rs368155527

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 2P and 15B. PM2BP4_ModerateBP6_Very_StrongBP7BS1

The NM_021147.5(CCNO):c.354G>A(p.Pro118=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000225 in 1,546,854 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 Likely benign (★★).

Frequency

Genomes: 𝑓 0.0013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

CCNO
NM_021147.5 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.0850

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 Benign. Variant got -13 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.28).

BP6

Variant 5-55233170-C-T is Benign according to our data. Variant chr5-55233170-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 416792.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.085 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00127 (193/152026) while in subpopulation AFR AF= 0.00436 (181/41488). AF 95% confidence interval is 0.00384. There are 0 homozygotes in gnomad4. There are 82 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CCNO	NM_021147.5 linkuse as main transcript	c.354G>A	p.Pro118=	synonymous_variant	1/3	ENST00000282572.5
CCNO	NR_125346.2 linkuse as main transcript	n.439G>A		non_coding_transcript_exon_variant	1/3
CCNO	NR_125347.2 linkuse as main transcript	n.439G>A		non_coding_transcript_exon_variant	1/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CCNO	ENST00000282572.5 linkuse as main transcript	c.354G>A	p.Pro118=	synonymous_variant	1/3	1	NM_021147.5	P1	P22674-1
CCNO	ENST00000501463.2 linkuse as main transcript	c.354G>A	p.Pro118=	synonymous_variant, NMD_transcript_variant	1/3	1			P22674-2

Frequencies

GnomAD3 genomes

AF:

0.00128

AC:

194

AN:

151908

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00440

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000721

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:

0.000480

GnomAD3 exomes

AF:

0.000302

AC:

AN:

142586

Hom.:

AF XY:

0.000207

AC XY:

AN XY:

77248

show subpopulations

Gnomad AFR exome

AF:

0.00542

Gnomad AMR exome

AF:

0.000123

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000111

AC:

155

AN:

1394828

Hom.:

Cov.:

AF XY:

0.000100

AC XY:

AN XY:

688372

show subpopulations

Gnomad4 AFR exome

AF:

0.00424

Gnomad4 AMR exome

AF:

0.000253

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:

9.26e-7

Gnomad4 OTH exome

AF:

0.000173

GnomAD4 genome

AF:

0.00127

AC:

193

AN:

152026

Hom.:

Cov.:

AF XY:

0.00110

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.00436

Gnomad4 AMR

AF:

0.000720

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:

0.000475

Alfa

AF:

0.000890

Hom.:

Bravo

AF:

0.00152

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 21, 2024

- -

CCNO-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 25, 2019

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.28

Cadd

Benign

Dann

Benign

0.95

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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