4-15502836-T-G

Variant names:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_001378615.1(CC2D2A):c.351T>G(p.Ser117Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00179 in 1,610,380 control chromosomes in the GnomAD database, including 6 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0019 ( 6 hom. )

Consequence

CC2D2A
NM_001378615.1 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:5

Conservation

PhyloP100: -0.0850

Variant links:

Genes affected

CC2D2A (HGNC:29253): (coiled-coil and C2 domain containing 2A) This gene encodes a coiled-coil and calcium binding domain protein that appears to play a critical role in cilia formation. Mutations in this gene cause Meckel syndrome type 6, as well as Joubert syndrome type 9. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

CC2D2A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005662054).

BP6

Variant 4-15502836-T-G is Benign according to our data. Variant chr4-15502836-T-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 198451.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Benign=1, Uncertain_significance=2}. Variant chr4-15502836-T-G is described in Lovd as [Likely_benign].

BS2

High Homozygotes in GnomAdExome4 at 6 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CC2D2A	NM_001378615.1 link	c.351T>G	p.Ser117Arg	missense_variant	Exon 6 of 37	ENST00000424120.6	NP_001365544.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CC2D2A	ENST00000424120.6 link	c.351T>G	p.Ser117Arg	missense_variant	Exon 6 of 37	5	NM_001378615.1	ENSP00000403465.1		Q9P2K1-4

Frequencies

GnomAD3 genomes

AF:

0.00122

AC:

186

AN:

152240

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000338

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000982

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00104

Gnomad FIN

AF:

0.000471

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00207

Gnomad OTH

AF:

0.00287

GnomAD3 exomes

AF:

0.00127

AC:

310

AN:

243586

Hom.:

AF XY:

0.00121

AC XY:

160

AN XY:

131968

show subpopulations

Gnomad AFR exome

AF:

0.000202

Gnomad AMR exome

AF:

0.00148

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00140

Gnomad FIN exome

AF:

0.000515

Gnomad NFE exome

AF:

0.00177

Gnomad OTH exome

AF:

0.00151

GnomAD4 exome

AF:

0.00185

AC:

2698

AN:

1458022

Hom.:

Cov.:

AF XY:

0.00182

AC XY:

1317

AN XY:

724842

show subpopulations

Gnomad4 AFR exome

AF:

0.000299

Gnomad4 AMR exome

AF:

0.00174

Gnomad4 ASJ exome

AF:

0.0000385

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00127

Gnomad4 FIN exome

AF:

0.000582

Gnomad4 NFE exome

AF:

0.00214

Gnomad4 OTH exome

AF:

0.00158

GnomAD4 genome

AF:

0.00122

AC:

186

AN:

152358

Hom.:

Cov.:

AF XY:

0.000940

AC XY:

AN XY:

74502

show subpopulations

Gnomad4 AFR

AF:

0.000337

Gnomad4 AMR

AF:

0.000981

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00104

Gnomad4 FIN

AF:

0.000471

Gnomad4 NFE

AF:

0.00207

Gnomad4 OTH

AF:

0.00284

Alfa

AF:

0.00134

Hom.:

Bravo

AF:

0.00145

TwinsUK

AF:

0.00162

AC:

ALSPAC

AF:

0.00285

AC:

ESP6500AA

AF:

0.000536

AC:

ESP6500EA

AF:

0.00194

AC:

ExAC

AF:

0.00125

AC:

151

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:3

Jul 14, 2020

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 22241855, 21370303) -

Sep 15, 2016

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Apr 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

CC2D2A: BS2 -

Meckel syndrome, type 6

Uncertain:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Joubert syndrome 9

Uncertain:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

not specified

Benign:1

May 22, 2015

Eurofins Ntd Llc (ga)

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Meckel-Gruber syndrome;C0431399:Familial aplasia of the vermis

Benign:1

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.44

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.41

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.17

T;T;T

Eigen

Benign

-0.0055

Eigen_PC

Benign

-0.052

FATHMM_MKL

Uncertain

0.81

LIST_S2

Uncertain

0.87

D;D;.

M_CAP

Benign

0.0083

MetaRNN

Benign

0.0057

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.6

M;.;M

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-2.1

N;D;N

REVEL

Benign

0.10

Sift

Uncertain

0.013

D;D;D

Sift4G

Uncertain

0.021

D;T;D

Polyphen

0.92

P;.;P

Vest4

0.24

MutPred

0.17

Gain of glycosylation at S113 (P = 0.0037);Gain of glycosylation at S113 (P = 0.0037);Gain of glycosylation at S113 (P = 0.0037);

MVP

0.39

MPC

0.22

ClinPred

0.062

GERP RS

-0.92

Varity_R

0.15

gMVP

0.49

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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