12-55721246-G-A

Position:

chr12-55721246-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002905.5(RDH5):c.62G>A(p.Arg21Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000706 in 1,613,876 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in UniProt.

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000070 ( 0 hom. )

Consequence

RDH5
NM_002905.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.200

Variant links:

Genes affected

RDH5 (HGNC:9940): (retinol dehydrogenase 5) This gene encodes an enzyme belonging to the short-chain dehydrogenases/reductases (SDR) family. This retinol dehydrogenase functions to catalyze the final step in the biosynthesis of 11-cis retinaldehyde, which is the universal chromophore of visual pigments. Mutations in this gene cause autosomal recessive fundus albipunctatus, a rare form of night blindness that is characterized by a delay in the regeneration of cone and rod photopigments. Alternative splicing results in multiple transcript variants. Read-through transcription also exists between this gene and the neighboring upstream BLOC1S1 (biogenesis of lysosomal organelles complex-1, subunit 1) gene. [provided by RefSeq, Dec 2010]

RDH5 links:

ENSG00000258311 (HGNC:):

ENSG00000258311 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.024056405).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RDH5	NM_002905.5 link	c.62G>A	p.Arg21Gln	missense_variant	2/5	ENST00000257895.10	NP_002896.2	Q92781A0A024RB18
RDH5	NM_001199771.3 link	c.62G>A	p.Arg21Gln	missense_variant	2/5		NP_001186700.1	Q92781A0A024RB18
BLOC1S1-RDH5	NR_037658.1 link	n.370-443G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RDH5	ENST00000257895.10 link	c.62G>A	p.Arg21Gln	missense_variant	2/5	1	NM_002905.5	ENSP00000257895.6		Q92781
ENSG00000258311	ENST00000550412.5 link	c.352-443G>A		intron_variant		2		ENSP00000447650.1		F8W036

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152194

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00259

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000957

AC:

AN:

250760

Hom.:

AF XY:

0.000103

AC XY:

AN XY:

135732

show subpopulations

Gnomad AFR exome

AF:

0.0000620

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00179

Gnomad EAS exome

AF:

0.0000545

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.0000265

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000705

AC:

103

AN:

1461682

Hom.:

Cov.:

AF XY:

0.0000660

AC XY:

AN XY:

727140

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00203

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000376

Gnomad4 NFE exome

AF:

0.0000342

Gnomad4 OTH exome

AF:

0.0000993

GnomAD4 genome

AF:

0.0000723

AC:

AN:

152194

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00259

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000197

Hom.:

Bravo

AF:

0.0000793

ExAC

AF:

0.0000577

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 18, 2022

This variant has not been reported in the literature in individuals affected with RDH5-related conditions. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. 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 RDH5 protein function. ClinVar contains an entry for this variant (Variation ID: 969675). This variant is present in population databases (rs3138143, gnomAD 0.2%). This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 21 of the RDH5 protein (p.Arg21Gln). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.66

D;D

Eigen

Benign

-0.80

Eigen_PC

Benign

-0.76

FATHMM_MKL

Benign

0.13

LIST_S2

Benign

0.67

.;T

M_CAP

Benign

0.018

MetaRNN

Benign

0.024

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

L;L

PrimateAI

Benign

0.30

PROVEAN

Benign

-2.3

N;N

REVEL

Benign

0.083

Sift

Benign

0.049

D;D

Sift4G

Benign

0.065

T;T

Polyphen

0.090

B;B

Vest4

0.12

MutPred

0.28

Gain of catalytic residue at A26 (P = 0.0223);Gain of catalytic residue at A26 (P = 0.0223);

MVP

0.59

MPC

0.17

ClinPred

0.023

GERP RS

0.73

Varity_R

0.091

gMVP

0.45

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over