rs61750129

chr1-94032007-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000350.3(ABCA4):c.3899G>A(p.Arg1300Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00381 in 1,613,304 control chromosomes in the GnomAD database, including 183 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1300L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.019 ( 105 hom., cov: 32)

Exomes 𝑓: 0.0022 ( 78 hom. )

Consequence

ABCA4
NM_000350.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:11O:1

Conservation

PhyloP100: 0.0150

Variant links:

Genes affected

ABCA4 (HGNC:34): (ATP binding cassette subfamily A member 4) The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intracellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the ABC1 subfamily. Members of the ABC1 subfamily comprise the only major ABC subfamily found exclusively in multicellular eukaryotes. This protein is a retina-specific ABC transporter with N-retinylidene-PE as a substrate. It is expressed exclusively in retina photoreceptor cells, and the gene product mediates transport of an essental molecule, all-trans-retinal aldehyde (atRAL), across the photoreceptor cell membrane. Mutations in this gene are found in patients diagnosed with Stargardt disease, a form of juvenile-onset macular degeneration. Mutations in this gene are also associated with retinitis pigmentosa-19, cone-rod dystrophy type 3, early-onset severe retinal dystrophy, fundus flavimaculatus, and macular degeneration age-related 2. [provided by RefSeq, Sep 2019]

ABCA4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0024959445).

BP6

Variant 1-94032007-C-T is Benign according to our data. Variant chr1-94032007-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 99246.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-94032007-C-T is described in Lovd as [Likely_benign]. Variant chr1-94032007-C-T is described in Lovd as [Likely_pathogenic]. Variant chr1-94032007-C-T is described in Lovd as [Benign]. Variant chr1-94032007-C-T is described in Lovd as [Likely_pathogenic].

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0644 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ABCA4	NM_000350.3 linkuse as main transcript	c.3899G>A	p.Arg1300Gln	missense_variant	27/50	ENST00000370225.4
ABCA4	XM_047416704.1 linkuse as main transcript	c.3677G>A	p.Arg1226Gln	missense_variant	26/49

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ABCA4	ENST00000370225.4 linkuse as main transcript	c.3899G>A	p.Arg1300Gln	missense_variant	27/50	1	NM_000350.3	P1

Frequencies

GnomAD3 genomes

AF:

0.0194

AC:

2948

AN:

151986

Hom.:

105

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0665

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00806

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000832

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0127

Gnomad NFE

AF:

0.000456

Gnomad OTH

AF:

0.0177

GnomAD3 exomes

AF:

0.00514

AC:

1278

AN:

248808

Hom.:

AF XY:

0.00392

AC XY:

528

AN XY:

134854

show subpopulations

Gnomad AFR exome

AF:

0.0675

Gnomad AMR exome

AF:

0.00327

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000294

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000668

Gnomad OTH exome

AF:

0.00213

GnomAD4 exome

AF:

0.00218

AC:

3191

AN:

1461200

Hom.:

Cov.:

AF XY:

0.00194

AC XY:

1413

AN XY:

726916

show subpopulations

Gnomad4 AFR exome

AF:

0.0683

Gnomad4 AMR exome

AF:

0.00360

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000336

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000334

Gnomad4 OTH exome

AF:

0.00520

GnomAD4 genome

AF:

0.0194

AC:

2956

AN:

152104

Hom.:

105

Cov.:

AF XY:

0.0184

AC XY:

1369

AN XY:

74412

show subpopulations

Gnomad4 AFR

AF:

0.0665

Gnomad4 AMR

AF:

0.00805

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000833

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000456

Gnomad4 OTH

AF:

0.0175

Alfa

AF:

0.00213

Hom.:

Bravo

AF:

0.0221

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.0617

AC:

272

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.00636

AC:

772

Asia WGS

AF:

0.00491

AC:

AN:

3478

EpiCase

AF:

0.000436

EpiControl

AF:

0.00101

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:11Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3Other:1

Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 22, 2023	- -
Benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	May 30, 2017	- -
not provided, no classification provided	literature only	Retina International	-	- -
Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 31, 2024	- -

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 18, 2015	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, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jun 11, 2015	- -

Retinitis Pigmentosa, Recessive

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Stargardt Disease, Recessive

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

ABCA4-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Macular dystrophy

Benign:1

Likely benign, no assertion criteria provided

research

NIHR Bioresource Rare Diseases, University of Cambridge

Jan 01, 2015

- -

Cone-Rod Dystrophy, Recessive

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Macular degeneration

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.36

Cadd

Benign

6.3

Dann

Benign

0.88

DEOGEN2

Benign

0.17

T;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.091

LIST_S2

Benign

0.70

T;T

MetaRNN

Benign

0.0025

T;T

MetaSVM

Benign

-0.89

MutationTaster

Benign

1.0

PrimateAI

Benign

0.19

Sift4G

Benign

0.65

T;T

Polyphen

0.14

.;B

Vest4

0.18

MVP

0.69

MPC

0.097

ClinPred

0.0015

GERP RS

3.0

Varity_R

0.048

gMVP

0.24

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