rs746511786

Positions:

• chr12-88130374-T-A

Variant summary

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

The NM_025114.4(CEP290):​c.563A>T​(p.Asp188Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000343 in 1,458,488 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D188N) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: CEP290 NM_025114.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 6.70

Genes affected

CEP290 (HGNC:29021): (centrosomal protein 290) This gene encodes a protein with 13 putative coiled-coil domains, a region with homology to SMC chromosome segregation ATPases, six KID motifs, three tropomyosin homology domains and an ATP/GTP binding site motif A. The protein is localized to the centrosome and cilia and has sites for N-glycosylation, tyrosine sulfation, phosphorylation, N-myristoylation, and amidation. Mutations in this gene have been associated with Joubert syndrome and nephronophthisis and the presence of antibodies against this protein is associated with several forms of cancer. [provided by RefSeq, Jul 2008]

CEP290 (HGNC:):

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/exons	MANE	Protein	UniProt
CEP290	NM_025114.4	c.563A>T	p.Asp188Val	missense_variant	9/54	ENST00000552810.6	NP_079390.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CEP290	ENST00000552810.6	c.563A>T	p.Asp188Val	missense_variant	9/54	1	NM_025114.4	ENSP00000448012.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000162 AC: 4 AN: 246228 Hom.: 0 AF XY: 0.0000150 AC XY: 2 AN XY: 133608

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000890

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000892

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000343 AC: 5 AN: 1458488 Hom.: 0 Cov.: 31 AF XY: 0.00000414 AC XY: 3 AN XY: 725448

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000678

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.0000151

ExAC AF: 0.00000828 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Nov 10, 2015

- -

Leber congenital amaurosis Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Natera, Inc.

Oct 28, 2019

- -

Meckel-Gruber syndrome;C0431399:Familial aplasia of the vermis;C0687120:Nephronophthisis Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 14, 2022

This sequence change replaces aspartic acid, which is acidic and polar, with valine, which is neutral and non-polar, at codon 188 of the CEP290 protein (p.Asp188Val). This variant is present in population databases (rs746511786, gnomAD 0.009%). This variant has not been reported in the literature in individuals affected with CEP290-related conditions. ClinVar contains an entry for this variant (Variation ID: 434743). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Pathogenic	0.16	D
BayesDel_noAF	Pathogenic	0.20
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.59	.;D;.
Eigen	Uncertain	0.55
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.94	D;D;D
M_CAP	Benign	0.078	D
MetaRNN	Uncertain	0.65	D;D;D
MetaSVM	Benign	-0.50	T
MutationAssessor	Uncertain	2.1	.;M;.
PrimateAI	Uncertain	0.56	T
PROVEAN	Uncertain	-2.8	D;D;.
REVEL	Uncertain	0.41
Sift	Uncertain	0.0040	D;D;.
Sift4G	Uncertain	0.0050	D;D;D
Polyphen		1.0	.;D;.
Vest4		0.91
MutPred		0.26		Gain of catalytic residue at D188 (P = 0.0103);Gain of catalytic residue at D188 (P = 0.0103);Gain of catalytic residue at D188 (P = 0.0103);
MVP		0.82
MPC		0.39
ClinPred		0.86	D
GERP RS		5.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.31
gMVP		0.30

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

Other links and lift over

dbSNP: rs746511786; hg19: chr12-88524151;