chr12-55721211-C-G

Variant names:

• chr12-55721211-C-G
• rs2136138716
• NM_002905.5:c.27C>G

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_002905.5(RDH5):​c.27C>G​(p.Ala9Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RDH5 NM_002905.5 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.676
• Publications: 0 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):

• RDH5-related retinopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• fundus albipunctatus

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

ENSG00000258311 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.57).
• BP6: Variant 12-55721211-C-G is Benign according to our data. Variant chr12-55721211-C-G is described in ClinVar as Likely_benign. ClinVar VariationId is 1554120.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.676 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002905.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RDH5	NM_002905.5	MANE Select	c.27C>G	p.Ala9Ala	synonymous	Exon 2 of 5	NP_002896.2	Q92781
	RDH5	NM_001199771.3		c.27C>G	p.Ala9Ala	synonymous	Exon 2 of 5	NP_001186700.1	Q92781
	BLOC1S1-RDH5	NR_037658.1		n.370-478C>G		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RDH5	ENST00000257895.10	TSL:1 MANE Select	c.27C>G	p.Ala9Ala	synonymous	Exon 2 of 5	ENSP00000257895.6	Q92781
	RDH5	ENST00000548082.1	TSL:1	c.27C>G	p.Ala9Ala	synonymous	Exon 2 of 5	ENSP00000447128.1	Q92781
	ENSG00000258311	ENST00000550412.5	TSL:2	c.352-478C>G		intron	N/A	ENSP00000447650.1	F8W036

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.57
CADD	Benign	16
DANN	Benign	0.53
PhyloP100		0.68

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs2136138716; hg19: chr12-56114995;