rs672601326

Positions:

• chr6-42721913-T-TAGTA

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_000322.5(PRPH2):​c.421_422insTACT​(p.Tyr141LeufsTer37) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PRPH2 NM_000322.5 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:2
• Conservation: PhyloP100: 9.29

Genes affected

PRPH2 (HGNC:9942): (peripherin 2) The protein encoded by this gene is a member of the transmembrane 4 superfamily, also known as the tetraspanin family. Most of these members are cell-surface proteins that are characterized by the presence of four hydrophobic domains. The proteins mediate signal transduction events that play a role in the regulation of cell development, activation, growth and motility. This encoded protein is a cell surface glycoprotein found in the outer segment of both rod and cone photoreceptor cells. It may function as an adhesion molecule involved in stabilization and compaction of outer segment disks or in the maintenance of the curvature of the rim. This protein is essential for disk morphogenesis. Defects in this gene are associated with both central and peripheral retinal degenerations. Some of the various phenotypically different disorders are autosomal dominant retinitis pigmentosa, progressive macular degeneration, macular dystrophy and retinitis pigmentosa digenic. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Pathogenic. Variant got 11 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 6-42721913-T-TAGTA is Pathogenic according to our data. Variant chr6-42721913-T-TAGTA is described in ClinVar as [Pathogenic]. Clinvar id is 13174.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PRPH2	NM_000322.5	c.421_422insTACT	p.Tyr141LeufsTer37	frameshift_variant	1/3	ENST00000230381.7
PRPH2	XR_007059288.1	n.684_685insTACT		non_coding_transcript_exon_variant	1/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRPH2	ENST00000230381.7	c.421_422insTACT	p.Tyr141LeufsTer37	frameshift_variant	1/3	1	NM_000322.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: no assertion criteria provided

Submissions by phenotype

Patterned macular dystrophy 1 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Apr 01, 1995

- -

not provided Pathogenic:1

Pathogenic, no assertion criteria provided

curation

Leiden Open Variation Database

Apr 06, 2021

Curator: Global Variome, with Curator vacancy. Submitter to LOVD: Manon Peeters. -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs672601326; hg19: chr6-42689651;