rs374156343

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PP3PP5

The NM_000283.4(PDE6B):c.811G>A(p.Glu271Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000316 in 1,613,906 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000028 ( 0 hom. )

Consequence

PDE6B
NM_000283.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:2

Conservation

PhyloP100: 7.74

Variant links:

Genes affected

PDE6B (HGNC:8786): (phosphodiesterase 6B) Photon absorption triggers a signaling cascade in rod photoreceptors that activates cGMP phosphodiesterase (PDE), resulting in the rapid hydrolysis of cGMP, closure of cGMP-gated cation channels, and hyperpolarization of the cell. PDE is a peripheral membrane heterotrimeric enzyme made up of alpha, beta, and gamma subunits. This gene encodes the beta subunit. Mutations in this gene result in retinitis pigmentosa and autosomal dominant congenital stationary night blindness. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2009]

PDE6B links:

PDE6B-AS1 (HGNC:40438): (PDE6B antisense RNA 1)

PDE6B-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM1

In a domain GAF 2 (size 177) in uniprot entity PDE6B_HUMAN there are 19 pathogenic changes around while only 1 benign (95%) in NM_000283.4

PP3

MetaRNN computational evidence supports a deleterious effect, 0.793

PP5

Variant 4-653951-G-A is Pathogenic according to our data. Variant chr4-653951-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 497466.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=2, Pathogenic=1}. Variant chr4-653951-G-A is described in Lovd as [Pathogenic]. Variant chr4-653951-G-A is described in Lovd as [Pathogenic]. Variant chr4-653951-G-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PDE6B	NM_000283.4 linkuse as main transcript	c.811G>A	p.Glu271Lys	missense_variant	4/22	ENST00000496514.6	NP_000274.3
PDE6B-AS1	NR_183810.1 linkuse as main transcript	n.140C>T		non_coding_transcript_exon_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PDE6B	ENST00000496514.6 linkuse as main transcript	c.811G>A	p.Glu271Lys	missense_variant	4/22	1	NM_000283.4	ENSP00000420295	P3	P35913-1
PDE6B-AS1	ENST00000468356.3 linkuse as main transcript	n.1302C>T		non_coding_transcript_exon_variant	3/4	1

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000558

AC:

AN:

251076

Hom.:

AF XY:

0.0000294

AC XY:

AN XY:

135854

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.0000281

AC:

AN:

1461552

Hom.:

Cov.:

AF XY:

0.0000261

AC XY:

AN XY:

727090

show subpopulations

Gnomad4 AFR exome

AF:

0.000239

Gnomad4 AMR exome

AF:

0.000246

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000171

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000656

AC:

AN:

152354

Hom.:

Cov.:

AF XY:

0.0000805

AC XY:

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.000168

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000966

Hom.:

Bravo

AF:

0.0000378

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000576

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:3Uncertain:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Pathogenic:1Uncertain:1

Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Nov 22, 2022	This variant is present in population databases (rs374156343, gnomAD 0.03%). For these reasons, this variant has been classified as Pathogenic. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on PDE6B protein function. ClinVar contains an entry for this variant (Variation ID: 497466). This missense change has been observed in individual(s) with retinitis pigmentosa (PMID: 27353947, 30646425; Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 271 of the PDE6B protein (p.Glu271Lys). -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Oct 06, 2016	- -

Retinal dystrophy

Pathogenic:1Uncertain:1

Likely pathogenic, criteria provided, single submitter	clinical testing	Blueprint Genetics	Mar 07, 2019	- -
Uncertain significance, criteria provided, single submitter	research	Dept Of Ophthalmology, Nagoya University	Oct 01, 2023	- -

PDE6B-related disorder

Pathogenic:1

Likely pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 14, 2024

The PDE6B c.811G>A variant is predicted to result in the amino acid substitution p.Glu271Lys. This variant has been reported in the homozygous and compound heterozygous states in individuals with retinal disease (Tiwari et al. 2016. PubMed ID: 27353947; Koyanagi et al. 2019. PubMed ID: 31213501; Palmowski-Wolfe et al. 2019. PubMed ID: 30646425; Karali et al. 2022. PubMed ID: 36460718). This variant is reported in 0.023% of alleles in individuals of Latino descent in gnomAD. Given the evidence, we interpret this variant as likely pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.54

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.15

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.71

.;D

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

D;D

M_CAP

Benign

0.055

MetaRNN

Pathogenic

0.79

D;D

MetaSVM

Uncertain

-0.047

MutationAssessor

Uncertain

2.7

M;M

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.64

PROVEAN

Uncertain

-3.2

D;D

REVEL

Uncertain

0.46

Sift

Uncertain

0.0040

D;D

Sift4G

Uncertain

0.0080

D;D

Polyphen

0.93

P;P

Vest4

0.84

MVP

0.86

MPC

0.20

ClinPred

0.34

GERP RS

5.3

Varity_R

0.39

gMVP

0.51

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