NM_017950.4:c.2387C>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -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. 16/22 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:2B:3

Conservation

PhyloP100: -0.806

Publications

1 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: Labcorp Genetics (formerly Invitae), ClinGen, G2P, Ambry Genetics, 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -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 VariationId is 325742.

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 the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 9 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017950.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CCDC40	NM_017950.4	MANE Select	c.2387C>G	p.Ala796Gly	missense	Exon 14 of 20	NP_060420.2
	CCDC40	NM_001243342.2		c.2387C>G	p.Ala796Gly	missense	Exon 14 of 18	NP_001230271.1	Q4G0X9-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CCDC40	ENST00000397545.9	TSL:5 MANE Select	c.2387C>G	p.Ala796Gly	missense	Exon 14 of 20	ENSP00000380679.4	Q4G0X9-1
CCDC40	ENST00000574799.5	TSL:1	n.1924C>G		non_coding_transcript_exon	Exon 10 of 16
CCDC40	ENST00000897784.1		c.2387C>G	p.Ala796Gly	missense	Exon 14 of 21	ENSP00000567843.1

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

GnomAD2 exomes

AF:

0.000679

AC:

169

AN:

248714

AF XY:

0.000636

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 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

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.0000224

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00486

AC:

193

AN:

39698

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53384

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5742

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111942

Other (OTH)

AF:

0.000364

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.466

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome 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

GnomAD4 genome

AF:

0.000309

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.000350

AC XY:

AN XY:

74390

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41534

American (AMR)

AF:

0.0000654

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00836

AC:

AN:

5142

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68014

Other (OTH)

AF:

0.000950

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.511

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:

0.0000854

Hom.:

Bravo

AF:

0.000249

ExAC

AF:

0.000446

AC:

Asia WGS

AF:

0.00549

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Primary ciliary dyskinesia (2)

CCDC40-related disorder (1)

not provided (1)

Primary ciliary dyskinesia 15 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.68

BayesDel_noAF

Benign

-0.75

CADD

Benign

0.056

(source)

DANN

Benign

0.47

DEOGEN2

Benign

0.12

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.1

FATHMM_MKL

Benign

0.022

LIST_S2

Benign

0.57

M_CAP

Benign

0.0032

MetaRNN

Benign

0.0048

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

PhyloP100

-0.81

PrimateAI

Benign

0.25

PROVEAN

Benign

-1.7

REVEL

Benign

0.032

Sift

Benign

0.35

Sift4G

Benign

0.16

Polyphen

0.0030

Vest4

0.17

MVP

0.030

MPC

0.18

ClinPred

0.027

GERP RS

-9.9

Varity_R

0.031

gMVP

0.043

Mutation Taster

=99/1

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over