chr12-88049348-C-T

Variant names:

• chr12-88049348-C-T
• rs200178519
• NM_025114.4:c.7276G>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_025114.4(CEP290):​c.7276G>A​(p.Asp2426Asn) variant causes a missense change. The variant allele was found at a frequency of 0.000141 in 1,572,888 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.00020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00014 (0 hom.)
• Consequence: CEP290 NM_025114.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:11
• Conservation: PhyloP100: 7.13
• Publications: 2 publications found

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]

RLIG1 (HGNC:25322): (RNA 5'-phosphate and 3'-OH ligase 1) Predicted to act upstream of or within hematopoietic progenitor cell differentiation. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CEP290	NM_025114.4	c.7276G>A	p.Asp2426Asn	missense_variant	Exon 54 of 54	ENST00000552810.6	NP_079390.3
RLIG1	NM_001009894.3	c.*926C>T		3_prime_UTR_variant	Exon 7 of 7	ENST00000356891.4	NP_001009894.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CEP290	ENST00000552810.6	c.7276G>A	p.Asp2426Asn	missense_variant	Exon 54 of 54	1	NM_025114.4	ENSP00000448012.1
RLIG1	ENST00000356891.4	c.*926C>T		3_prime_UTR_variant	Exon 7 of 7	1	NM_001009894.3	ENSP00000349358.3

Frequencies

GnomAD3 genomes AF: 0.000197 AC: 30 AN: 151920 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000459

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: 0.000295

Gnomad OTH AF: 0.000479

GnomAD2 exomes AF: 0.0000862 AC: 20 AN: 232108 AF XY: 0.0000556

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000652

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000159

Gnomad OTH exome AF: 0.000176

GnomAD4 exome AF: 0.000135 AC: 192 AN: 1420968 Hom.: 0 Cov.: 26 AF XY: 0.000139 AC XY: 98 AN XY: 707490

African (AFR) AF: 0.00 AC: 0 AN: 31970

American (AMR) AF: 0.000145 AC: 6 AN: 41416

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25618

East Asian (EAS) AF: 0.00 AC: 0 AN: 39254

South Asian (SAS) AF: 0.0000124 AC: 1 AN: 80428

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53204

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4998

European-Non Finnish (NFE) AF: 0.000162 AC: 176 AN: 1085112

Other (OTH) AF: 0.000153 AC: 9 AN: 58968

GnomAD4 genome AF: 0.000197 AC: 30 AN: 151920 Hom.: 0 Cov.: 32 AF XY: 0.000108 AC XY: 8 AN XY: 74182

African (AFR) AF: 0.0000483 AC: 2 AN: 41422

American (AMR) AF: 0.000459 AC: 7 AN: 15242

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10594

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000295 AC: 20 AN: 67876

Other (OTH) AF: 0.000479 AC: 1 AN: 2088

Alfa AF: 0.000283 Hom.: 0

Bravo AF: 0.000162

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.00 AC: 0

ExAC AF: 0.0000747 AC: 9

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:11

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Jan 26, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.7276G>A (p.D2426N) alteration is located in exon 54 (coding exon 53) of the CEP290 gene. This alteration results from a G to A substitution at nucleotide position 7276, causing the aspartic acid (D) at amino acid position 2426 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Senior-Loken syndrome 6 Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

CEP290-related disorder Uncertain:1

Mar 03, 2024

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The CEP290 c.7276G>A variant is predicted to result in the amino acid substitution p.Asp2426Asn. This variant has been reported in an individual with retinal and optical nerve disorder (Table S12, Diñeiro et al. 2020. PubMed ID: 32483926). This variant is reported in 0.019% of alleles in individuals of European (Non-Finnish) descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Meckel-Gruber syndrome;C0431399:Joubert syndrome;C0687120:Nephronophthisis Uncertain:1

Oct 16, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 2426 of the CEP290 protein (p.Asp2426Asn). This variant is present in population databases (rs200178519, gnomAD 0.02%). This missense change has been observed in individual(s) with CEP290-related conditions (PMID: 32483926). ClinVar contains an entry for this variant (Variation ID: 310586). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. -

Leber congenital amaurosis 10 Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Leber congenital amaurosis Uncertain:1

Mar 13, 2020

Natera, Inc.

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not provided Uncertain:1

Nov 28, 2022

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 32483926) -

Bardet-Biedl syndrome 14 Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Meckel syndrome, type 4 Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Senior-Loken syndrome 6;C1857780:Joubert syndrome 5;C1857821:Leber congenital amaurosis 10;C1970161:Meckel syndrome, type 4;C2673874:Bardet-Biedl syndrome 14 Uncertain:1

May 21, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Joubert syndrome 5 Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.79
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.11
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.29	.;.;T
Eigen	Pathogenic	0.81
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	D;D;D
M_CAP	Uncertain	0.17	D
MetaRNN	Uncertain	0.69	D;D;D
MetaSVM	Uncertain	0.34	D
MutationAssessor	Uncertain	2.6	.;.;M
PhyloP100		7.1
PrimateAI	Pathogenic	0.85	D
PROVEAN	Benign	-1.6	N;N;N
REVEL	Uncertain	0.43
Sift	Pathogenic	0.0	D;D;D
Sift4G	Uncertain	0.020	D;D;D
Polyphen		1.0	.;.;D
Vest4		0.79
MVP		0.93
MPC		0.34
ClinPred		0.23	T
GERP RS		5.7
Varity_R		0.45
gMVP		0.39
Mutation Taster		=33/67	disease causing

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: rs200178519; hg19: chr12-88443125;