rs104893773

chr3-129529049-G-Achr3-129529049-G-Cchr3-129529049-G-T

Variant summary

Our verdict is Pathogenic. Variant got 22 ACMG points: 22P and 0B. PS1 PM1 PM2 PM5 PP3_Strong PP5_Very_Strong

The NM_000539.3(RHO):c.316G>A(p.Gly106Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,928 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another nucleotide change resulting in same amino acid change has been previously reported as Pathogenicin ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G106W) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: RHO NM_000539.3 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:9
• Conservation: PhyloP100: 10.0

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 22 ACMG points.

• PS1: Transcript NM_000539.3 (RHO) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in ClinVar as 956525
• PM1: In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 6 uncertain in NM_000539.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr3-129529049-G-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 13022.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.992
• PP5: Variant 3-129529049-G-A is Pathogenic according to our data. Variant chr3-129529049-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 13038.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-129529049-G-A is described in Lovd as [Pathogenic]. Variant chr3-129529049-G-A is described in Lovd as [Likely_pathogenic]. Variant chr3-129529049-G-A is described in Lovd as [Pathogenic]. Variant chr3-129529049-G-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RHO	NM_000539.3	c.316G>A	p.Gly106Arg	missense_variant	1/5	ENST00000296271.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RHO	ENST00000296271.4	c.316G>A	p.Gly106Arg	missense_variant	1/5	1	NM_000539.3	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.0000160 AC: 4 AN: 250554 Hom.: 0 AF XY: 0.00000739 AC XY: 1 AN XY: 135378

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.0000996

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000177

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000411 AC: 6 AN: 1460928 Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2 AN XY: 726572

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.0000765

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Alfa AF: 0.000146 Hom.: 0

ExAC AF: 0.0000165 AC: 2

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:9

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Retinitis pigmentosa 4 Pathogenic:3

Likely pathogenic, criteria provided, single submitter	clinical testing	Centre for Genomic Medicine, Manchester, Central Manchester University Hospitals	Sep 01, 2020	- -
Pathogenic, no assertion criteria provided	literature only	OMIM	Aug 01, 1993	- -
Pathogenic, criteria provided, single submitter	research	Ocular Genomics Institute, Massachusetts Eye and Ear	Apr 08, 2021	The RHO c.316G>A 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, PP3, PP1-S, PS3. Based on this evidence we have classified this variant as Pathogenic. -

not provided Pathogenic:2

Pathogenic, criteria provided, single submitter	clinical testing	Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen	Jun 17, 2021	- -
Pathogenic, criteria provided, single submitter	clinical testing	Invitae	Nov 13, 2023	This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 106 of the RHO protein (p.Gly106Arg). This variant is present in population databases (rs104893773, gnomAD 0.01%). This missense change has been observed in individuals with autosomal dominant retinitis pigmentosa (PMID: 1301135, 8905849, 11094174, 28559085). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 13038). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt RHO protein function with a positive predictive value of 80%. Experimental studies are conflicting or provide insufficient evidence to determine the effect of this variant on RHO function (PMID: 24520188). For these reasons, this variant has been classified as Pathogenic. -

Retinal dystrophy Pathogenic:2

Pathogenic, criteria provided, single submitter	research	Dept Of Ophthalmology, Nagoya University	Oct 01, 2023	- -
Pathogenic, criteria provided, single submitter	clinical testing	Blueprint Genetics	Aug 06, 2019	- -

Retinitis pigmentosa Pathogenic:2

Pathogenic, no assertion criteria provided	research	Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet	Apr 01, 2018	- -
Pathogenic, criteria provided, single submitter	research	Ophthalmic Genetics Group, Institute of Molecular and Clinical Ophthalmology Basel	Jul 24, 2023	Clinical significance based on ACMG v2.0 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.28
Cadd	Pathogenic	32
Dann	Pathogenic	1.0
DEOGEN2	Pathogenic	0.85	D
Eigen	Pathogenic	1.2
Eigen_PC	Pathogenic	1.1
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D
M_CAP	Uncertain	0.24	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Uncertain	0.52	D
MutationAssessor	Pathogenic	4.6	H
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.81	D
PROVEAN	Pathogenic	-7.3	D
REVEL	Pathogenic	0.66
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.98
MutPred		0.97		Gain of methylation at G106 (P = 0.0238);
MVP		0.93
MPC		0.95
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.97
gMVP		0.97

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: rs104893773; hg19: chr3-129247892; COSMIC: COSV99960608;