rs200902099

Positions:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_017950.4(CCDC40):c.1468G>A(p.Val490Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000126 in 1,612,990 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.000092 ( 0 hom., cov: 29)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

CCDC40
NM_017950.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: -5.54

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:

(HGNC:):

links:

Genome browser will be placed here

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 (MetaRNN=0.008791387).

BP6

Variant 17-80065512-G-A is Benign according to our data. Variant chr17-80065512-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 325731.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
CCDC40	NM_017950.4 linkuse as main transcript	c.1468G>A	p.Val490Met	missense_variant	10/20	ENST00000397545.9	NP_060420.2
LOC124904074	XR_007065931.1 linkuse as main transcript	n.305+5720C>T		intron_variant, non_coding_transcript_variant
CCDC40	NM_001243342.2 linkuse as main transcript	c.1468G>A	p.Val490Met	missense_variant	10/18		NP_001230271.1
CCDC40	NM_001330508.2 linkuse as main transcript	c.1468G>A	p.Val490Met	missense_variant	10/11		NP_001317437.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCDC40	ENST00000397545.9 linkuse as main transcript	c.1468G>A	p.Val490Met	missense_variant	10/20	5	NM_017950.4	ENSP00000380679	P2	Q4G0X9-1
	ENST00000695611.1 linkuse as main transcript	n.313+5720C>T		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

AF:

0.0000921

AC:

AN:

152046

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000193

AC:

AN:

248768

Hom.:

AF XY:

0.000133

AC XY:

AN XY:

135254

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000203

Gnomad ASJ exome

AF:

0.00319

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000621

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.000129

AC:

189

AN:

1460944

Hom.:

Cov.:

AF XY:

0.000133

AC XY:

AN XY:

726808

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000246

Gnomad4 ASJ exome

AF:

0.00352

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000639

Gnomad4 OTH exome

AF:

0.000248

GnomAD4 genome

AF:

0.0000921

AC:

AN:

152046

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

74262

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.000197

Gnomad4 ASJ

AF:

0.00115

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.000479

Alfa

AF:

0.000181

Hom.:

Bravo

AF:

0.000113

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000118

AC:

ExAC

AF:

0.000124

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.000237

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 05, 2023	- -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Oct 26, 2022	This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Primary ciliary dyskinesia 15

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.53

CADD

Benign

0.0010

DANN

Benign

0.77

DEOGEN2

Benign

0.059

.;T;.

Eigen

Benign

-2.3

Eigen_PC

Benign

-2.4

FATHMM_MKL

Benign

0.011

LIST_S2

Benign

0.46

T;T;T

M_CAP

Benign

0.0088

MetaRNN

Benign

0.0088

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.27

N;N;N

MutationTaster

Benign

1.0

D;N;N;N

PrimateAI

Benign

0.29

PROVEAN

Benign

0.42

N;N;N

REVEL

Benign

0.060

Sift

Benign

1.0

T;T;T

Sift4G

Benign

0.81

T;T;T

Polyphen

0.089

.;B;.

Vest4

0.29

MVP

0.048

MPC

0.18

ClinPred

0.029

GERP RS

-9.7

Varity_R

0.017

gMVP

0.044

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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