rs61748436

Positions:

chr19-47836264-G-A

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PM1PM2PM5PP3_StrongPP5_Very_Strong

The NM_000554.6(CRX):c.122G>A(p.Arg41Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000805 in 1,614,018 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 Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R41P) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

CRX
NM_000554.6 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:7O:1

Conservation

PhyloP100: 9.23

Variant links:

Genes affected

CRX (HGNC:2383): (cone-rod homeobox) The protein encoded by this gene is a photoreceptor-specific transcription factor which plays a role in the differentiation of photoreceptor cells. This homeodomain protein is necessary for the maintenance of normal cone and rod function. Mutations in this gene are associated with photoreceptor degeneration, Leber congenital amaurosis type III and the autosomal dominant cone-rod dystrophy 2. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some variants has not been determined. [provided by RefSeq, Jul 2008]

CRX links:

CRX (HGNC:):

CRX links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PM1

In a DNA_binding_region Homeobox (size 59) in uniprot entity CRX_HUMAN there are 29 pathogenic changes around while only 2 benign (94%) in NM_000554.6

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr19-47836264-G-C is described in Lovd as [Likely_pathogenic].

PP3

MetaRNN computational evidence supports a deleterious effect, 0.985

PP5

Variant 19-47836264-G-A is Pathogenic according to our data. Variant chr19-47836264-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 7421.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-47836264-G-A is described in Lovd as [Pathogenic]. Variant chr19-47836264-G-A is described in Lovd as [Likely_pathogenic]. Variant chr19-47836264-G-A is described in Lovd as [Pathogenic]. Variant chr19-47836264-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CRX	NM_000554.6 linkuse as main transcript	c.122G>A	p.Arg41Gln	missense_variant	3/4	ENST00000221996.12	NP_000545.1	O43186

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
CRX	ENST00000221996.12 linkuse as main transcript	c.122G>A	p.Arg41Gln	missense_variant	3/4	2	NM_000554.6	ENSP00000221996.5	O43186
CRX	ENST00000556527.1 linkuse as main transcript	n.99G>A		non_coding_transcript_exon_variant	2/2	1
CRX	ENST00000566686.5 linkuse as main transcript	c.122G>A	p.Arg41Gln	missense_variant	3/3	5		ENSP00000457808.2	H3BUU7
CRX	ENST00000613299.1 linkuse as main transcript	c.100+1721G>A		intron_variant		3		ENSP00000478106.1	A0A087WTS9

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152134

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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

GnomAD4 exome

AF:

0.00000752

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.00000989

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152134

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74328

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

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:

0.0000648

Hom.:

Bravo

AF:

0.00000756

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:7Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Pathogenic:2Other:1

Likely pathogenic, criteria provided, single submitter	clinical testing	Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen	Oct 23, 2020	- -
not provided, no classification provided	literature only	Retina International	-	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2017	- -

Retinal dystrophy

Pathogenic:2

Likely pathogenic, criteria provided, single submitter	clinical testing	Blueprint Genetics	Oct 11, 2018	- -
Pathogenic, criteria provided, single submitter	clinical testing	Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg	Jan 01, 2022	- -

Cone-rod dystrophy 2

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Nov 01, 1998

- -

Leber congenital amaurosis 7;C3489532:Cone-rod dystrophy 2

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 06, 2023

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 41 of the CRX protein (p.Arg41Gln). This variant is present in population databases (rs61748436, gnomAD 0.007%). This missense change has been observed in individuals with autosomal dominant and autosomal recessive retinal disease (PMID: 9427255, 11748859, 24265693, 29068479, 30543658, 31215831; Invitae). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 7421). 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) performed at Invitae indicates that this missense variant is expected to disrupt CRX protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects CRX function (PMID: 11971869). For these reasons, this variant has been classified as Pathogenic. -

CRX-related disorder

Pathogenic:1

Pathogenic, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 17, 2024

The CRX c.122G>A variant is predicted to result in the amino acid substitution p.Arg41Gln. This variant has been reported in multiple individuals with CRX-related retinal disease (for examples, see Swain et al. 1997. PubMed ID: 9427255; Blanco-Kelly et al. 2012. PubMed ID: 22736939, Eisenberger et al. 2013. PubMed ID: 24265693). This variant is located in the DNA-binding domain of the CRX protein and is predicted to reduce DNA-binding activity (Swain et al. 1997. PubMed ID: 9427255). Variants impacting the same amino acid have been shown to be pathogenic for CRC-related retinal disease (p.Arg41Trp; Swain et al. 1997). PubMed ID: 9427255This variant is reported in 0.0065% of alleles in individuals of European (Non-Finnish) descent in gnomAD. This variant is interpreted as pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.55

BayesDel_noAF

Pathogenic

0.55

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.93

.;D;D

Eigen

Uncertain

0.64

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.89

D;.;T

M_CAP

Pathogenic

0.59

MetaRNN

Pathogenic

0.98

D;D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.4

.;M;M

PrimateAI

Pathogenic

0.94

PROVEAN

Uncertain

-3.7

D;D;D

REVEL

Pathogenic

0.93

Sift

Benign

0.075

T;D;D

Sift4G

Benign

0.065

T;T;T

Polyphen

1.0

.;D;D

Vest4

0.86, 0.84

MutPred

0.93

Loss of MoRF binding (P = 0.0191);Loss of MoRF binding (P = 0.0191);Loss of MoRF binding (P = 0.0191);

MVP

0.99

MPC

0.72

ClinPred

1.0

GERP RS

3.7

Varity_R

0.83

gMVP

0.83

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