rs189118723

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP6BS1

The NM_017950.4(CCDC40):​c.856-18G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00025 in 1,611,288 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 0.0014 ( 1 hom., cov: 31)
Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

CCDC40
NM_017950.4 intron

Scores

2

Clinical Significance

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

Conservation

PhyloP100: 0.463
Variant links:
Genes affected
CCDC40 (HGNC:26090): (coiled-coil domain 40 molecular ruler complex subunit) This gene encodes a protein that is necessary for motile cilia function. It functions in correct left-right axis formation by regulating the assembly of the inner dynein arm and the dynein regulatory complexes, which control ciliary beat. Mutations in this gene cause ciliary dyskinesia type 15, a disorder due to defects in cilia motility. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2011]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP6
Variant 17-80049888-G-A is Benign according to our data. Variant chr17-80049888-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 260980.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=1}.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00141 (215/152198) while in subpopulation AFR AF= 0.00498 (207/41544). AF 95% confidence interval is 0.00443. There are 1 homozygotes in gnomad4. There are 76 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
CCDC40NM_017950.4 linkuse as main transcriptc.856-18G>A intron_variant ENST00000397545.9 NP_060420.2
CCDC40NM_001243342.2 linkuse as main transcriptc.856-18G>A intron_variant NP_001230271.1
CCDC40NM_001330508.2 linkuse as main transcriptc.856-18G>A intron_variant NP_001317437.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
CCDC40ENST00000397545.9 linkuse as main transcriptc.856-18G>A intron_variant 5 NM_017950.4 ENSP00000380679 P2Q4G0X9-1
ENST00000695611.1 linkuse as main transcriptn.1432-2369C>T intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes
AF:
0.00140
AC:
213
AN:
152080
Hom.:
1
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.00495
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000328
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:
0.0000147
Gnomad OTH
AF:
0.000957
GnomAD3 exomes
AF:
0.000353
AC:
88
AN:
249450
Hom.:
0
AF XY:
0.000251
AC XY:
34
AN XY:
135366
show subpopulations
Gnomad AFR exome
AF:
0.00517
Gnomad AMR exome
AF:
0.000232
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:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000129
AC:
188
AN:
1459090
Hom.:
0
Cov.:
32
AF XY:
0.000116
AC XY:
84
AN XY:
726062
show subpopulations
Gnomad4 AFR exome
AF:
0.00461
Gnomad4 AMR exome
AF:
0.000246
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000348
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000180
Gnomad4 OTH exome
AF:
0.000299
GnomAD4 genome
AF:
0.00141
AC:
215
AN:
152198
Hom.:
1
Cov.:
31
AF XY:
0.00102
AC XY:
76
AN XY:
74398
show subpopulations
Gnomad4 AFR
AF:
0.00498
Gnomad4 AMR
AF:
0.000327
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.000947
Alfa
AF:
0.000854
Hom.:
0
Bravo
AF:
0.00151
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingCenter for Pediatric Genomic Medicine, Children's Mercy Hospital and ClinicsApr 28, 2017- -
not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
Primary ciliary dyskinesia Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 05, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.86
CADD
Benign
14
DANN
Benign
0.33

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.27
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.27
Position offset: 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.

Other links and lift over

dbSNP: rs189118723; hg19: chr17-78023687; API