rs878853328

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_006269.2(RP1):c.2032C>T(p.Gln678*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,650 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

RP1
NM_006269.2 stop_gained

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:5

Conservation

PhyloP100: 0.0680

Publications

1 publications found

Variant links:

Genes affected

RP1 (HGNC:10263): (RP1 axonemal microtubule associated) This gene encodes a member of the doublecortin family. The protein encoded by this gene contains two doublecortin domains, which bind microtubules and regulate microtubule polymerization. The encoded protein is a photoreceptor microtubule-associated protein and is required for correct stacking of outer segment disc. This protein and the RP1L1 protein, another retinal-specific protein, play essential and synergistic roles in affecting photosensitivity and outer segment morphogenesis of rod photoreceptors. Because of its response to in vivo retinal oxygen levels, this protein was initially named ORP1 (oxygen-regulated protein-1). This protein was subsequently designated RP1 (retinitis pigmentosa 1) when it was found that mutations in this gene cause autosomal dominant retinitis pigmentosa. Mutations in this gene also cause autosomal recessive retinitis pigmentosa. Transcript variants resulted from an alternative promoter and alternative splicings have been found, which overlap the current reference sequence and has several exons upstream and downstream of the current reference sequence. However, the biological validity and full-length nature of some variants cannot be determined at this time.[provided by RefSeq, Sep 2010]

RP1 Gene-Disease associations (from GenCC):

RP1-related dominant retinopathy
Inheritance: AD, SD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, ClinGen
retinitis pigmentosa 1
Inheritance: AR, AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Illumina, Labcorp Genetics (formerly Invitae), Ambry Genetics
RP1-related recessive retinopathy
Inheritance: AR Classification: DEFINITIVE Submitted by: Ambry Genetics, ClinGen
retinitis pigmentosa
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

RP1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 18 ACMG points.

PVS1

Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 215 pathogenic variants in the truncated region.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 8-54625914-C-T is Pathogenic according to our data. Variant chr8-54625914-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 236416.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RP1	NM_006269.2 link	c.2032C>T	p.Gln678*	stop_gained	Exon 4 of 4	ENST00000220676.2	NP_006260.1	P56715

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
RP1	ENST00000220676.2 link	c.2032C>T	p.Gln678*	stop_gained	Exon 4 of 4	1	NM_006269.2	ENSP00000220676.1	P56715
RP1	ENST00000637698.1 link	c.787+3626C>T		intron_variant	Intron 3 of 28	5		ENSP00000490104.1	A0A1B0GUH0
RP1	ENST00000636932.1 link	c.787+3626C>T		intron_variant	Intron 3 of 22	5		ENSP00000489857.1	A0A1B0GTV9

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250604

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461650

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727116

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33466

American (AMR)

AF:

0.0000224

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39672

South Asian (SAS)

AF:

0.00

AC:

AN:

86220

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53394

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111928

Other (OTH)

AF:

0.00

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Retinal dystrophy

Pathogenic:2

Oct 01, 2023

Dept Of Ophthalmology, Nagoya University

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:research

- -

Centre for Genomic Medicine, Manchester, Central Manchester University Hospitals

Significance:Likely pathogenic

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Retinitis pigmentosa

Pathogenic:2

Jan 01, 2015

NIHR Bioresource Rare Diseases, University of Cambridge

Significance:Likely pathogenic

Review Status:no assertion criteria provided

Collection Method:research

- -

Oct 01, 2024

Lab De Baere, Eye and Developmental Genetics Lab, Ghent University

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:research

ACMG/AMP guidelines: PM2_PP, PP4_PP, PVS1_PS2, PP1 -

not provided

Pathogenic:1

Oct 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change creates a premature translational stop signal (p.Gln678*) in the RP1 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 1479 amino acid(s) of the RP1 protein. This variant is present in population databases (no rsID available, gnomAD 0.003%). This premature translational stop signal has been observed in individuals with autosomal dominant retinitis pigmentosa (PMID: 28041643; internal data). ClinVar contains an entry for this variant (Variation ID: 236416). This variant disrupts the C-terminus of the RP1 protein. Many variants that disrupt this region have been reported in individuals with either autosomal dominant or autosomal recessive retinitis pigmentosa (PMID: 11527933, 19933189, 29425069, 30027431, 33681214). Therefore, variants that disrupt this region are expected to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.57

BayesDel_noAF

Pathogenic

0.27

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

Eigen

Uncertain

0.27

Eigen_PC

Benign

-0.027

FATHMM_MKL

Benign

0.12

PhyloP100

0.068

Vest4

0.82

GERP RS

3.0

Mutation Taster

=0/200

disease causing (ClinVar)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over