1-94008308-C-T

Variant names:

Variant summary

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

The NM_000350.3(ABCA4):c.5836-11G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.181 in 1,608,016 control chromosomes in the GnomAD database, including 27,424 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.20 ( 3134 hom., cov: 32)

Exomes 𝑓: 0.18 ( 24290 hom. )

Consequence

ABCA4
NM_000350.3 intron

Scores

Splicing: ADA: 0.00001273

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:18O:2

Conservation

PhyloP100: 0.0540

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 (BayesDel_noAF=-0.84).

BP6

Variant 1-94008308-C-T is Benign according to our data. Variant chr1-94008308-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 99408.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-94008308-C-T is described in Lovd as [Benign].

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.256 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCA4	NM_000350.3 link	c.5836-11G>A		intron_variant	Intron 41 of 49	ENST00000370225.4	NP_000341.2	P78363Q6AI28
ABCA4	NM_001425324.1 link	c.5614-11G>A		intron_variant	Intron 40 of 48		NP_001412253.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCA4	ENST00000370225.4 link	c.5836-11G>A		intron_variant	Intron 41 of 49	1	NM_000350.3	ENSP00000359245.3		P78363
ABCA4	ENST00000465352.1 link	n.252-11G>A		intron_variant	Intron 2 of 5	5

Frequencies

GnomAD3 genomes

AF:

0.199

AC:

30230

AN:

151742

Hom.:

3121

Cov.:

show subpopulations

Gnomad AFR

AF:

0.259

Gnomad AMI

AF:

0.137

Gnomad AMR

AF:

0.167

Gnomad ASJ

AF:

0.212

Gnomad EAS

AF:

0.129

Gnomad SAS

AF:

0.130

Gnomad FIN

AF:

0.172

Gnomad MID

AF:

0.155

Gnomad NFE

AF:

0.185

Gnomad OTH

AF:

0.184

GnomAD3 exomes

AF:

0.174

AC:

43794

AN:

251210

Hom.:

4029

AF XY:

0.172

AC XY:

23287

AN XY:

135770

show subpopulations

Gnomad AFR exome

AF:

0.261

Gnomad AMR exome

AF:

0.157

Gnomad ASJ exome

AF:

0.203

Gnomad EAS exome

AF:

0.127

Gnomad SAS exome

AF:

0.133

Gnomad FIN exome

AF:

0.174

Gnomad NFE exome

AF:

0.183

Gnomad OTH exome

AF:

0.176

GnomAD4 exome

AF:

0.179

AC:

260223

AN:

1456156

Hom.:

24290

Cov.:

AF XY:

0.177

AC XY:

128452

AN XY:

724644

show subpopulations

Gnomad4 AFR exome

AF:

0.270

Gnomad4 AMR exome

AF:

0.160

Gnomad4 ASJ exome

AF:

0.204

Gnomad4 EAS exome

AF:

0.136

Gnomad4 SAS exome

AF:

0.132

Gnomad4 FIN exome

AF:

0.176

Gnomad4 NFE exome

AF:

0.182

Gnomad4 OTH exome

AF:

0.176

GnomAD4 genome

AF:

0.199

AC:

30295

AN:

151860

Hom.:

3134

Cov.:

AF XY:

0.197

AC XY:

14591

AN XY:

74208

show subpopulations

Gnomad4 AFR

AF:

0.260

Gnomad4 AMR

AF:

0.167

Gnomad4 ASJ

AF:

0.212

Gnomad4 EAS

AF:

0.130

Gnomad4 SAS

AF:

0.130

Gnomad4 FIN

AF:

0.172

Gnomad4 NFE

AF:

0.185

Gnomad4 OTH

AF:

0.187

Alfa

AF:

0.197

Hom.:

1338

Bravo

AF:

0.202

Asia WGS

AF:

0.148

AC:

516

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:18Other:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:7

Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jun 04, 2020

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.5836-11G>A variant in ABCA4 is classified as benign because it has been identified in 25.8% (6425/24908) of African chromosomes by gnomAD (http://gnomad.broadinstitute.org). ACMG/AMP Criteria applied: BA1. -

Dec 01, 2017

Eurofins Ntd Llc (ga)

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Oct 10, 2012

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not provided

Benign:2Other:2

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Retina International

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

- -

GenomeConnect, ClinGen

Significance: not provided

Review Status: no classification provided

Collection Method: phenotyping only

GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Retinitis Pigmentosa, Recessive

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Stargardt Disease, Recessive

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Age related macular degeneration 2

Benign:1

Jul 14, 2021

Genome-Nilou Lab

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

ABCA4-related disorder

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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. -

Severe early-childhood-onset retinal dystrophy

Benign:1

Jul 14, 2021

Genome-Nilou Lab

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cone-Rod Dystrophy, Recessive

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Retinitis pigmentosa 19

Benign:1

Jul 14, 2021

Genome-Nilou Lab

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cone-rod dystrophy 3

Benign:1

Jul 14, 2021

Genome-Nilou Lab

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Macular degeneration

Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

DANN

Benign

0.54

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000013

dbscSNV1_RF

Benign

0.0

SpliceAI score (max)

0.010

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