17-44902447-A-G

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_213607.3(CCDC103):c.359A>G(p.Tyr120Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000141 in 1,614,098 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

CCDC103
NM_213607.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 7.48

Variant links:

Genes affected

CCDC103 (HGNC:32700): (coiled-coil domain containing 103) Enables protein homodimerization activity. Involved in axonemal dynein complex assembly; cilium movement; and determination of left/right symmetry. Predicted to be located in axoneme. Predicted to be part of outer dynein arm. Implicated in primary ciliary dyskinesia 17. [provided by Alliance of Genome Resources, Apr 2022]

CCDC103 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.789

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC103	NM_213607.3 link	c.359A>G	p.Tyr120Cys	missense_variant	Exon 4 of 4	ENST00000417826.3	NP_998772.1	Q8IW40-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CCDC103	ENST00000417826.3 link	c.359A>G	p.Tyr120Cys	missense_variant	Exon 4 of 4	1	NM_213607.3	ENSP00000391692.2	Q8IW40-1
CCDC103	ENST00000410006.6 link	c.359A>G	p.Tyr120Cys	missense_variant	Exon 4 of 4	2		ENSP00000387252.1	Q8IW40-1
CCDC103	ENST00000357776.6 link	c.359A>G	p.Tyr120Cys	missense_variant	Exon 4 of 4	2		ENSP00000350420.2	F8W6J8
CCDC103	ENST00000410027.5 link	c.*109A>G		3_prime_UTR_variant	Exon 4 of 4	4		ENSP00000386640.1	Q8IW40-2

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000103

AC:

AN:

251472

Hom.:

AF XY:

0.000110

AC XY:

AN XY:

135916

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000193

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000146

AC:

214

AN:

1461890

Hom.:

Cov.:

AF XY:

0.000146

AC XY:

106

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.000181

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74358

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000249

Hom.:

Bravo

AF:

0.000125

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000123

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000415

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Uncertain:2

Mar 13, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Y120C variant (also known as c.359A>G), located in coding exon 3 of the CCDC103 gene, results from an A to G substitution at nucleotide position 359. The tyrosine at codon 120 is replaced by cysteine, an amino acid with highly dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Oct 17, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces tyrosine, which is neutral and polar, with cysteine, which is neutral and slightly polar, at codon 120 of the CCDC103 protein (p.Tyr120Cys). This variant is present in population databases (rs149858795, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with CCDC103-related conditions. ClinVar contains an entry for this variant (Variation ID: 242264). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Primary ciliary dyskinesia 17

Uncertain:1

Jun 23, 2016

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.49

BayesDel_addAF

Uncertain

0.14

BayesDel_noAF

Pathogenic

0.23

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

T;.;T;.

Eigen

Pathogenic

0.78

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.87

.;D;.;D

M_CAP

Benign

0.053

MetaRNN

Pathogenic

0.79

D;D;D;D

MetaSVM

Benign

-0.33

MutationAssessor

Uncertain

2.8

M;.;M;.

PrimateAI

Uncertain

0.64

PROVEAN

Pathogenic

-5.2

D;D;D;.

REVEL

Uncertain

0.60

Sift

Uncertain

0.0030

D;D;D;.

Sift4G

Uncertain

0.019

D;D;D;D

Polyphen

1.0

D;.;D;.

Vest4

0.92

MVP

0.68

MPC

0.84

ClinPred

0.89

GERP RS

6.2

Varity_R

0.71

gMVP

0.67

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