rs774122562

Variant names:

• chr12-55721469-G-A
• rs774122562
• NM_002905.5:c.285G>A

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_002905.5(RDH5):​c.285G>A​(p.Trp95*) variant causes a stop gained change. The variant allele was found at a frequency of 0.00000343 in 1,458,464 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: RDH5 NM_002905.5 stop_gained
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4 O:1
• Conservation: PhyloP100: 5.90
• Publications: 4 publications found

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 Gene-Disease associations (from GenCC):

• fundus albipunctatus

  Inheritance: AR, SD, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P, Orphanet
• RDH5-related retinopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen

ENSG00000258311 (HGNC:):

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 12-55721469-G-A is Pathogenic according to our data. Variant chr12-55721469-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 208608.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RDH5	NM_002905.5	c.285G>A	p.Trp95*	stop_gained	Exon 2 of 5	ENST00000257895.10	NP_002896.2
RDH5	NM_001199771.3	c.285G>A	p.Trp95*	stop_gained	Exon 2 of 5		NP_001186700.1
BLOC1S1-RDH5	NR_037658.1	n.370-220G>A		intron_variant	Intron 3 of 5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RDH5	ENST00000257895.10	c.285G>A	p.Trp95*	stop_gained	Exon 2 of 5	1	NM_002905.5	ENSP00000257895.6
ENSG00000258311	ENST00000550412.5	c.352-220G>A		intron_variant	Intron 3 of 3	2		ENSP00000447650.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000282 AC: 7 AN: 247944 AF XY: 0.00000744

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000381

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000343 AC: 5 AN: 1458464 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 725778

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.000126 AC: 5 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50036

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111986

Other (OTH) AF: 0.00 AC: 0 AN: 60378

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.0000247 AC: 3

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4 Other:1

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Pigmentary retinal dystrophy Pathogenic:2

Dec 30, 2014

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The Trp95X variant in RDH5 has been reported in 1 compound heterozygous Asian individual with fundus albipunctatus (Wang 2012). This variant has also been identified in 3/8708 of East Asian chromosomes by the Exome aggregation Consortium (http://exac.broadinstitute.org). Although this variant has been seen in the general population, its frequency is low enough to be consistent with a recessive carrier frequency. This nonsense variant leads to a premature termination codon at position 95, which is predicted to lead to a truncated or absent protein. Complete loss of RDH5 function is an established disease mechanism for fundus albipunctatus (Driessen 2001, Schatz 2010, Sergouniotis 2011). In summary, this variant meets our criteria to be classified as pathogenic for fundus albipunctatus in an autosomal recessive manner based on the predicted impact to the protein. -

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Juno Genomics, Hangzhou Juno Genomics, Inc

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

PVS1+PM2_Supporting+PP4 -

not provided Pathogenic:2

Oct 30, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ClinVar contains an entry for this variant (Variation ID: 208608). For these reasons, this variant has been classified as Pathogenic. This premature translational stop signal has been observed in individual(s) with fundus albipunctatus (PMID: 22669287). This sequence change creates a premature translational stop signal (p.Trp95*) in the RDH5 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in RDH5 are known to be pathogenic (PMID: 11675386, 22815624). This variant is present in population databases (rs774122562, gnomAD 0.04%). -

Aug 08, 2025

GeneDx

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 25820994, 35148716, 31964843, 22669287, 28654958) -

Fundus albipunctatus, autosomal recessive Other:1

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GenomeConnect, ClinGen

Significance: not provided

Review Status: no classification provided

Collection Method: phenotyping only

Variant interpretted as pathogenic and reported on 12/30/2014 by GTR ID 21766. GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.46	D
BayesDel_noAF	Pathogenic	0.58
CADD	Pathogenic	41
DANN	Uncertain	1.0
Eigen	Pathogenic	0.92
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Pathogenic	0.98	D
PhyloP100		5.9
Vest4		0.89
GERP RS		5.2
Mutation Taster		=1/199	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.21		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.21		Position offset: -4

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

Other links and lift over

dbSNP: rs774122562; hg19: chr12-56115253;