Genetic Variant CCDC42:p.Arg299Gln (chr17-8730185-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_144681.3(CCDC42):c.896G>A(p.Arg299Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000545 in 1,613,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000055 ( 0 hom. )

Consequence

CCDC42
NM_144681.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.19

Variant links:

Genes affected

CCDC42 (HGNC:26528): (coiled-coil domain containing 42) Predicted to be involved in spermatid development. [provided by Alliance of Genome Resources, Apr 2022]

CCDC42 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=0.05056414).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC42	NM_144681.3 link	c.896G>A	p.Arg299Gln	missense_variant	Exon 7 of 7	ENST00000293845.8	NP_653282.2
CCDC42	NM_001158261.2 link	c.674G>A	p.Arg225Gln	missense_variant	Exon 6 of 6		NP_001151733.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC42	ENST00000293845.8 link	c.896G>A	p.Arg299Gln	missense_variant	Exon 7 of 7	2	NM_144681.3	ENSP00000293845.3		Q96M95-1
CCDC42	ENST00000539522.2 link	c.674G>A	p.Arg225Gln	missense_variant	Exon 6 of 6	1		ENSP00000444359.2		Q96M95-2

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000597

AC:

AN:

251206

Hom.:

AF XY:

0.0000295

AC XY:

AN XY:

135792

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000868

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000272

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000547

AC:

AN:

1461632

Hom.:

Cov.:

AF XY:

0.0000481

AC XY:

AN XY:

727128

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000151

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000576

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152258

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74426

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.0000378

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000988

AC:

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

Feb 27, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.896G>A (p.R299Q) alteration is located in exon 7 (coding exon 7) of the CCDC42 gene. This alteration results from a G to A substitution at nucleotide position 896, causing the arginine (R) at amino acid position 299 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

0.11

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.58

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0034

T;.

Eigen

Benign

-0.43

Eigen_PC

Benign

-0.22

FATHMM_MKL

Benign

0.66

LIST_S2

Benign

0.78

T;T

M_CAP

Benign

0.0071

MetaRNN

Benign

0.051

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

N;.

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-0.14

N;N

REVEL

Benign

0.065

Sift

Uncertain

0.0020

D;T

Sift4G

Uncertain

0.014

D;D

Polyphen

0.0080

B;.

Vest4

0.17

MVP

0.20

MPC

0.36

ClinPred

0.097

GERP RS

4.2

Varity_R

0.12

gMVP

0.98

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