rs200585050

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001164688.2(RD3):c.259A>G(p.Lys87Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000522 in 1,614,128 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00054 ( 1 hom. )

Consequence

RD3
NM_001164688.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: 7.28

Variant links:

Genes affected

RD3 (HGNC:19689): (RD3 regulator of GUCY2D) This gene encodes a retinal protein that is associated with promyelocytic leukemia-gene product (PML) bodies in the nucleus. Mutations in this gene cause Leber congenital amaurosis type 12, a disease that results in retinal degeneration. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

RD3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.769

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RD3	NM_001164688.2 linkuse as main transcript	c.259A>G	p.Lys87Glu	missense_variant	2/3	ENST00000680073.1
RD3	NM_183059.3 linkuse as main transcript	c.259A>G	p.Lys87Glu	missense_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
RD3	ENST00000680073.1 linkuse as main transcript	c.259A>G	p.Lys87Glu	missense_variant	2/3		NM_001164688.2	P1
RD3	ENST00000367002.5 linkuse as main transcript	c.259A>G	p.Lys87Glu	missense_variant	2/3	1		P1
RD3	ENST00000484910.1 linkuse as main transcript	n.265-1830A>G		intron_variant, non_coding_transcript_variant		1

Frequencies

GnomAD3 genomes

AF:

0.000394

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000282

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000779

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000307

AC:

AN:

250892

Hom.:

AF XY:

0.000287

AC XY:

AN XY:

135674

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000173

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.000416

Gnomad NFE exome

AF:

0.000530

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000536

AC:

783

AN:

1461886

Hom.:

Cov.:

AF XY:

0.000524

AC XY:

381

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000119

Gnomad4 AMR exome

AF:

0.000179

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.000393

Gnomad4 NFE exome

AF:

0.000644

Gnomad4 OTH exome

AF:

0.000480

GnomAD4 genome

AF:

0.000394

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.000363

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000282

Gnomad4 NFE

AF:

0.000779

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000469

Hom.:

Bravo

AF:

0.000355

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.000329

AC:

EpiCase

AF:

0.000436

EpiControl

AF:

0.000711

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Leber congenital amaurosis 12

Uncertain:2

Uncertain significance, 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Oct 25, 2022	This sequence change replaces lysine, which is basic and polar, with glutamic acid, which is acidic and polar, at codon 87 of the RD3 protein (p.Lys87Glu). This variant is present in population databases (rs200585050, gnomAD 0.06%), including at least one homozygous and/or hemizygous individual. This missense change has been observed in individual(s) with inherited retinal dystrophy (PMID: 24516651). ClinVar contains an entry for this variant (Variation ID: 295257). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Mar 25, 2024

Variant summary: RD3 c.259A>G (p.Lys87Glu) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00031 in 250892 control chromosomes, predominantly at a frequency of 0.00053 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 1.06 fold of the estimated maximal expected allele frequency for a pathogenic variant in RD3 causing Leber Congenital Amaurosis phenotype (0.0005), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Non-Finnish European origin. c.259A>G has been reported in the literature in multiple individuals affected with Leber Congenital Amaurosis. These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. ClinVar contains an entry for this variant (Variation ID: 295257). Based on the evidence outlined above, the variant was classified as uncertain significance. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Apr 26, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.16

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.22

Eigen

Uncertain

0.64

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.83

M_CAP

Benign

0.069

MetaRNN

Pathogenic

0.77

MetaSVM

Benign

-0.89

MutationAssessor

Uncertain

2.6

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-2.3

REVEL

Pathogenic

0.73

Sift

Uncertain

0.0060

Sift4G

Uncertain

0.014

Polyphen

1.0

Vest4

0.89

MVP

0.19

MPC

1.1

ClinPred

0.35

GERP RS

4.9

Varity_R

0.48

gMVP

0.74

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