3-180616694-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_181426.2(CCDC39):c.2408G>A(p.Cys803Tyr) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000551 in 1,586,126 control chromosomes in the GnomAD database, including 11 homozygotes. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. C803C) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00028 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00058 ( 10 hom. )

Consequence

CCDC39
NM_181426.2 missense, splice_region

Scores

Splicing: ADA: 0.0005048

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.83

Publications

2 publications found

Variant links:

Genes affected

CCDC39 (HGNC:25244): (coiled-coil domain 39 molecular ruler complex subunit) The protein encoded by this gene is involved in the motility of cilia and flagella. The encoded protein is essential for the assembly of dynein regulatory and inner dynein arm complexes, which regulate ciliary beat. Defects in this gene are a cause of primary ciliary dyskinesia type 14 (CILD14). [provided by RefSeq, Jul 2011]

CCDC39 links:

TTC14 (HGNC:24697): (tetratricopeptide repeat domain 14) Predicted to enable nucleic acid binding activity. [provided by Alliance of Genome Resources, Apr 2022]

TTC14 links:

ENSG00000145075 (HGNC:):

ENSG00000145075 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0061915517).

BP6

Variant 3-180616694-C-T is Benign according to our data. Variant chr3-180616694-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 262970.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000276 (42/152160) while in subpopulation SAS AF = 0.00872 (42/4814). AF 95% confidence interval is 0.00663. There are 1 homozygotes in GnomAd4. There are 36 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 10 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC39	NM_181426.2 link	c.2408G>A	p.Cys803Tyr	missense_variant, splice_region_variant	Exon 18 of 20	ENST00000476379.6	NP_852091.1
TTC14	NM_001288582.2 link	c.1775-686C>T		intron_variant	Intron 12 of 12		NP_001275511.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC39	ENST00000476379.6 link	c.2408G>A	p.Cys803Tyr	missense_variant, splice_region_variant	Exon 18 of 20	2	NM_181426.2	ENSP00000417960.2

Frequencies

GnomAD3 genomes

AF:

0.000283

AC:

AN:

152042

Hom.:

Cov.:

show subpopulations

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:

0.00892

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00131

AC:

273

AN:

208708

AF XY:

0.00169

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000569

GnomAD4 exome

AF:

0.000580

AC:

832

AN:

1433966

Hom.:

Cov.:

AF XY:

0.000830

AC XY:

590

AN XY:

711178

show subpopulations

African (AFR)

AF:

0.0000303

AC:

AN:

32958

American (AMR)

AF:

0.00

AC:

AN:

40476

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25562

East Asian (EAS)

AF:

0.00

AC:

AN:

38970

South Asian (SAS)

AF:

0.00945

AC:

784

AN:

82978

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51578

Middle Eastern (MID)

AF:

0.000175

AC:

AN:

5714

European-Non Finnish (NFE)

AF:

0.00000456

AC:

AN:

1096496

Other (OTH)

AF:

0.000692

AC:

AN:

59234

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

124

166

207

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.000276

AC:

AN:

152160

Hom.:

Cov.:

AF XY:

0.000484

AC XY:

AN XY:

74384

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41524

American (AMR)

AF:

0.00

AC:

AN:

15270

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00872

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10586

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68004

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.509

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.0000887

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.00110

AC:

132

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Primary ciliary dyskinesia

Benign:1

Dec 04, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Primary ciliary dyskinesia 14

Benign:1

Apr 28, 2017

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign.

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.20

CADD

Uncertain

(source)

DANN

Benign

0.84

DEOGEN2

Benign

0.0020

Eigen

Benign

0.060

Eigen_PC

Benign

0.13

FATHMM_MKL

Uncertain

0.79

LIST_S2

Benign

0.66

MetaRNN

Benign

0.0062

MetaSVM

Benign

-0.72

MutationAssessor

Uncertain

2.5

PhyloP100

1.8

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.73

REVEL

Uncertain

0.36

Sift

Benign

0.38

Sift4G

Benign

1.0

Vest4

0.41

ClinPred

0.043

GERP RS

3.3

PromoterAI

-0.0036

Neutral

(source)

Varity_R

0.064

Mutation Taster

=96/4

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00050

dbscSNV1_RF

Benign

0.086

SpliceAI score (max)

0.21

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.21

Position offset: -36

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over