NM_001080414.4:c.3372G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_001080414.4(CCDC88C):c.3372G>A(p.Thr1124Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00429 in 1,602,506 control chromosomes in the GnomAD database, including 192 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.020 ( 104 hom., cov: 33)

Exomes 𝑓: 0.0026 ( 88 hom. )

Consequence

CCDC88C
NM_001080414.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -4.84

Publications

1 publications found

Variant links:

Genes affected

CCDC88C (HGNC:19967): (coiled-coil domain containing 88C) This gene encodes a ubiquitously expressed coiled-coil domain-containing protein that interacts with the dishevelled protein and is a negative regulator of the Wnt signalling pathway. The protein encoded by this gene has a PDZ-domain binding motif in its C-terminus with which it interacts with the dishevelled protein. Dishevelled is a scaffold protein involved in the regulation of the Wnt signaling pathway. The Wnt signaling pathway plays an important role in embryonic development, tissue maintenance, and cancer progression. Mutations in this gene cause autosomal recessive, primary non-syndromic congenital hydrocephalus; a condition characterized by excessive accumulation of cerebrospinal fluid in the ventricles of the brain. [provided by RefSeq, Jan 2013]

CCDC88C Gene-Disease associations (from GenCC):

hydrocephalus, nonsyndromic, autosomal recessive 1
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
spinocerebellar ataxia type 40
Inheritance: AD Classification: MODERATE, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet

CCDC88C links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.73).

BP6

Variant 14-91303964-C-T is Benign according to our data. Variant chr14-91303964-C-T is described in ClinVar as Benign. ClinVar VariationId is 158107.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-4.84 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.065 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC88C	NM_001080414.4 link	c.3372G>A	p.Thr1124Thr	synonymous_variant	Exon 20 of 30	ENST00000389857.11	NP_001073883.2	Q9P219-1B4DZB8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC88C	ENST00000389857.11 link	c.3372G>A	p.Thr1124Thr	synonymous_variant	Exon 20 of 30	5	NM_001080414.4	ENSP00000374507.6		Q9P219-1

Frequencies

GnomAD3 genomes

AF:

0.0200

AC:

3046

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0666

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0118

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00949

Gnomad NFE

AF:

0.000955

Gnomad OTH

AF:

0.0167

GnomAD2 exomes

AF:

0.00569

AC:

1376

AN:

241776

AF XY:

0.00434

show subpopulations

Gnomad AFR exome

AF:

0.0689

Gnomad AMR exome

AF:

0.00452

Gnomad ASJ exome

AF:

0.000300

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00111

Gnomad OTH exome

AF:

0.00468

GnomAD4 exome

AF:

0.00262

AC:

3801

AN:

1450168

Hom.:

Cov.:

AF XY:

0.00238

AC XY:

1712

AN XY:

720808

show subpopulations

African (AFR)

AF:

0.0696

AC:

2325

AN:

33384

American (AMR)

AF:

0.00531

AC:

237

AN:

44644

Ashkenazi Jewish (ASJ)

AF:

0.000115

AC:

AN:

26098

East Asian (EAS)

AF:

0.00

AC:

AN:

39550

South Asian (SAS)

AF:

0.000220

AC:

AN:

86210

European-Finnish (FIN)

AF:

0.00

AC:

AN:

46194

Middle Eastern (MID)

AF:

0.00851

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.000718

AC:

796

AN:

1108300

Other (OTH)

AF:

0.00620

AC:

372

AN:

60032

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

231

462

692

923

1154

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

184

276

368

460

<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:

0.0202

AC:

3072

AN:

152338

Hom.:

104

Cov.:

AF XY:

0.0196

AC XY:

1461

AN XY:

74490

show subpopulations

African (AFR)

AF:

0.0671

AC:

2788

AN:

41566

American (AMR)

AF:

0.0117

AC:

179

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.000207

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.0102

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000955

AC:

AN:

68038

Other (OTH)

AF:

0.0166

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

153

306

459

612

765

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

102

136

170

<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:

0.0147

Hom.:

Bravo

AF:

0.0230

Asia WGS

AF:

0.00375

AC:

AN:

3478

EpiCase

AF:

0.00191

EpiControl

AF:

0.00124

ClinVar

Significance: Benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Jan 24, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

May 04, 2021

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

Apr 08, 2013

Genetic Services Laboratory, University of Chicago

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.73

CADD

Benign

0.038

(source)

DANN

Benign

0.94

PhyloP100

-4.8

Mutation Taster

=95/5

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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