chr14-91313907-G-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_001080414.4(CCDC88C):c.1909C>G(p.Leu637Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00332 in 1,611,280 control chromosomes in the GnomAD database, including 171 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. L637L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.018 ( 96 hom., cov: 32)

Exomes 𝑓: 0.0018 ( 75 hom. )

Consequence

CCDC88C
NM_001080414.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 3.29

Publications

3 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 -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.001711458).

BP6

Variant 14-91313907-G-C is Benign according to our data. Variant chr14-91313907-G-C is described in ClinVar as Benign. ClinVar VariationId is 158093.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0611 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC88C	NM_001080414.4 link	c.1909C>G	p.Leu637Val	missense_variant	Exon 15 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.1909C>G	p.Leu637Val	missense_variant	Exon 15 of 30	5	NM_001080414.4	ENSP00000374507.6		Q9P219-1
CCDC88C	ENST00000557507.1 link	n.*36C>G		downstream_gene_variant		2

Frequencies

GnomAD3 genomes

AF:

0.0182

AC:

2761

AN:

151438

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0634

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00638

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000390

Gnomad SAS

AF:

0.000210

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000250

Gnomad OTH

AF:

0.0178

GnomAD2 exomes

AF:

0.00434

AC:

1075

AN:

247820

AF XY:

0.00335

show subpopulations

Gnomad AFR exome

AF:

0.0609

Gnomad AMR exome

AF:

0.00270

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000668

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000975

Gnomad OTH exome

AF:

0.00232

GnomAD4 exome

AF:

0.00177

AC:

2586

AN:

1459724

Hom.:

Cov.:

AF XY:

0.00153

AC XY:

1114

AN XY:

726198

show subpopulations

African (AFR)

AF:

0.0623

AC:

2085

AN:

33480

American (AMR)

AF:

0.00333

AC:

149

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.000227

AC:

AN:

39694

South Asian (SAS)

AF:

0.000151

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51604

Middle Eastern (MID)

AF:

0.00260

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000351

AC:

AN:

1111746

Other (OTH)

AF:

0.00457

AC:

276

AN:

60348

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

157

315

472

630

787

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

128

192

256

320

<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:

0.0182

AC:

2759

AN:

151556

Hom.:

Cov.:

AF XY:

0.0176

AC XY:

1305

AN XY:

74028

show subpopulations

African (AFR)

AF:

0.0631

AC:

2605

AN:

41256

American (AMR)

AF:

0.00637

AC:

AN:

15228

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.000391

AC:

AN:

5118

South Asian (SAS)

AF:

0.000210

AC:

AN:

4768

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10524

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000250

AC:

AN:

67892

Other (OTH)

AF:

0.0176

AC:

AN:

2102

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

113

226

339

452

565

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

104

130

<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:

0.000867

Hom.:

Bravo

AF:

0.0209

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.0622

AC:

259

ESP6500EA

AF:

0.000357

AC:

ExAC

AF:

0.00530

AC:

641

Asia WGS

AF:

0.00375

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

May 08, 2021

GeneDx

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

- -

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

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

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.57

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.039

Eigen

Benign

-0.11

Eigen_PC

Benign

0.060

FATHMM_MKL

Benign

0.66

LIST_S2

Benign

0.64

MetaRNN

Benign

0.0017

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.7

PhyloP100

3.3

PrimateAI

Benign

0.34

PROVEAN

Benign

-1.6

REVEL

Benign

0.058

Sift

Benign

0.23

Sift4G

Benign

0.50

Polyphen

0.044

Vest4

0.19

MVP

0.49

MPC

0.15

ClinPred

0.016

GERP RS

5.3

Varity_R

0.10

gMVP

0.15

Mutation Taster

=97/3

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