3-129529074-G-T

Position:

• chr3-129529074-G-T

Variant summary

Our verdict is Pathogenic. Variant got 15 ACMG points: 15P and 0B. PM1 PM2 PM5 PP3 PP5_Very_Strong

The NM_000539.3(RHO):​c.341G>T​(p.Gly114Val) variant causes a missense change involving the alteration of a 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 (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G114D) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: RHO NM_000539.3 missense
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: 8.00

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 15 ACMG points.

• PM1: In a transmembrane_region Helical; Name=3 (size 22) in uniprot entity OPSD_HUMAN there are 13 pathogenic changes around while only 0 benign (100%) 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 chr3-129529074-G-A is described in Lovd as [Likely_pathogenic].
• PP3: Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
• PP5: Variant 3-129529074-G-T is Pathogenic according to our data. Variant chr3-129529074-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 866113.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr3-129529074-G-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.341G>T	p.Gly114Val	missense_variant	1/5	ENST00000296271.4	NP_000530.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RHO	ENST00000296271.4	c.341G>T	p.Gly114Val	missense_variant	1/5	1	NM_000539.3	ENSP00000296271	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 06, 2024

This sequence change replaces glycine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 114 of the RHO protein (p.Gly114Val). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with autosomal dominant retinitis pigmentosa (PMID: 10967073). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 866113). 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 have shown that this missense change affects RHO function (PMID: 30977563). This variant disrupts the p.Gly114 amino acid residue in RHO. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 8088850, 30977563). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. -

Retinal dystrophy Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Blueprint Genetics

Jul 26, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.30	D
BayesDel_noAF	Pathogenic	0.19
CADD	Pathogenic	34
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.83	D
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.92
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Benign	-0.36	T
MutationAssessor	Pathogenic	4.4	H
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.76	T
PROVEAN	Pathogenic	-7.1	D
REVEL	Pathogenic	0.81
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.97
MutPred		0.92		Loss of catalytic residue at L119 (P = 0.2367);
MVP		0.95
MPC		0.97
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.99
gMVP		0.94

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.64		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.64		Position offset: -2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs104893788; hg19: chr3-129247917;