rs139435501

Positions:

chr17-80086154-C-G

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_017950.4(CCDC40):c.2387C>G(p.Ala796Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000164 in 1,613,888 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00031 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 9 hom. )

Consequence

CCDC40
NM_017950.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: -0.806

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]

CCDC40 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0047572553).

BP6

Variant 17-80086154-C-G is Benign according to our data. Variant chr17-80086154-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 325742.We mark this variant Likely_benign, oryginal submissions are: {Benign=2, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000309 (47/152182) while in subpopulation EAS AF= 0.00836 (43/5142). AF 95% confidence interval is 0.00638. There are 1 homozygotes in gnomad4. There are 26 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 9 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CCDC40	NM_017950.4 linkuse as main transcript	c.2387C>G	p.Ala796Gly	missense_variant	14/20	ENST00000397545.9
CCDC40	NM_001243342.2 linkuse as main transcript	c.2387C>G	p.Ala796Gly	missense_variant	14/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CCDC40	ENST00000397545.9 linkuse as main transcript	c.2387C>G	p.Ala796Gly	missense_variant	14/20	5	NM_017950.4	P2	Q4G0X9-1
CCDC40	ENST00000574799.5 linkuse as main transcript	n.1924C>G		non_coding_transcript_exon_variant	10/16	1
CCDC40	ENST00000374877.7 linkuse as main transcript	c.2387C>G	p.Ala796Gly	missense_variant	14/18	5		A2	Q4G0X9-2
CCDC40	ENST00000572253.5 linkuse as main transcript	n.1014C>G		non_coding_transcript_exon_variant	3/6	2

Frequencies

GnomAD3 genomes

AF:

0.000316

AC:

AN:

152064

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00854

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000960

GnomAD3 exomes

AF:

0.000679

AC:

169

AN:

248714

Hom.:

AF XY:

0.000636

AC XY:

AN XY:

135118

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00931

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.000149

AC:

218

AN:

1461706

Hom.:

Cov.:

AF XY:

0.000140

AC XY:

102

AN XY:

727150

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00486

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000364

GnomAD4 genome

AF:

0.000309

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.000350

AC XY:

AN XY:

74390

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00836

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000950

Alfa

AF:

0.0000854

Hom.:

Bravo

AF:

0.000249

ExAC

AF:

0.000446

AC:

Asia WGS

AF:

0.00549

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia 15

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Primary ciliary dyskinesia

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Oct 11, 2023

- -

CCDC40-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Feb 05, 2020

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.68

BayesDel_noAF

Benign

-0.75

CADD

Benign

0.056

DANN

Benign

0.47

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.1

FATHMM_MKL

Benign

0.022

LIST_S2

Benign

0.57

T;T

M_CAP

Benign

0.0032

MetaRNN

Benign

0.0048

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

L;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.25

PROVEAN

Benign

-1.7

N;N

REVEL

Benign

0.032

Sift

Benign

0.35

T;T

Sift4G

Benign

0.16

T;T

Polyphen

0.0030

.;B

Vest4

0.17

MVP

0.030

MPC

0.18

ClinPred

0.027

GERP RS

-9.9

Varity_R

0.031

gMVP

0.043

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