3-129532727-C-G

Position:

• chr3-129532727-C-G

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM2 PP3_Strong PP5_Very_Strong

The NM_000539.3(RHO):​c.891C>G​(p.Ser297Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. S297S) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: RHO NM_000539.3 missense
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:3
• Conservation: PhyloP100: -0.109

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 14 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.983
• PP5: Variant 3-129532727-C-G is Pathogenic according to our data. Variant chr3-129532727-C-G is described in ClinVar as [Pathogenic]. Clinvar id is 523376.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-129532727-C-G is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RHO	NM_000539.3	c.891C>G	p.Ser297Arg	missense_variant	4/5	ENST00000296271.4	NP_000530.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RHO	ENST00000296271.4	c.891C>G	p.Ser297Arg	missense_variant	4/5	1	NM_000539.3	ENSP00000296271.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Pigmentary retinal dystrophy Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Jan 01, 2016

This variant was classified as: Pathogenic. -

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Apr 28, 2022

This sequence change replaces serine, which is neutral and polar, with arginine, which is basic and polar, at codon 297 of the RHO protein (p.Ser297Arg). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with autosomal dominant retinitis pigmentosa (PMID: 7987331, 10967073; Invitae). ClinVar contains an entry for this variant (Variation ID: 523376). 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: "Possibly Damaging"; Align-GVGD: "Class C15"). Experimental studies have shown that this missense change affects RHO function (PMID: 9380676, 30977563). For these reasons, this variant has been classified as Pathogenic. -

Nystagmus;C0029128:Optic disc drusen;C0035305:Retinal detachment;C0086543:Cataract;C0154832:Exudative retinopathy;C0240897:Retinal exudate;C0456909:Blindness;C1839364:Progressive visual loss;C1862475:Abnormality of retinal pigmentation;C4023678:Monocular strabismus;C4551714:Rod-cone dystrophy Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Centre for Mendelian Genomics, University Medical Centre Ljubljana

Jan 01, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.11
CADD	Benign	17
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.88	D
Eigen	Benign	-0.27
Eigen_PC	Benign	-0.52
FATHMM_MKL	Benign	0.094	N
LIST_S2	Uncertain	0.94	D
M_CAP	Benign	0.066	D
MetaRNN	Pathogenic	0.98	D
MetaSVM	Benign	-0.77	T
MutationAssessor	Pathogenic	3.5	M
PrimateAI	Uncertain	0.58	T
PROVEAN	Uncertain	-2.8	D
REVEL	Uncertain	0.30
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0050	D
Polyphen		0.76	P
Vest4		0.98
MutPred		0.88		Gain of methylation at S297 (P = 0.0225);
MVP		0.84
MPC		0.72
ClinPred		0.99	D
GERP RS		-1.9
Varity_R		0.96
gMVP		0.94

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

LitVar

Other links and lift over

dbSNP: rs142285818; hg19: chr3-129251570;