Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_021147.5(CCNO):c.258_262dupGGCCC(p.Gln88ArgfsTer8) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00011 in 1,589,494 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 1 hom. )

Consequence

CCNO
NM_021147.5 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:10

Conservation

PhyloP100: 0.939

Publications

8 publications found

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:

CCNO-DT (HGNC:55543): (CCNO divergent transcript)

CCNO-DT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 16 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PP5

Variant 5-55233261-T-TGGGCC is Pathogenic according to our data. Variant chr5-55233261-T-TGGGCC is described in ClinVar as Pathogenic. ClinVar VariationId is 139600.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021147.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CCNO	NM_021147.5	MANE Select	c.258_262dupGGCCC	p.Gln88ArgfsTer8	frameshift	Exon 1 of 3	NP_066970.3
CCNO	NR_125346.2		n.343_347dupGGCCC		non_coding_transcript_exon	Exon 1 of 3
CCNO	NR_125347.2		n.343_347dupGGCCC		non_coding_transcript_exon	Exon 1 of 3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CCNO	ENST00000282572.5	TSL:1 MANE Select	c.258_262dupGGCCC	p.Gln88ArgfsTer8	frameshift	Exon 1 of 3	ENSP00000282572.4
CCNO	ENST00000501463.2	TSL:1	n.258_262dupGGCCC		non_coding_transcript_exon	Exon 1 of 3	ENSP00000422485.1
CCNO-DT	ENST00000749853.1		n.184+38_184+42dupCGGGC		intron	N/A

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152092

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00116

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000133

AC:

AN:

202796

AF XY:

0.000108

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000333

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000567

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000125

Gnomad OTH exome

AF:

0.000194

GnomAD4 exome

AF:

0.000106

AC:

153

AN:

1437284

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

713126

show subpopulations

African (AFR)

AF:

0.0000601

AC:

AN:

33260

American (AMR)

AF:

0.0000244

AC:

AN:

40972

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25576

East Asian (EAS)

AF:

0.000257

AC:

AN:

38932

South Asian (SAS)

AF:

0.000120

AC:

AN:

83382

European-Finnish (FIN)

AF:

0.0000421

AC:

AN:

47542

Middle Eastern (MID)

AF:

0.000527

AC:

AN:

5688

European-Non Finnish (NFE)

AF:

0.000106

AC:

117

AN:

1102412

Other (OTH)

AF:

0.000134

AC:

AN:

59520

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000145

AC:

AN:

152210

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74436

show subpopulations

African (AFR)

AF:

0.000144

AC:

AN:

41558

American (AMR)

AF:

0.0000654

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00117

AC:

AN:

5150

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

67986

Other (OTH)

AF:

0.00

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.516

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000434

Hom.:

ClinVar

ClinVar submissions as Germline

Significance:Pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Primary ciliary dyskinesia 29 (5)

Primary ciliary dyskinesia (3)

not provided (2)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.94

Mutation Taster

=5/195

disease causing (fs/PTC)

(source)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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5-55233261-TGGGCC-TGGGCCGGGCC

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over