chr14-91272677-G-A

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP4

The NM_001080414.4(CCDC88C):c.6035C>T(p.Pro2012Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000174 in 1,611,428 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 Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

CCDC88C
NM_001080414.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 9.42

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.34713933).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC88C	NM_001080414.4 link	c.6035C>T	p.Pro2012Leu	missense_variant	Exon 30 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.6035C>T	p.Pro2012Leu	missense_variant	Exon 30 of 30	5	NM_001080414.4	ENSP00000374507.6		Q9P219-1
CCDC88C	ENST00000556726 link	c.*1869C>T		3_prime_UTR_variant	Exon 7 of 7	5		ENSP00000452406.1		H0YJX5

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000413

AC:

AN:

242324

Hom.:

AF XY:

0.0000377

AC XY:

AN XY:

132788

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000581

Gnomad ASJ exome

AF:

0.000303

Gnomad EAS exome

AF:

0.000112

Gnomad SAS exome

AF:

0.0000328

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000184

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1459236

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

725960

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.000153

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.0000696

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000720

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152192

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74338

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000676

Hom.:

Bravo

AF:

0.0000416

ExAC

AF:

0.0000667

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Spinocerebellar ataxia type 40

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Foundation for Research in Genetics and Endocrinology, FRIGE's Institute of Human Genetics

Sep 08, 2021

A heterozygous missense variation in exon 30 of the CCDC88C gene that results in the amino acid substitution of leucine for proline at codon 2012 was detected. The observed variant c.6035C>T (p.Pro2012Leu) has not been reported in the 1000 genomes and has a minor allele frequency of 0.003% in the gnomAD database. The in silico prediction of the variant are possibly damaging by PolyPhen-2 (HumDiv) and damaging by SIFT and MutationTaster2. The reference codon is conserved across species. In summary, the variant meets our criteria to be classified as a variant of uncertain significance. -

CCDC88C-related disorder

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 26, 2024

The CCDC88C c.6035C>T variant is predicted to result in the amino acid substitution p.Pro2012Leu. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.030% of alleles in individuals of Ashkenazi Jewish descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.32

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.26

T;T

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.75

T;T

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.35

T;T

MetaSVM

Benign

-0.40

MutationAssessor

Pathogenic

2.9

.;M

PrimateAI

Uncertain

0.59

PROVEAN

Pathogenic

-4.7

.;D

REVEL

Uncertain

0.33

Sift

Benign

0.068

.;T

Sift4G

Uncertain

0.0080

D;D

Polyphen

1.0

.;D

Vest4

0.67

MutPred

0.21

.;Gain of solvent accessibility (P = 0.0471);

MVP

0.60

MPC

0.58

ClinPred

0.84

GERP RS

4.1

Varity_R

0.15

gMVP

0.37

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

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