5-55231323-G-C

Position:

• chr5-55231323-G-C

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_021147.5(CCNO):​c.*52C>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00261 in 1,596,966 control chromosomes in the GnomAD database, including 75 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.013 (38 hom., cov: 33)
  • Exomes 𝑓: 0.0015 (37 hom.)
• Consequence: CCNO NM_021147.5 3_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.953

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 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.74).
• BP6: Variant 5-55231323-G-C is Benign according to our data. Variant chr5-55231323-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 3252279.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.013 (1986/152326) while in subpopulation AFR AF= 0.0442 (1839/41568). AF 95% confidence interval is 0.0426. There are 38 homozygotes in gnomad4. There are 972 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 38 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CCNO	NM_021147.5	c.*52C>G		3_prime_UTR_variant	3/3	ENST00000282572.5	NP_066970.3
CCNO	NR_125346.2	n.1566C>G		non_coding_transcript_exon_variant	3/3
CCNO	NR_125347.2	n.1195C>G		non_coding_transcript_exon_variant	3/3
CCNO	NR_125348.1	n.1169C>G		non_coding_transcript_exon_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCNO	ENST00000282572	c.*52C>G		3_prime_UTR_variant	3/3	1	NM_021147.5	ENSP00000282572.4
CCNO	ENST00000501463.2	n.*1085C>G		non_coding_transcript_exon_variant	3/3	1		ENSP00000422485.1
CCNO	ENST00000501463.2	n.*1085C>G		3_prime_UTR_variant	3/3	1		ENSP00000422485.1

Frequencies

GnomAD3 genomes AF: 0.0130 AC: 1979 AN: 152208 Hom.: 38 Cov.: 33

Gnomad AFR AF: 0.0443

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00589

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000385

Gnomad SAS AF: 0.00352

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000132

Gnomad OTH AF: 0.0120

GnomAD4 exome AF: 0.00151 AC: 2175 AN: 1444640 Hom.: 37 Cov.: 30 AF XY: 0.00135 AC XY: 965 AN XY: 716604

Gnomad4 AFR exome AF: 0.0482

Gnomad4 AMR exome AF: 0.00199

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000253

Gnomad4 SAS exome AF: 0.00209

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000907

Gnomad4 OTH exome AF: 0.00316

GnomAD4 genome AF: 0.0130 AC: 1986 AN: 152326 Hom.: 38 Cov.: 33 AF XY: 0.0130 AC XY: 972 AN XY: 74488

Gnomad4 AFR AF: 0.0442

Gnomad4 AMR AF: 0.00588

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000386

Gnomad4 SAS AF: 0.00373

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000132

Gnomad4 OTH AF: 0.0133

Alfa AF: 0.00187 Hom.: 1

Bravo AF: 0.0151

Asia WGS AF: 0.00982 AC: 34 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

May 24, 2021

See Variant Classification Assertion Criteria. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.74
CADD	Benign	6.7
DANN	Benign	0.65

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

Other links and lift over

dbSNP: rs114847312; hg19: chr5-54527151;