19-13918779-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_017721.5(CC2D1A):c.980C>T(p.Ser327Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00864 in 1,613,338 control chromosomes in the GnomAD database, including 105 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0069 ( 4 hom., cov: 32)

Exomes 𝑓: 0.0088 ( 101 hom. )

Consequence

CC2D1A
NM_017721.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -0.177

Publications

8 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: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.004861355).

BP6

Variant 19-13918779-C-T is Benign according to our data. Variant chr19-13918779-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 128624.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.0069 (1051/152260) while in subpopulation SAS AF = 0.0139 (67/4826). AF 95% confidence interval is 0.0112. There are 4 homozygotes in GnomAd4. There are 530 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CC2D1A	NM_017721.5 link	c.980C>T	p.Ser327Leu	missense_variant	Exon 9 of 29	ENST00000318003.11	NP_060191.3	Q6P1N0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CC2D1A	ENST00000318003.11 link	c.980C>T	p.Ser327Leu	missense_variant	Exon 9 of 29	1	NM_017721.5	ENSP00000313601.6		Q6P1N0-1

Frequencies

GnomAD3 genomes

AF:

0.00691

AC:

1051

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00157

Gnomad AMI

AF:

0.0175

Gnomad AMR

AF:

0.0104

Gnomad ASJ

AF:

0.0196

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.0135

Gnomad FIN

AF:

0.00188

Gnomad MID

AF:

0.0253

Gnomad NFE

AF:

0.00929

Gnomad OTH

AF:

0.00860

GnomAD2 exomes

AF:

0.00920

AC:

2275

AN:

247258

AF XY:

0.0101

show subpopulations

Gnomad AFR exome

AF:

0.00112

Gnomad AMR exome

AF:

0.00732

Gnomad ASJ exome

AF:

0.0222

Gnomad EAS exome

AF:

0.000334

Gnomad FIN exome

AF:

0.00228

Gnomad NFE exome

AF:

0.0104

Gnomad OTH exome

AF:

0.0103

GnomAD4 exome

AF:

0.00883

AC:

12895

AN:

1461078

Hom.:

101

Cov.:

AF XY:

0.00926

AC XY:

6732

AN XY:

726804

show subpopulations

African (AFR)

AF:

0.00114

AC:

AN:

33474

American (AMR)

AF:

0.00739

AC:

330

AN:

44640

Ashkenazi Jewish (ASJ)

AF:

0.0222

AC:

579

AN:

26100

East Asian (EAS)

AF:

0.000126

AC:

AN:

39700

South Asian (SAS)

AF:

0.0173

AC:

1494

AN:

86132

European-Finnish (FIN)

AF:

0.00222

AC:

118

AN:

53236

Middle Eastern (MID)

AF:

0.0180

AC:

103

AN:

5730

European-Non Finnish (NFE)

AF:

0.00871

AC:

9679

AN:

1111700

Other (OTH)

AF:

0.00909

AC:

549

AN:

60366

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

705

1410

2114

2819

3524

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

352

704

1056

1408

1760

<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:

0.00690

AC:

1051

AN:

152260

Hom.:

Cov.:

AF XY:

0.00712

AC XY:

530

AN XY:

74444

show subpopulations

African (AFR)

AF:

0.00156

AC:

AN:

41546

American (AMR)

AF:

0.0104

AC:

159

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.0196

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.0139

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00188

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.0204

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00929

AC:

632

AN:

68000

Other (OTH)

AF:

0.00851

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

108

162

216

270

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.00897

Hom.:

Bravo

AF:

0.00670

TwinsUK

AF:

0.00674

AC:

ALSPAC

AF:

0.0106

AC:

ESP6500AA

AF:

0.000498

AC:

ESP6500EA

AF:

0.00793

AC:

ExAC

AF:

0.00928

AC:

1122

Asia WGS

AF:

0.00751

AC:

AN:

3476

EpiCase

AF:

0.0104

EpiControl

AF:

0.0132

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Nov 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

- -

Mar 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

CC2D1A: BP4, BS1, BS2 -

not specified

Benign:1

Nov 17, 2015

Genetic Services Laboratory, University of Chicago

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

CC2D1A-related disorder

Benign:1

May 21, 2019

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Inborn genetic diseases

Benign:1

May 24, 2016

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as 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. -

Intellectual disability, autosomal recessive 3

Benign:1

Jul 08, 2021

Fulgent Genetics, Fulgent Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.65

BayesDel_noAF

Benign

-0.70

CADD

Benign

7.0

(source)

DANN

Benign

0.86

DEOGEN2

Benign

0.040

T;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.035

LIST_S2

Benign

0.28

T;T

MetaRNN

Benign

0.0049

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-1.4

N;N

PhyloP100

-0.18

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.62

N;.

REVEL

Benign

0.052

Sift

Benign

0.33

T;.

Sift4G

Benign

0.63

T;T

Polyphen

0.0

B;B

Vest4

0.072

MVP

0.20

MPC

0.19

ClinPred

0.0041

GERP RS

1.5

Varity_R

0.025

gMVP

0.12

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

Details are displayed if max score is > 0.2

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

Publications

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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