rs756323667

Variant names:

• chr9-78236402-C-T
• rs756323667
• NM_001330691.3:c.52C>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001330691.3(CEP78):​c.52C>T​(p.His18Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.0000346 in 1,444,580 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. H18H) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000035 (0 hom.)
• Consequence: CEP78 NM_001330691.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.67
• Publications: 0 publications found

Genes affected

CEP78 (HGNC:25740): (centrosomal protein 78) This gene encodes a centrosomal protein that is both required for the regulation of centrosome-related events during the cell cycle, and required for ciliogenesis. The encoded protein has an N-terminal leucine-rich repeat (LRR) domain with six consecutive LRR repeats, and a C-terminal coiled-coil domain. It interacts with the N-terminal catalytic domain of polo-like kinase 4 (PLK4) and colocalizes with PLK4 to the distal end of the centriole. Naturally occurring mutations in this gene cause defects in primary cilia that result in retinal degeneration and sensorineural hearing loss which are associated with cone-rod degeneration disease as well as Usher syndrome. Low expression of this gene is associated with poor prognosis of colorectal cancer patients. [provided by RefSeq, Mar 2017]

CEP78 Gene-Disease associations (from GenCC):

• cone-rod dystrophy and hearing loss

  Inheritance: AR, Unknown Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen
• cone-rod dystrophy and hearing loss 1

  Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Ambry Genetics
• Usher syndrome type 3

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.26842892).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001330691.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CEP78	NM_001330691.3	MANE Select	c.52C>T	p.His18Tyr	missense	Exon 1 of 17	NP_001317620.1	Q5JTW2-3
	CEP78	NM_001098802.3		c.52C>T	p.His18Tyr	missense	Exon 1 of 16	NP_001092272.1	Q5JTW2-2
	CEP78	NM_001349838.2		c.52C>T	p.His18Tyr	missense	Exon 1 of 16	NP_001336767.1	A0A2R8YCP0

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CEP78	ENST00000643273.2	MANE Select	c.52C>T	p.His18Tyr	missense	Exon 1 of 17	ENSP00000496423.2	Q5JTW2-3
	CEP78	ENST00000376597.9	TSL:1	c.52C>T	p.His18Tyr	missense	Exon 1 of 16	ENSP00000365782.4	Q5JTW2-2
	CEP78	ENST00000643499.1		c.52C>T	p.His18Tyr	missense	Exon 1 of 17	ENSP00000495962.1	A0A2R8Y7A4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.0000139 AC: 3 AN: 215798 AF XY: 0.00000847

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000316

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000346 AC: 50 AN: 1444580 Hom.: 0 Cov.: 30 AF XY: 0.0000363 AC XY: 26 AN XY: 717102

African (AFR) AF: 0.00 AC: 0 AN: 33164

American (AMR) AF: 0.0000234 AC: 1 AN: 42742

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25750

East Asian (EAS) AF: 0.00 AC: 0 AN: 38892

South Asian (SAS) AF: 0.00 AC: 0 AN: 83764

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50188

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5750

European-Non Finnish (NFE) AF: 0.0000444 AC: 49 AN: 1104586

Other (OTH) AF: 0.00 AC: 0 AN: 59744

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000508 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000831 AC: 1

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.32	T
BayesDel_noAF	Benign	-0.60
CADD	Benign	21
DANN	Benign	0.92
DEOGEN2	Benign	0.039	T
Eigen	Benign	0.15
Eigen_PC	Benign	0.19
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Benign	0.85	T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.27	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.2	L
PhyloP100		3.7
PrimateAI	Pathogenic	0.86	D
PROVEAN	Benign	-0.87	N
REVEL	Benign	0.080
Sift	Benign	0.38	T
Sift4G	Benign	0.14	T
Polyphen		0.10	B
Vest4		0.11
MutPred		0.54		Loss of sheet (P = 0.0228)
MVP		0.43
MPC		0.11
ClinPred		0.46	T
GERP RS		5.2
PromoterAI		0.063	Neutral
Varity_R		0.20
gMVP		0.70
Mutation Taster		=91/9	polymorphism

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

Other links and lift over

dbSNP: rs756323667; hg19: chr9-80851318;