rs587777620

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PM1PM2PP3PP5_Very_Strong

The NM_001759.4(CCND2):c.839C>A(p.Thr280Asn) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,830 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CCND2
NM_001759.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:10O:1

Conservation

PhyloP100: 7.18

Variant links:

Genes affected

CCND2 (HGNC:1583): (cyclin D2) The protein encoded by this gene belongs to the highly conserved cyclin family, whose members are characterized by a dramatic periodicity in protein abundance through the cell cycle. Cyclins function as regulators of CDK kinases. Different cyclins exhibit distinct expression and degradation patterns which contribute to the temporal coordination of each mitotic event. This cyclin forms a complex with CDK4 or CDK6 and functions as a regulatory subunit of the complex, whose activity is required for cell cycle G1/S transition. This protein has been shown to interact with and be involved in the phosphorylation of tumor suppressor protein Rb. Knockout studies of the homologous gene in mouse suggest the essential roles of this gene in ovarian granulosa and germ cell proliferation. High level expression of this gene was observed in ovarian and testicular tumors. Mutations in this gene are associated with megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome 3 (MPPH3). [provided by RefSeq, Sep 2014]

CCND2 links:

ENSG00000285901 (HGNC:):

ENSG00000285901 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 13 ACMG points.

PM1

In a modified_residue Phosphothreonine (size 0) in uniprot entity CCND2_HUMAN

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.766

PP5

Variant 12-4299978-C-A is Pathogenic according to our data. Variant chr12-4299978-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 143983.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCND2	NM_001759.4 link	c.839C>A	p.Thr280Asn	missense_variant	Exon 5 of 5	ENST00000261254.8	NP_001750.1	P30279-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCND2	ENST00000261254.8 link	c.839C>A	p.Thr280Asn	missense_variant	Exon 5 of 5	1	NM_001759.4	ENSP00000261254.3		P30279-1
ENSG00000285901	ENST00000674624.1 link	n.720+10988C>A		intron_variant	Intron 4 of 9			ENSP00000501898.1		A0A6Q8PFP0

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

152114

Hom.:

Cov.:

FAILED QC

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461830

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727224

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:

0.00

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

152114

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74310

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:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:10Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome 3

Pathogenic:6Other:1

Mar 08, 2024

3billion

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The variant is not observed in the gnomAD v2.1.1 dataset. Predicted Consequence/Location: Missense variant In silico tool predictions suggest damaging effect of the variant on gene or gene product [REVEL: 0.79 (>=0.6, sensitivity 0.68 and specificity 0.92); 3Cnet: 0.89 (>=0.6, sensitivity 0.72 and precision 0.9)]. Same nucleotide change resulting in same amino acid change has been previously reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000143983 /PMID: 24705253). The variant has been previously reported as assumed (i.e. paternity and maternity not confirmed) de novo in at least two similarly affected unrelated individuals (PMID: 24705253). Different missense changes at the same codon (p.Thr280Ala, p.Thr280Ile) have been reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000143981, VCV000666559 /PMID: 24705253, 29642246). Therefore, this variant is classified as Pathogenic according to the recommendation of ACMG/AMP guideline. -

GeneReviews

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

- -

Dec 03, 2018

Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

The heterozygous p.Thr280Asn variant in CCND2 was identified by our study in one individual with megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome. Trio exome analysis showed this variant to be de novo. The variant was absent from large population studies. Computational prediction tools and conservation analyses suggest that this variant may impact the protein, though this information is not predictive enough to determine pathogenicity. The p.Thr280Asn variant in CCND2 has been reported in 5 individuals with megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome. Trio analysis in the literature showed this variant to be de novo in 4 of those individuals and unknown in one individual (PMID: 24705253). In summary, the p.Thr280Asn variant is pathogenic based off of our findings and multiple de novo reports in the literature. ACMG/AMP Criteria applied: PM2, PS2, PM6_Strong, PP3 (Richards 2015). -

May 01, 2014

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Jan 10, 2019

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was determined to be pathogenic according to ACMG Guidelines, 2015 [PMID:25741868]. This variant has been previously reported to occur de novo in three patients with MPPH [PMID 24705253] -

Dec 26, 2017

Institute for Genomic Medicine (IGM) Clinical Laboratory, Nationwide Children's Hospital

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

[ACMG/AMP: PS2, PM1, PM2, PS4_Moderate, PP5] This alteration is de novo in origin as it was not detected in the submitted parental specimens (identity confirmed) [PS2], is located in a mutational hotspot and/or critical and well-established functional domain [PM1], is absent from or rarely observed in large-scale population databases [PM2], has previously been observed in multiple unrelated patients with the same phenotype [PS4_Moderate], was reported as a pathogenic/likely pathogenic alteration by a reputable source (ClinVar or other correspondence from a clinical testing laboratory) [PP5]. -

Nov 09, 2021

Institute of Human Genetics, Clinical Exome/Genome Diagnostics Group, University Hospital Bonn

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PS4_moderate, PM1, PM2, PP3 -

not provided

Pathogenic:3

Apr 01, 2022

CeGaT Center for Human Genetics Tuebingen

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

CCND2: PM6:Strong, PM1, PM2, PM5, PS4:Moderate -

Sep 27, 2023

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 24705253, 32371413) -

May 23, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant disrupts the p.Thr280 amino acid residue in CCND2. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 31056854). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt CCND2 protein function. ClinVar contains an entry for this variant (Variation ID: 143983). This missense change has been observed in individual(s) with megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome (PMID: 24705253). In at least one individual the variant was observed to be de novo. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces threonine, which is neutral and polar, with asparagine, which is neutral and polar, at codon 280 of the CCND2 protein (p.Thr280Asn). -

Seizure

Pathogenic:1

Apr 05, 2021

Yale Center for Mendelian Genomics, Yale University

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.96

BayesDel_addAF

Benign

-0.035

BayesDel_noAF

Benign

-0.29

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.88

Eigen

Pathogenic

0.86

Eigen_PC

Pathogenic

0.79

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.95

M_CAP

Uncertain

0.19

MetaRNN

Pathogenic

0.77

MetaSVM

Benign

-0.80

MutationAssessor

Pathogenic

3.4

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-4.2

REVEL

Pathogenic

0.79

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0030

Polyphen

1.0

Vest4

0.63

MutPred

0.53

Loss of phosphorylation at T280 (P = 0.0309);

MVP

0.70

MPC

2.3

ClinPred

0.99

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.79

gMVP

0.79

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