NM_181426.2:c.1035G>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3

The NM_181426.2(CCDC39):​c.1035G>C​(p.Arg345Ser) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000118 in 1,520,784 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. 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. R345K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

CCDC39
NM_181426.2 missense, splice_region

Scores

6
11
Splicing: ADA: 0.9992
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.774

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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PP3
Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. Scorers claiming Uncertain: max_spliceai. No scorers claiming Benign.

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.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CCDC39
NM_181426.2
MANE Select
c.1035G>Cp.Arg345Ser
missense splice_region
Exon 9 of 20NP_852091.1Q9UFE4-1

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CCDC39
ENST00000476379.6
TSL:2 MANE Select
c.1035G>Cp.Arg345Ser
missense splice_region
Exon 9 of 20ENSP00000417960.2Q9UFE4-1
CCDC39
ENST00000936067.1
c.942G>Cp.Arg314Ser
missense splice_region
Exon 8 of 19ENSP00000606126.1
CCDC39
ENST00000651046.1
c.843G>Cp.Arg281Ser
missense splice_region
Exon 8 of 19ENSP00000499175.1A0A494C1Q3

Frequencies

GnomAD3 genomes
AF:
0.0000132
AC:
2
AN:
151824
Hom.:
0
Cov.:
32
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:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00
AC:
0
AN:
136662
AF XY:
0.00
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:
0.00
GnomAD4 exome
AF:
0.0000117
AC:
16
AN:
1368960
Hom.:
0
Cov.:
29
AF XY:
0.0000163
AC XY:
11
AN XY:
674758
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
29696
American (AMR)
AF:
0.00
AC:
0
AN:
28126
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
24380
East Asian (EAS)
AF:
0.00
AC:
0
AN:
35436
South Asian (SAS)
AF:
0.00
AC:
0
AN:
72120
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
47226
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5518
European-Non Finnish (NFE)
AF:
0.0000131
AC:
14
AN:
1069490
Other (OTH)
AF:
0.0000351
AC:
2
AN:
56968
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.484
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000132
AC:
2
AN:
151824
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74122
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41302
American (AMR)
AF:
0.00
AC:
0
AN:
15252
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5176
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4812
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10514
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
67980
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.00
Hom.:
0

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Primary ciliary dyskinesia (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.20
BayesDel_addAF
Benign
0.0087
T
BayesDel_noAF
Benign
-0.23
CADD
Benign
21
DANN
Uncertain
0.99
DEOGEN2
Benign
0.027
T
Eigen
Benign
0.036
Eigen_PC
Benign
0.013
FATHMM_MKL
Uncertain
0.89
D
LIST_S2
Benign
0.73
T
MetaRNN
Benign
0.32
T
MetaSVM
Benign
-0.52
T
MutationAssessor
Uncertain
2.7
M
PhyloP100
0.77
PrimateAI
Benign
0.39
T
PROVEAN
Uncertain
-3.0
D
REVEL
Uncertain
0.30
Sift
Uncertain
0.0070
D
Sift4G
Benign
0.22
T
Polyphen
0.82
P
Vest4
0.29
MutPred
0.19
Loss of MoRF binding (P = 0.0105)
MVP
0.89
MPC
0.11
ClinPred
0.94
D
GERP RS
3.1
Varity_R
0.19
Mutation Taster
=71/29
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
1.0
dbscSNV1_RF
Pathogenic
0.95
SpliceAI score (max)
0.33
Details are displayed if max score is > 0.2
DS_AL_spliceai
0.33
Position offset: 0

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

Publications

Other links and lift over

dbSNP: rs770110944; hg19: chr3-180369321; API