rs775051461

Positions:

chr5-55231790-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP5_Moderate

The NM_021147.5(CCNO):c.638T>C(p.Leu213Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000333 in 1,559,878 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

CCNO
NM_021147.5 missense

Scores

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 9.06

Variant links:

Genes affected

CCNO (HGNC:18576): (cyclin O) This gene encodes a member of the cyclin protein family, and the encoded protein is involved in regulation of the cell cycle. Disruption of this gene is associated with primary ciliary dyskinesia-19. Alternative splicing results in multiple transcript variants. This gene, which has a previous symbol of UNG2, was erroneously identified as a uracil DNA glycosylase in PubMed ID: 2001396. A later publication, PubMed ID: 8419333, identified this gene's product as a cyclin protein family member. The UNG2 symbol is also used as a specific protein isoform name for the UNG gene (GeneID 7374), so confusion exists in the scientific literature and in some databases for these two genes. [provided by RefSeq, Jul 2014]

CCNO links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 5-55231790-A-G is Pathogenic according to our data. Variant chr5-55231790-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 411594.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr5-55231790-A-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
CCNO	NM_021147.5 linkuse as main transcript	c.638T>C	p.Leu213Pro	missense_variant	3/3	ENST00000282572.5	NP_066970.3
CCNO	NR_125346.2 linkuse as main transcript	n.1099T>C		non_coding_transcript_exon_variant	3/3
CCNO	NR_125347.2 linkuse as main transcript	n.728T>C		non_coding_transcript_exon_variant	3/3
CCNO	NR_125348.1 linkuse as main transcript	n.702T>C		non_coding_transcript_exon_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCNO	ENST00000282572.5 linkuse as main transcript	c.638T>C	p.Leu213Pro	missense_variant	3/3	1	NM_021147.5	ENSP00000282572	P1	P22674-1
CCNO	ENST00000501463.2 linkuse as main transcript	c.*618T>C		3_prime_UTR_variant, NMD_transcript_variant	3/3	1		ENSP00000422485		P22674-2

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152256

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00230

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:

0.000478

GnomAD3 exomes

AF:

0.0000981

AC:

AN:

163042

Hom.:

AF XY:

0.000149

AC XY:

AN XY:

87258

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000390

Gnomad ASJ exome

AF:

0.00142

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000469

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000305

AC:

AN:

1407622

Hom.:

Cov.:

AF XY:

0.0000417

AC XY:

AN XY:

695118

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00103

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000922

Gnomad4 OTH exome

AF:

0.000120

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152256

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74392

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00230

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000229

Hom.:

Bravo

AF:

0.0000491

ExAC

AF:

0.0000343

AC:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 19, 2023

This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 213 of the CCNO protein (p.Leu213Pro). This variant is present in population databases (rs775051461, gnomAD 0.1%). This missense change has been observed in individual(s) with mucociliary clearance disorder (PMID: 26777464). ClinVar contains an entry for this variant (Variation ID: 411594). 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 CCNO protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects CCNO function (PMID: 26777464). For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Pathogenic

0.17

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.30

Eigen

Pathogenic

0.90

Eigen_PC

Pathogenic

0.86

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.79

M_CAP

Uncertain

0.17

MetaRNN

Uncertain

0.73

MetaSVM

Benign

-0.62

MutationAssessor

Pathogenic

3.5

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.84

PROVEAN

Pathogenic

-5.3

REVEL

Pathogenic

0.81

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.97

MVP

0.72

MPC

1.6

ClinPred

0.87

GERP RS

5.5

Varity_R

0.95

gMVP

0.89

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