rs62638194

Positions:

• chr12-55724429-T-C
• chr12-55724429-T-G

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1 PM2 PP3_Strong PP5

The ENST00000257895.10(RDH5):​c.841T>C​(p.Tyr281His) 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. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RDH5 ENST00000257895.10 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.96

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]

BLOC1S1-RDH5 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

• PM1: In a topological_domain Lumenal (size 266) in uniprot entity RDH5_HUMAN there are 72 pathogenic changes around while only 11 benign (87%) in ENST00000257895.10
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.943
• PP5: Variant 12-55724429-T-C is Pathogenic according to our data. Variant chr12-55724429-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 8008.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr12-55724429-T-C is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RDH5	NM_002905.5	c.841T>C	p.Tyr281His	missense_variant	5/5	ENST00000257895.10	NP_002896.2
BLOC1S1-RDH5	NR_037658.1	n.900T>C		non_coding_transcript_exon_variant	6/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RDH5	ENST00000257895.10	c.841T>C	p.Tyr281His	missense_variant	5/5	1	NM_002905.5	ENSP00000257895	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Fundus albipunctatus, autosomal recessive Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Feb 01, 2002

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.51	D
BayesDel_noAF	Pathogenic	0.50
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.16	T;D;D
Eigen	Pathogenic	0.93
Eigen_PC	Pathogenic	0.83
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.96	D;.;D
M_CAP	Pathogenic	0.54	D
MetaRNN	Pathogenic	0.94	D;D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	4.2	.;H;H
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.80	T
PROVEAN	Pathogenic	-4.7	D;D;D
REVEL	Pathogenic	0.95
Sift	Pathogenic	0.0	D;D;D
Sift4G	Pathogenic	0.0	D;D;D
Polyphen		1.0	.;D;D
Vest4		0.89
MutPred		0.78		.;Gain of disorder (P = 0.0188);Gain of disorder (P = 0.0188);
MVP		0.98
MPC		0.68
ClinPred		1.0	D
GERP RS		4.9
Varity_R		0.84
gMVP		0.90

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: rs62638194; hg19: chr12-56118213;