rs767908962

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_017721.5(CC2D1A):c.2728G>A(p.Glu910Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000416 in 1,611,758 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000040 ( 0 hom. )

Consequence

CC2D1A
NM_017721.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 2.61

Publications

4 publications found

Variant links:

Genes affected

CC2D1A (HGNC:30237): (coiled-coil and C2 domain containing 1A) This gene encodes a transcriptional repressor that binds to a conserved 14-bp 5'-repressor element and regulates expression of the 5-hydroxytryptamine (serotonin) receptor 1A gene in neuronal cells. The DNA binding and transcriptional repressor activities of the protein are inhibited by calcium. A mutation in this gene results in a nonsyndromic form of cognitive disability (MRT3). [provided by RefSeq, Jul 2017]

CC2D1A Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
intellectual disability, autosomal recessive 3
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
autosomal recessive non-syndromic intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CC2D1A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.047852486).

BP6

Variant 19-13930095-G-A is Benign according to our data. Variant chr19-13930095-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 210603.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CC2D1A	NM_017721.5 link	c.2728G>A	p.Glu910Lys	missense_variant	Exon 27 of 29	ENST00000318003.11	NP_060191.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CC2D1A	ENST00000318003.11 link	c.2728G>A	p.Glu910Lys	missense_variant	Exon 27 of 29	1	NM_017721.5	ENSP00000313601.6

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152082

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:

0.00154

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000127

AC:

AN:

244160

AF XY:

0.000105

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00173

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000404

AC:

AN:

1459558

Hom.:

Cov.:

AF XY:

0.0000454

AC XY:

AN XY:

726132

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33458

American (AMR)

AF:

0.00

AC:

AN:

44678

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26078

East Asian (EAS)

AF:

0.00136

AC:

AN:

39686

South Asian (SAS)

AF:

0.00

AC:

AN:

86190

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51974

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111536

Other (OTH)

AF:

0.0000664

AC:

AN:

60196

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74408

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41514

American (AMR)

AF:

0.00

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00155

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67986

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000358

Hom.:

Bravo

AF:

0.0000529

ExAC

AF:

0.000116

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:2

Sep 11, 2014

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Mar 18, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: CC2D1A c.2728G>A (p.Glu910Lys) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00013 in 244160 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in CC2D1A causing Intellectual Disability 3, allowing no conclusion about variant significance. c.2728G>A has been reported in the literature in individuals affected with intellectual disability or developmental delay (Xiong_2019, Bhattacharya_2024). These report(s) do not provide unequivocal conclusions about association of the variant with Intellectual Disability 3. At least one publication reports experimental evidence evaluating an impact on protein function. These results showed no damaging effect of this variant (Bhattacharya_2024). The following publications have been ascertained in the context of this evaluation (PMID: 38652285, 31031587). ClinVar contains an entry for this variant (Variation ID: 210603). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Inborn genetic diseases

Benign:1

Dec 10, 2021

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.44

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.30

CADD

Uncertain

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.042

T;.

Eigen

Uncertain

0.19

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.90

D;D

M_CAP

Benign

0.047

MetaRNN

Benign

0.048

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

L;.

PhyloP100

2.6

PrimateAI

Uncertain

0.75

PROVEAN

Benign

-1.1

N;.

REVEL

Benign

0.065

Sift

Uncertain

0.015

D;.

Sift4G

Uncertain

0.031

D;D

Polyphen

0.86

P;D

Vest4

0.54

MutPred

0.35

Gain of MoRF binding (P = 0.005);.;

MVP

0.31

MPC

0.86

ClinPred

0.18

GERP RS

5.0

Varity_R

0.22

gMVP

0.27

Mutation Taster

=92/8

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over