chr6-42722017-A-G

Position:

chr6-42722017-A-G

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_000322.5(PRPH2):c.318T>C(p.Val106=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.576 in 1,613,784 control chromosomes in the GnomAD database, including 269,137 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.60 ( 27013 hom., cov: 31)

Exomes 𝑓: 0.57 ( 242124 hom. )

Consequence

PRPH2
NM_000322.5 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:20

Conservation

PhyloP100: 1.04

Variant links:

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]

PRPH2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.94).

BP6

Variant 6-42722017-A-G is Benign according to our data. Variant chr6-42722017-A-G is described in ClinVar as [Benign]. Clinvar id is 92846.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-42722017-A-G is described in Lovd as [Benign]. Variant chr6-42722017-A-G is described in Lovd as [Likely_benign].

BP7

Synonymous conserved (PhyloP=1.04 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.649 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PRPH2	NM_000322.5 linkuse as main transcript	c.318T>C	p.Val106=	synonymous_variant	1/3	ENST00000230381.7	NP_000313.2
PRPH2	XR_007059288.1 linkuse as main transcript	n.581T>C		non_coding_transcript_exon_variant	1/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PRPH2	ENST00000230381.7 linkuse as main transcript	c.318T>C	p.Val106=	synonymous_variant	1/3	1	NM_000322.5	ENSP00000230381	P1

Frequencies

GnomAD3 genomes

AF:

0.595

AC:

90337

AN:

151804

Hom.:

26977

Cov.:

show subpopulations

Gnomad AFR

AF:

0.656

Gnomad AMI

AF:

0.734

Gnomad AMR

AF:

0.594

Gnomad ASJ

AF:

0.531

Gnomad EAS

AF:

0.577

Gnomad SAS

AF:

0.518

Gnomad FIN

AF:

0.553

Gnomad MID

AF:

0.627

Gnomad NFE

AF:

0.573

Gnomad OTH

AF:

0.595

GnomAD3 exomes

AF:

0.578

AC:

145040

AN:

251124

Hom.:

42239

AF XY:

0.574

AC XY:

77893

AN XY:

135754

show subpopulations

Gnomad AFR exome

AF:

0.655

Gnomad AMR exome

AF:

0.603

Gnomad ASJ exome

AF:

0.521

Gnomad EAS exome

AF:

0.590

Gnomad SAS exome

AF:

0.532

Gnomad FIN exome

AF:

0.560

Gnomad NFE exome

AF:

0.577

Gnomad OTH exome

AF:

0.579

GnomAD4 exome

AF:

0.574

AC:

839587

AN:

1461860

Hom.:

242124

Cov.:

AF XY:

0.573

AC XY:

416708

AN XY:

727228

show subpopulations

Gnomad4 AFR exome

AF:

0.659

Gnomad4 AMR exome

AF:

0.602

Gnomad4 ASJ exome

AF:

0.521

Gnomad4 EAS exome

AF:

0.528

Gnomad4 SAS exome

AF:

0.537

Gnomad4 FIN exome

AF:

0.562

Gnomad4 NFE exome

AF:

0.577

Gnomad4 OTH exome

AF:

0.577

GnomAD4 genome

AF:

0.595

AC:

90426

AN:

151924

Hom.:

27013

Cov.:

AF XY:

0.592

AC XY:

43936

AN XY:

74256

show subpopulations

Gnomad4 AFR

AF:

0.656

Gnomad4 AMR

AF:

0.593

Gnomad4 ASJ

AF:

0.531

Gnomad4 EAS

AF:

0.577

Gnomad4 SAS

AF:

0.519

Gnomad4 FIN

AF:

0.553

Gnomad4 NFE

AF:

0.573

Gnomad4 OTH

AF:

0.598

Alfa

AF:

0.579

Hom.:

18453

Bravo

AF:

0.607

Asia WGS

AF:

0.557

AC:

1942

AN:

3478

EpiCase

AF:

0.579

EpiControl

AF:

0.580

ClinVar

Significance: Benign

Submissions summary: Benign:20

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:7

Likely benign, no assertion criteria provided	curation	Leiden Open Variation Database	Mar 21, 2021	Curator: Global Variome, with Curator vacancy. Submitter to LOVD: Julia Lopez. -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Aug 20, 2013	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 28, 2011	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, no assertion criteria provided	clinical testing	Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	-	- -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -

Pigmentary retinal dystrophy

Benign:2

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Oct 25, 2021	- -

Patterned macular dystrophy 1

Benign:2

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Oct 25, 2021	- -

Choroidal dystrophy, central areolar 2

Benign:2

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Oct 25, 2021	- -

Vitelliform macular dystrophy 3

Benign:1

Benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Oct 25, 2021

- -

Retinitis pigmentosa 7

Benign:1

Benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Oct 25, 2021

- -

Cone-rod dystrophy

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

PRPH2-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Adult-onset foveomacular vitelliform dystrophy

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

Retinal dystrophy

Benign:1

Benign, criteria provided, single submitter

research

Dept Of Ophthalmology, Nagoya University

Oct 01, 2023

- -

Retinitis pigmentosa

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.94

CADD

Benign

2.5

DANN

Benign

0.44

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

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