NM_017950.4:c.1144G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_017950.4(CCDC40):c.1144G>A(p.Glu382Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000848 in 1,566,090 control chromosomes in the GnomAD database, including 18 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 Benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E382D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00070 ( 3 hom., cov: 32)

Exomes 𝑓: 0.00086 ( 15 hom. )

Consequence

CCDC40
NM_017950.4 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 0.840

Publications

5 publications found

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 Gene-Disease associations (from GenCC):

primary ciliary dyskinesia 15
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia, Laboratory for Molecular Medicine
primary ciliary dyskinesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
autoimmune disease
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

CCDC40 links:

ENSG00000289689 (HGNC:):

ENSG00000289689 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005613655).

BP6

Variant 17-80050268-G-A is Benign according to our data. Variant chr17-80050268-G-A is described in ClinVar as Benign. ClinVar VariationId is 226487.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000703 (107/152280) while in subpopulation EAS AF = 0.0178 (92/5172). AF 95% confidence interval is 0.0149. There are 3 homozygotes in GnomAd4. There are 70 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 3 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC40	NM_017950.4 link	c.1144G>A	p.Glu382Lys	missense_variant	Exon 7 of 20	ENST00000397545.9	NP_060420.2	Q4G0X9-1
CCDC40	NM_001243342.2 link	c.1144G>A	p.Glu382Lys	missense_variant	Exon 7 of 18		NP_001230271.1	Q4G0X9-2
CCDC40	NM_001330508.2 link	c.1144G>A	p.Glu382Lys	missense_variant	Exon 7 of 11		NP_001317437.1	Q4G0X9-4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC40	ENST00000397545.9 link	c.1144G>A	p.Glu382Lys	missense_variant	Exon 7 of 20	5	NM_017950.4	ENSP00000380679.4		Q4G0X9-1

Frequencies

GnomAD3 genomes

AF:

0.000690

AC:

105

AN:

152162

Hom.:

Cov.:

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:

0.0177

Gnomad SAS

AF:

0.00207

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.00178

AC:

302

AN:

169920

AF XY:

0.00178

show subpopulations

Gnomad AFR exome

AF:

0.000111

Gnomad AMR exome

AF:

0.0000386

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0224

Gnomad FIN exome

AF:

0.0000612

Gnomad NFE exome

AF:

0.0000579

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000864

AC:

1221

AN:

1413810

Hom.:

Cov.:

AF XY:

0.000878

AC XY:

614

AN XY:

699470

show subpopulations

African (AFR)

AF:

0.0000312

AC:

AN:

32086

American (AMR)

AF:

0.00

AC:

AN:

37314

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25358

East Asian (EAS)

AF:

0.0296

AC:

1089

AN:

36744

South Asian (SAS)

AF:

0.000876

AC:

AN:

81090

European-Finnish (FIN)

AF:

0.000201

AC:

AN:

49800

Middle Eastern (MID)

AF:

0.000735

AC:

AN:

4082

European-Non Finnish (NFE)

AF:

0.0000193

AC:

AN:

1088802

Other (OTH)

AF:

0.000444

AC:

AN:

58534

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

158

236

315

394

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.000703

AC:

107

AN:

152280

Hom.:

Cov.:

AF XY:

0.000940

AC XY:

AN XY:

74456

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41562

American (AMR)

AF:

0.00

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.0178

AC:

AN:

5172

South Asian (SAS)

AF:

0.00249

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.0000942

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68014

Other (OTH)

AF:

0.000473

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.518

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<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:

0.000947

Hom.:

Bravo

AF:

0.000699

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.00125

AC:

146

Asia WGS

AF:

0.00837

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Benign:2

Apr 15, 2019

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as 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. -

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

Feb 21, 2013

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Glu382Lys in exon 7 of CCDC40: This variant is not expected to have clinical sig nificance because it has been identified in 5.2% (10/194) of Han Chinese chromos omes from a broad population by the 1000 Genomes Project (http://www.ncbi.nlm.ni h.gov/projects/SNP; dbSNP rs2289532). -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Primary ciliary dyskinesia 15

Benign:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases was too high to be consistent with this variant causing disease. Therefore, this variant is classified as benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.58

CADD

Benign

(source)

DANN

Benign

0.92

DEOGEN2

Benign

0.13

.;T;.;.

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.83

FATHMM_MKL

Benign

0.14

LIST_S2

Benign

0.80

T;T;T;T

MetaRNN

Benign

0.0056

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.9

L;L;L;L

PhyloP100

0.84

PrimateAI

Benign

0.38

PROVEAN

Benign

-2.1

N;N;N;N

REVEL

Benign

0.030

Sift

Benign

0.27

T;T;T;T

Sift4G

Benign

0.60

T;T;T;T

Polyphen

0.35, 0.98

.;B;.;D

Vest4

0.23

MVP

0.14

MPC

0.21

ClinPred

0.020

GERP RS

1.5

Varity_R

0.079

gMVP

0.058

Mutation Taster

=94/6

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over