3-129532624-TCTG-T

Position:

• chr3-129532624-TCTG-T

Variant summary

Our verdict is Pathogenic. Variant got 13 ACMG points: 13P and 0B. PM1 PM2 PM4_Supporting PP5_Very_Strong

The ENST00000296271.4(RHO):​c.792_794del​(p.Cys264del) variant causes a inframe deletion change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RHO ENST00000296271.4 inframe_deletion
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: 8.11

Genes affected

RHO (HGNC:10012): (rhodopsin) The protein encoded by this gene is found in rod cells in the back of the eye and is essential for vision in low-light conditions. The encoded protein binds to 11-cis retinal and is activated when light hits the retinal molecule. Defects in this gene are a cause of congenital stationary night blindness. [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Pathogenic. Variant got 13 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in ENST00000296271.4
• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in ENST00000296271.4. Strenght limited to Supporting due to length of the change: 1aa.
• PP5: Variant 3-129532624-TCTG-T is Pathogenic according to our data. Variant chr3-129532624-TCTG-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 13051.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-129532624-TCTG-T is described in Lovd as [Likely_pathogenic]. Variant chr3-129532624-TCTG-T is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RHO	NM_000539.3	c.792_794del	p.Cys264del	inframe_deletion	4/5	ENST00000296271.4	NP_000530.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RHO	ENST00000296271.4	c.792_794del	p.Cys264del	inframe_deletion	4/5	1	NM_000539.3	ENSP00000296271	P1

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Retinitis pigmentosa 4 Pathogenic:2

Pathogenic, no assertion criteria provided	literature only	OMIM	May 15, 1994	- -
Likely pathogenic, criteria provided, single submitter	research	Ocular Genomics Institute, Massachusetts Eye and Ear	Apr 08, 2021	The RHO c.792_794del variant was identified in an individual with retinitis pigmentosa with a presumed dominant inheritance pattern. Through a review of available evidence we were able to apply the following criteria: PM2, PS3, PM4. Based on this evidence we have classified this variant as Likely Pathogenic. -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 28, 2022

For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this variant affects RHO function (PMID: 30977563). Algorithms developed to predict the effect of variants on protein structure and function are not available or were not evaluated for this variant. ClinVar contains an entry for this variant (Variation ID: 13051). This variant has been observed in individual(s) with autosomal dominant retinitis pigmentosa (PMID: 8088850). It has also been observed to segregate with disease in related individuals. This variant is not present in population databases (gnomAD no frequency). This variant, c.792_794del, results in the deletion of 1 amino acid(s) of the RHO protein (p.Cys264del), but otherwise preserves the integrity of the reading frame. -

Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs121918590; hg19: chr3-129251467;