2-130341033-C-T

Position:

chr2-130341033-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_032357.4(CCDC115):c.305G>A(p.Arg102Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000399 in 1,605,274 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

CCDC115
NM_032357.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.50

Variant links:

Genes affected

CCDC115 (HGNC:28178): (coiled-coil domain containing 115) The protein encoded by this gene has been observed to localize to the endoplasmic reticulum (ER)-Golgi intermediate compartment (ERGIC) and coat protein complex I (COPI) vesicles in some human cells. The encoded protein shares some homology with the yeast V-ATPase assembly factor Vma22p, and the orthologous protein in mouse promotes cell proliferation and suppresses cell death. Defects in this gene are a cause of congenital disorder of glycosylation, type IIo in humans. [provided by RefSeq, Mar 2016]

CCDC115 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1814296).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CCDC115	NM_032357.4 linkuse as main transcript	c.305G>A	p.Arg102Gln	missense_variant	4/5	ENST00000259229.7	NP_115733.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCDC115	ENST00000259229.7 linkuse as main transcript	c.305G>A	p.Arg102Gln	missense_variant	4/5	1	NM_032357.4	ENSP00000259229	P1	Q96NT0-1

Frequencies

GnomAD3 genomes

AF:

0.000145

AC:

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000410

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000508

AC:

AN:

236446

Hom.:

AF XY:

0.0000547

AC XY:

AN XY:

127966

show subpopulations

Gnomad AFR exome

AF:

0.000469

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000376

Gnomad OTH exome

AF:

0.000174

GnomAD4 exome

AF:

0.0000289

AC:

AN:

1452958

Hom.:

Cov.:

AF XY:

0.0000291

AC XY:

AN XY:

722362

show subpopulations

Gnomad4 AFR exome

AF:

0.000271

Gnomad4 AMR exome

AF:

0.0000232

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.0000235

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000190

Gnomad4 OTH exome

AF:

0.0000334

GnomAD4 genome

AF:

0.000144

AC:

AN:

152316

Hom.:

Cov.:

AF XY:

0.000201

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.000409

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000285

Hom.:

Bravo

AF:

0.000162

ExAC

AF:

0.0000577

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

CCDC115-CDG

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Victorian Clinical Genetics Services, Murdoch Childrens Research Institute

Mar 31, 2022

Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as VUS-3B. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with congenital disorder of glycosylation, type IIo (MIM#616828). (I) 0106 - This gene is associated with autosomal recessive disease. (I) 0200 - Variant is predicted to result in a missense amino acid change from arginine to glutamine. (I) 0252 - This variant is homozygous. (I) 0304 - Variant is present in gnomAD (v3) <0.01 for a recessive condition (22 heterozygotes, 0 homozygotes). (SP) 0309 - Two alternative amino acid changes at the same position have been observed in gnomAD (v2) (highest allele count: 9 heterozygotes, 0 homozygotes). (I) 0501 - Missense variant consistently predicted to be damaging by multiple in silico tools or highly conserved with a major amino acid change. (SP) 0604 - Variant is not located in an established domain, motif, hotspot or informative constraint region. (I) 0705 - No comparable missense variants have previous evidence for pathogenicity. (I) 0807 - This variant has no previous evidence of pathogenicity. (I) 0905 - No published segregation evidence has been identified for this variant. (I) 1007 - No published functional evidence has been identified for this variant. (I) 1209 - This variant has been shown to be both maternally and paternally inherited (biallelic) (by trio analysis). (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 27, 2022

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. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. This variant has not been reported in the literature in individuals affected with CCDC115-related conditions. This variant is present in population databases (rs537888072, gnomAD 0.03%). This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 102 of the CCDC115 protein (p.Arg102Gln). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Uncertain

-0.050

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

T;T

Eigen

Benign

-0.053

Eigen_PC

Benign

-0.25

FATHMM_MKL

Benign

0.53

LIST_S2

Benign

0.78

T;T

M_CAP

Uncertain

0.25

MetaRNN

Benign

0.18

T;T

MetaSVM

Uncertain

0.38

MutationAssessor

Uncertain

2.8

M;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Uncertain

0.60

PROVEAN

Uncertain

-3.1

D;D

REVEL

Uncertain

0.33

Sift

Uncertain

0.0070

D;D

Sift4G

Benign

0.081

T;T

Polyphen

1.0

D;D

Vest4

0.40

MutPred

0.24

Gain of ubiquitination at K105 (P = 0.0185);.;

MVP

0.96

MPC

0.92

ClinPred

0.73

GERP RS

2.8

Varity_R

0.23

gMVP

0.70

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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