Genetic Variant CCDC13:p.Arg409Gln (chr3-42735852-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_144719.4(CCDC13):c.1226G>A(p.Arg409Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000471 in 1,614,248 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

CCDC13
NM_144719.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.16

Variant links:

Genes affected

CCDC13 (HGNC:26358): (coiled-coil domain containing 13) Involved in cellular response to DNA damage stimulus; cytoplasmic microtubule organization; and non-motile cilium assembly. Located in centriolar satellite; cytosol; and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

CCDC13 links:

ENSG00000280571 (HGNC:):

ENSG00000280571 links:

CCDC13-AS1 (HGNC:41142): (CCDC13 antisense RNA 1)

CCDC13-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.045037508).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC13	NM_144719.4 link	c.1226G>A	p.Arg409Gln	missense_variant	Exon 10 of 16	ENST00000310232.11	NP_653320.3	Q8IYE1Q96LI1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC13	ENST00000310232.11 link	c.1226G>A	p.Arg409Gln	missense_variant	Exon 10 of 16	1	NM_144719.4	ENSP00000309836.6		Q8IYE1
ENSG00000280571	ENST00000648550.1 link	c.1295G>A	p.Arg432Gln	missense_variant	Exon 11 of 17			ENSP00000496982.1		A0A3B3IRZ5

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152248

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:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000557

AC:

AN:

251376

Hom.:

AF XY:

0.0000662

AC XY:

AN XY:

135858

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:

0.000294

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.0000486

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.0000715

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000441

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000261

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152366

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74504

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000576

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 11, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1226G>A (p.R409Q) alteration is located in exon 10 (coding exon 9) of the CCDC13 gene. This alteration results from a G to A substitution at nucleotide position 1226, causing the arginine (R) at amino acid position 409 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.54

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.00049

.;T

Eigen

Benign

-0.75

Eigen_PC

Benign

-0.72

FATHMM_MKL

Benign

0.026

LIST_S2

Benign

0.80

T;T

M_CAP

Benign

0.010

MetaRNN

Benign

0.045

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.8

.;L

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.67

.;N

REVEL

Benign

0.037

Sift

Benign

0.19

.;T

Sift4G

Benign

0.24

.;T

Polyphen

0.025

.;B

Vest4

0.21

MutPred

0.19

.;Loss of phosphorylation at S411 (P = 0.0904);

MVP

0.39

MPC

0.22

ClinPred

0.060

GERP RS

3.4

Varity_R

0.052

gMVP

0.056

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