14-91297376-G-T

Variant names:

• chr14-91297376-G-T
• NM_001080414.4:c.3895C>A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001080414.4(CCDC88C):​c.3895C>A​(p.Arg1299Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,116 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: CCDC88C NM_001080414.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.94

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC88C	NM_001080414.4	c.3895C>A	p.Arg1299Ser	missense_variant	Exon 22 of 30	ENST00000389857.11	NP_001073883.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC88C	ENST00000389857.11	c.3895C>A	p.Arg1299Ser	missense_variant	Exon 22 of 30	5	NM_001080414.4	ENSP00000374507.6

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461116 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 726746

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.32
BayesDel_addAF	Benign	-0.091	T
BayesDel_noAF	Benign	-0.37
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.16	T
Eigen	Uncertain	0.60
Eigen_PC	Uncertain	0.60
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.85	D
M_CAP	Benign	0.012	T
MetaRNN	Uncertain	0.66	D
MetaSVM	Benign	-1.2	T
MutationAssessor	Uncertain	2.5	M
PrimateAI	Benign	0.34	T
PROVEAN	Uncertain	-2.7	D
REVEL	Benign	0.15
Sift	Uncertain	0.011	D
Sift4G	Benign	0.079	T
Polyphen		0.97	D
Vest4		0.56
MutPred		0.34		Loss of MoRF binding (P = 0.0398);
MVP		0.73
MPC		0.16
ClinPred		0.94	D
GERP RS		5.3
Varity_R		0.31
gMVP		0.32

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr14-91763720;