rs201218801

Positions:

chr12-88059897-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PVS1_ModeratePM2PP5

The NM_025114.4(CEP290):c.6645+1G>A variant causes a splice donor change. The variant allele was found at a frequency of 0.000158 in 1,574,506 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00017 ( 0 hom. )

Consequence

CEP290
NM_025114.4 splice_donor

Scores

Splicing: ADA: 1.000

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:9U:2

Conservation

PhyloP100: 7.02

Variant links:

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 links:

LOC124902977 (HGNC:):

LOC124902977 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.016397849 fraction of the gene. No cryptic splice site detected. Exon removal is inframe change.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 12-88059897-C-T is Pathogenic according to our data. Variant chr12-88059897-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 290046.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=6, Uncertain_significance=2, Pathogenic=2}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CEP290	NM_025114.4 linkuse as main transcript	c.6645+1G>A		splice_donor_variant		ENST00000552810.6	NP_079390.3
LOC124902977	XR_007063393.1 linkuse as main transcript	n.886+2877C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CEP290	ENST00000552810.6 linkuse as main transcript	c.6645+1G>A		splice_donor_variant		1	NM_025114.4	ENSP00000448012	P4

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.000103

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000122

AC:

AN:

204712

Hom.:

AF XY:

0.000108

AC XY:

AN XY:

111122

show subpopulations

Gnomad AFR exome

AF:

0.000148

Gnomad AMR exome

AF:

0.000202

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:

0.000179

Gnomad OTH exome

AF:

0.000202

GnomAD4 exome

AF:

0.000169

AC:

241

AN:

1422398

Hom.:

Cov.:

AF XY:

0.000169

AC XY:

119

AN XY:

706088

show subpopulations

Gnomad4 AFR exome

AF:

0.0000642

Gnomad4 AMR exome

AF:

0.000143

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000191

Gnomad4 NFE exome

AF:

0.000201

Gnomad4 OTH exome

AF:

0.000204

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152108

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74280

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000994

Hom.:

Bravo

AF:

0.0000718

ExAC

AF:

0.0000912

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:9Uncertain:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:2Uncertain:1

Pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Sep 01, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Apr 19, 2022	Canonical splice site variant expected to result in aberrant splicing, although in the absence of functional evidence the actual effect of this sequence change is unknown.; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 29754767) -
Likely pathogenic, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Sep 20, 2016	- -

Senior-Loken syndrome 6;C1857780:Joubert syndrome 5;C1970161:Meckel syndrome, type 4;C2673874:Bardet-Biedl syndrome 14

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Suma Genomics, Suma Genomics

- -

CEP290-related disorder

Pathogenic:1

Likely pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 23, 2024

The CEP290 c.6645+1G>A variant is predicted to disrupt the GT donor site and interfere with normal splicing. To our knowledge, this variant has not been reported in the literature in association with CEP290-related disease. This variant is reported in 0.019% of alleles in individuals of Latino descent in gnomAD. Splicing variants in CEP290 have been reported in patients with Joubert Syndrome, Meckel Syndrome, and Leber Congenital Amaurosis and are expected to be pathogenic (Baala et al. 2007. PubMed ID: 17564974; Perrault et al. 2007. PubMed ID: 17345604; Tory et al. 2007. PubMed ID: 17409309). This variant is interpreted as likely pathogenic. -

Bardet-Biedl syndrome 14

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Mar 27, 2024

- -

Senior-Loken syndrome 6;C1857780:Joubert syndrome 5;C1857821:Leber congenital amaurosis 10;C1970161:Meckel syndrome, type 4

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

New York Genome Center

Nov 30, 2020

- -

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

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 19, 2023

This sequence change affects a donor splice site in intron 48 of the CEP290 gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in CEP290 are known to be pathogenic (PMID: 16909394, 17345604, 20690115). This variant is present in population databases (rs201218801, gnomAD 0.02%). 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: 290046). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

Meckel syndrome, type 4

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Sep 06, 2019

This variant was determined to be likely pathogenic according to ACMG Guidelines, 2015 [PMID:25741868]. -

Joubert syndrome 5

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Knight Diagnostic Laboratories, Oregon Health and Sciences University

Mar 30, 2016

This c.6645+1G>A variant is predicted to affect the splice-donor site in intron 48 of the CEP290 gene. The frequency of this variant is very low in the ExAC database and is absent in both the 1000 Genomes and Exome Sequencing Project databases. In addition, splice-site computational algorithms have predicted this variant to abrogate splicing. Loss-of-function mutations are a known mechanism of disease for this disorder; therefore, we have provisionally classified this variant as Likely Pathogenic. We have confirmed this sequence change in our laboratory using Sanger sequencing. However, splicing studies are necessary to confirm this interpretation. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 21, 2021

Punj, 2018_x000D_ _x000D_ Resulting transcript is predicted to be in-frame and is not expected to trigger nonsense-mediated mRNA decay Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.43

BayesDel_noAF

Pathogenic

0.42

CADD

Pathogenic

DANN

Uncertain

1.0

Eigen

Pathogenic

1.2

Eigen_PC

Pathogenic

1.0

FATHMM_MKL

Pathogenic

0.99

MutationTaster

Benign

1.0

D;D;D;D

GERP RS

5.3

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.95

SpliceAI score (max)

0.99

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.99

Position offset: 1

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