Val	missense_variant	6/8		XP_011530700.1	Q16589-1A0A024RDC7
CCNG2	XM_011532399.3 linkuse as main transcript	c.679C>G	p.Leu227Val	missense_variant	6/8		XP_011530701.1	Q16589-1A0A024RDC7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCNG2	ENST00000316355.10 linkuse as main transcript	c.679C>G	p.Leu227Val	missense_variant	6/8	1	NM_004354.3	ENSP00000315743.5		Q16589-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152078

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:

0.000827

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000776

AC:

AN:

244876

Hom.:

AF XY:

0.0000907

AC XY:

AN XY:

132288

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000600

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000893

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.0000372

AC:

AN:

1453184

Hom.:

Cov.:

AF XY:

0.0000540

AC XY:

AN XY:

722710

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000595

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152196

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74410

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:

0.000828

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000412

AC:

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

Feb 07, 2023

The c.679C>G (p.L227V) alteration is located in exon 6 (coding exon 5) of the CCNG2 gene. This alteration results from a C to G substitution at nucleotide position 679, causing the leucine (L) at amino acid position 227 to be replaced by a valine (V). 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

0.10

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.58

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.072

T;T;T;.

Eigen

Benign

-0.54

Eigen_PC

Benign

-0.38

FATHMM_MKL

Benign

0.32

LIST_S2

Benign

0.71

.;.;T;T

M_CAP

Benign

0.0029

MetaRNN

Benign

0.053

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.34

N;N;N;N

PrimateAI

Benign

0.41

PROVEAN

Benign

0.25

N;N;N;N

REVEL

Benign

0.080

Sift

Benign

0.52

T;T;T;T

Sift4G

Benign

0.21

T;T;T;T

Polyphen

0.0

B;B;B;.

Vest4

0.25

MutPred

0.39

Gain of methylation at K232 (P = 0.084);Gain of methylation at K232 (P = 0.084);Gain of methylation at K232 (P = 0.084);Gain of methylation at K232 (P = 0.084);

MVP

0.16

MPC

0.23

ClinPred

0.037

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.10

gMVP

0.28

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