14-91283380-T-C

Position:

chr14-91283380-T-C

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_001080414.4(CCDC88C):c.4579A>G(p.Thr1527Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000756 in 1,613,492 control chromosomes in the GnomAD database, including 1 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00051 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

CCDC88C
NM_001080414.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: -3.15

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 -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0065428615).

BP6

Variant 14-91283380-T-C is Benign according to our data. Variant chr14-91283380-T-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 447019.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=2}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
CCDC88C	NM_001080414.4 linkuse as main transcript	c.4579A>G	p.Thr1527Ala	missense_variant	26/30	ENST00000389857.11
CCDC88C	XM_011536796.3 linkuse as main transcript	c.4471A>G	p.Thr1491Ala	missense_variant	26/30
CCDC88C	XM_047431418.1 linkuse as main transcript	c.4312A>G	p.Thr1438Ala	missense_variant	23/27
CCDC88C	XM_047431419.1 linkuse as main transcript	c.4579A>G	p.Thr1527Ala	missense_variant	26/28

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CCDC88C	ENST00000389857.11 linkuse as main transcript	c.4579A>G	p.Thr1527Ala	missense_variant	26/30	5	NM_001080414.4	P1	Q9P219-1
CCDC88C	ENST00000334448.5 linkuse as main transcript	n.244A>G		non_coding_transcript_exon_variant	1/6	1
CCDC88C	ENST00000556726.5 linkuse as main transcript	c.*413A>G		3_prime_UTR_variant	3/7	5

Frequencies

GnomAD3 genomes

AF:

0.000507

AC:

AN:

151982

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00184

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000656

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

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

GnomAD3 exomes

AF:

0.000109

AC:

AN:

247488

Hom.:

AF XY:

0.0000520

AC XY:

AN XY:

134624

show subpopulations

Gnomad AFR exome

AF:

0.00157

Gnomad AMR exome

AF:

0.0000581

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000557

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000308

AC:

AN:

1461510

Hom.:

Cov.:

AF XY:

0.0000248

AC XY:

AN XY:

727032

show subpopulations

Gnomad4 AFR exome

AF:

0.00114

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000507

AC:

AN:

151982

Hom.:

Cov.:

AF XY:

0.000499

AC XY:

AN XY:

74222

show subpopulations

Gnomad4 AFR

AF:

0.00184

Gnomad4 AMR

AF:

0.0000656

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000790

Hom.:

Bravo

AF:

0.000567

ESP6500AA

AF:

0.00297

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000149

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

May 12, 2023

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Hydrocephalus, nonsyndromic, autosomal recessive 1;C4518336:Spinocerebellar ataxia type 40

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Athena Diagnostics

Jan 17, 2019

- -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 03, 2021

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. -

CCDC88C-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Apr 23, 2022

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

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.057

BayesDel_addAF

Benign

-0.66

BayesDel_noAF

Benign

-0.74

CADD

Benign

0.0080

DANN

Benign

0.22

DEOGEN2

Benign

0.023

T;T

Eigen

Benign

-2.0

Eigen_PC

Benign

-2.1

FATHMM_MKL

Benign

0.021

LIST_S2

Benign

0.37

T;T

M_CAP

Benign

0.0074

MetaRNN

Benign

0.0065

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

.;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.23

PROVEAN

Benign

-0.97

N;N

REVEL

Benign

0.026

Sift

Benign

0.41

T;T

Sift4G

Benign

0.31

T;T

Polyphen

0.0

.;B

Vest4

0.057

MVP

0.15

MPC

0.13

ClinPred

0.020

GERP RS

-7.1

Varity_R

0.030

gMVP

0.16

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