chr17-80065523-G-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP7

The NM_017950.4(CCDC40):​c.1479G>A​(p.Arg493=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,974 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 29)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

CCDC40
NM_017950.4 synonymous

Scores

2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.10
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;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.55).
BP7
Synonymous conserved (PhyloP=2.1 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
CCDC40NM_017950.4 linkuse as main transcriptc.1479G>A p.Arg493= synonymous_variant 10/20 ENST00000397545.9
LOC124904074XR_007065931.1 linkuse as main transcriptn.305+5709C>T intron_variant, non_coding_transcript_variant
CCDC40NM_001243342.2 linkuse as main transcriptc.1479G>A p.Arg493= synonymous_variant 10/18
CCDC40NM_001330508.2 linkuse as main transcriptc.1479G>A p.Arg493= synonymous_variant 10/11

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
CCDC40ENST00000397545.9 linkuse as main transcriptc.1479G>A p.Arg493= synonymous_variant 10/205 NM_017950.4 P2Q4G0X9-1
ENST00000695611.1 linkuse as main transcriptn.313+5709C>T intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes
Cov.:
29
GnomAD3 exomes
AF:
0.00000402
AC:
1
AN:
248806
Hom.:
0
AF XY:
0.00000739
AC XY:
1
AN XY:
135262
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:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1460974
Hom.:
0
Cov.:
32
AF XY:
0.00000138
AC XY:
1
AN XY:
726828
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
8.99e-7
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
29

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.55
CADD
Benign
5.6
DANN
Benign
0.80

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.

Other links and lift over

dbSNP: rs201739201; hg19: chr17-78039322; API