Genetic Variant CC2D2B:p.Val1216Ile (chr10-96019218-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001349008.3(CC2D2B):c.3646G>A(p.Val1216Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00000311 in 1,606,186 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000028 ( 0 hom. )

Consequence

CC2D2B
NM_001349008.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.46

Variant links:

Genes affected

CC2D2B (HGNC:31666): (coiled-coil and C2 domain containing 2B) Predicted to be involved in non-motile cilium assembly and protein localization to ciliary transition zone. Predicted to be active in ciliary transition zone. [provided by Alliance of Genome Resources, Apr 2022]

CC2D2B links:

ENTPD1-AS1 (HGNC:45203): (ENTPD1 antisense RNA 1)

ENTPD1-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CC2D2B	NM_001349008.3 link	c.3646G>A	p.Val1216Ile	missense_variant	Exon 31 of 35	ENST00000646931.3	NP_001335937.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CC2D2B	ENST00000646931.3 link	c.3646G>A	p.Val1216Ile	missense_variant	Exon 31 of 35		NM_001349008.3	ENSP00000496666.2		Q6DHV5-5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152176

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:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000413

AC:

AN:

242382

Hom.:

AF XY:

0.00000761

AC XY:

AN XY:

131464

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:

0.0000348

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000275

AC:

AN:

1454010

Hom.:

Cov.:

AF XY:

0.00000415

AC XY:

AN XY:

723214

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000473

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74320

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:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000828

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 26, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.538G>A (p.V180I) alteration is located in exon 8 (coding exon 6) of the CC2D2B gene. This alteration results from a G to A substitution at nucleotide position 538, causing the valine (V) at amino acid position 180 to be replaced by an isoleucine (I). 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

0.12

BayesDel_addAF

Benign

-0.022

BayesDel_noAF

Benign

-0.16

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

0.88

Eigen_PC

Pathogenic

0.87

FATHMM_MKL

Uncertain

0.91

LIST_S2

Benign

0.81

.;T;T;T

M_CAP

Benign

0.024

MetaRNN

Uncertain

0.60

D;D;D;D

MetaSVM

Uncertain

0.23

MutationAssessor

Uncertain

2.9

.;.;M;M

PrimateAI

Benign

0.46

PROVEAN

Benign

-0.95

.;.;N;N

REVEL

Uncertain

0.43

Sift

Uncertain

0.0050

.;.;D;D

Sift4G

Uncertain

0.015

.;.;D;D

Vest4

0.55, 0.47

MutPred

0.57

.;.;Loss of sheet (P = 0.1398);Loss of sheet (P = 0.1398);

MVP

0.74

MPC

0.49

ClinPred

0.83

GERP RS

6.1

Varity_R

0.067

gMVP

0.59

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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