Genetic Variant NM_181426.2:c.1818T>C (chr3-180642049-A-G) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_StrongBP6BP7

The NM_181426.2(CCDC39):c.1818T>C(p.His606His) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000483 in 1,609,826 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00049 ( 1 hom. )

Consequence

CCDC39
NM_181426.2 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 0.371

Publications

1 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 Gene-Disease associations (from GenCC):

primary ciliary dyskinesia 14
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae)
primary ciliary dyskinesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

CCDC39 links:

ENSG00000145075 (HGNC:):

ENSG00000145075 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.63).

BP6

Variant 3-180642049-A-G is Benign according to our data. Variant chr3-180642049-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 344265.

BP7

Synonymous conserved (PhyloP=0.371 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_181426.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CCDC39	NM_181426.2	MANE Select	c.1818T>C	p.His606His	synonymous	Exon 13 of 20	NP_852091.1	Q9UFE4-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CCDC39	ENST00000476379.6	TSL:2 MANE Select	c.1818T>C	p.His606His	synonymous	Exon 13 of 20	ENSP00000417960.2	Q9UFE4-1
CCDC39	ENST00000936067.1		c.1725T>C	p.His575His	synonymous	Exon 12 of 19	ENSP00000606126.1
CCDC39	ENST00000651046.1		c.1626T>C	p.His542His	synonymous	Exon 12 of 19	ENSP00000499175.1	A0A494C1Q3

Frequencies

GnomAD3 genomes

AF:

0.000460

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00198

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000603

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000490

AC:

121

AN:

246826

AF XY:

0.000493

show subpopulations

Gnomad AFR exome

AF:

0.0000650

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00260

Gnomad NFE exome

AF:

0.000490

Gnomad OTH exome

AF:

0.00101

GnomAD4 exome

AF:

0.000486

AC:

708

AN:

1457566

Hom.:

Cov.:

AF XY:

0.000459

AC XY:

333

AN XY:

724904

show subpopulations

African (AFR)

AF:

0.0000900

AC:

AN:

33322

American (AMR)

AF:

0.00

AC:

AN:

44372

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26024

East Asian (EAS)

AF:

0.00

AC:

AN:

39542

South Asian (SAS)

AF:

0.0000820

AC:

AN:

85334

European-Finnish (FIN)

AF:

0.00297

AC:

158

AN:

53284

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.000467

AC:

518

AN:

1109726

Other (OTH)

AF:

0.000365

AC:

AN:

60204

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

106

141

176

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:

0.000460

AC:

AN:

152260

Hom.:

Cov.:

AF XY:

0.000470

AC XY:

AN XY:

74462

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41554

American (AMR)

AF:

0.000262

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.000207

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00198

AC:

AN:

10624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000603

AC:

AN:

67978

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

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:

0.000689

Hom.:

Bravo

AF:

0.000287

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Primary ciliary dyskinesia (2)

Primary ciliary dyskinesia 14 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.63

CADD

Benign

4.7

(source)

DANN

Benign

0.38

PhyloP100

0.37

Mutation Taster

=100/0

polymorphism

(source)

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

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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

Computational scores

Splicing

Publications

Other links and lift over