3-180644173-G-C

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_181426.2(CCDC39):c.1612C>G(p.Leu538Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000258 in 1,543,608 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 Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L538R) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00017 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00027 ( 0 hom. )

Consequence

CCDC39
NM_181426.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 2.65

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:

ENSG00000145075 (HGNC:):

ENSG00000145075 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.29279763).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC39	NM_181426.2 link	c.1612C>G	p.Leu538Val	missense_variant	Exon 12 of 20	ENST00000476379.6	NP_852091.1	Q9UFE4-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC39	ENST00000476379.6 link	c.1612C>G	p.Leu538Val	missense_variant	Exon 12 of 20	2	NM_181426.2	ENSP00000417960.2		Q9UFE4-1

Frequencies

GnomAD3 genomes

AF:

0.000171

AC:

AN:

151918

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000353

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000124

AC:

AN:

152808

Hom.:

AF XY:

0.000136

AC XY:

AN XY:

80820

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000301

Gnomad OTH exome

AF:

0.000236

GnomAD4 exome

AF:

0.000267

AC:

372

AN:

1391690

Hom.:

Cov.:

AF XY:

0.000248

AC XY:

170

AN XY:

686284

show subpopulations

Gnomad4 AFR exome

AF:

0.0000638

Gnomad4 AMR exome

AF:

0.00

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:

0.000339

Gnomad4 OTH exome

AF:

0.0000867

GnomAD4 genome

AF:

0.000171

AC:

AN:

151918

Hom.:

Cov.:

AF XY:

0.0000944

AC XY:

AN XY:

74190

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000353

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000537

Hom.:

Bravo

AF:

0.000166

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000142

AC:

ExAC

AF:

0.0000556

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Uncertain:3

Nov 12, 2020

UNC Molecular Genetics Laboratory, University of North Carolina at Chapel Hill

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Aug 28, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces leucine with valine at codon 538 of the CCDC39 protein (p.Leu538Val). The leucine residue is moderately conserved and there is a small physicochemical difference between leucine and valine. This variant is present in population databases (rs377319302, ExAC 0.01%). This variant has not been reported in the literature in individuals affected with CCDC39-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Jan 15, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1612C>G (p.L538V) alteration is located in exon 12 (coding exon 12) of the CCDC39 gene. This alteration results from a C to G substitution at nucleotide position 1612, causing the leucine (L) at amino acid position 538 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.38

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.037

Eigen

Uncertain

0.29

Eigen_PC

Benign

0.15

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.79

M_CAP

Benign

0.0097

MetaRNN

Benign

0.29

MetaSVM

Benign

-0.98

MutationAssessor

Pathogenic

3.0

PrimateAI

Benign

0.44

PROVEAN

Uncertain

-2.9

REVEL

Benign

0.17

Sift

Pathogenic

0.0

Sift4G

Benign

0.22

Polyphen

1.0

Vest4

0.30

MVP

0.59

MPC

0.26

ClinPred

0.35

GERP RS

1.5

Varity_R

0.33

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

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