1-94030564-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000350.3(ABCA4):c.4254-38G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00603 in 1,581,050 control chromosomes in the GnomAD database, including 462 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.031 ( 244 hom., cov: 32)

Exomes 𝑓: 0.0033 ( 218 hom. )

Consequence

ABCA4
NM_000350.3 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3O:1

Conservation

PhyloP100: -0.395

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

ABCA4-related retinopathy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
cone-rod dystrophy 3
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
severe early-childhood-onset retinal dystrophy
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), Ambry Genetics
retinitis pigmentosa 19
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
cone-rod dystrophy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
retinitis pigmentosa
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Stargardt disease
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ABCA4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BP6

Variant 1-94030564-C-T is Benign according to our data. Variant chr1-94030564-C-T is described in ClinVar as [Benign]. Clinvar id is 99269.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.106 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCA4	NM_000350.3 link	c.4254-38G>A		intron_variant	Intron 28 of 49	ENST00000370225.4	NP_000341.2	P78363Q6AI28
ABCA4	NM_001425324.1 link	c.4032-38G>A		intron_variant	Intron 27 of 48		NP_001412253.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCA4	ENST00000370225.4 link	c.4254-38G>A		intron_variant	Intron 28 of 49	1	NM_000350.3	ENSP00000359245.3		P78363

Frequencies

GnomAD3 genomes

AF:

0.0314

AC:

4769

AN:

152118

Hom.:

243

Cov.:

show subpopulations

Gnomad AFR

AF:

0.108

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0133

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00124

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0127

Gnomad NFE

AF:

0.000367

Gnomad OTH

AF:

0.0287

GnomAD2 exomes

AF:

0.00827

AC:

2074

AN:

250854

AF XY:

0.00608

show subpopulations

Gnomad AFR exome

AF:

0.111

Gnomad AMR exome

AF:

0.00504

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000608

Gnomad OTH exome

AF:

0.00359

GnomAD4 exome

AF:

0.00332

AC:

4739

AN:

1428814

Hom.:

218

Cov.:

AF XY:

0.00291

AC XY:

2072

AN XY:

712932

show subpopulations

African (AFR)

AF:

0.111

AC:

3657

AN:

32814

American (AMR)

AF:

0.00546

AC:

244

AN:

44654

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25910

East Asian (EAS)

AF:

0.0000759

AC:

AN:

39514

South Asian (SAS)

AF:

0.000467

AC:

AN:

85616

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53254

Middle Eastern (MID)

AF:

0.00578

AC:

AN:

5712

European-Non Finnish (NFE)

AF:

0.000294

AC:

318

AN:

1081986

Other (OTH)

AF:

0.00748

AC:

444

AN:

59354

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

250

500

751

1001

1251

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

118

236

354

472

590

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0315

AC:

4788

AN:

152236

Hom.:

244

Cov.:

AF XY:

0.0306

AC XY:

2280

AN XY:

74426

show subpopulations

African (AFR)

AF:

0.108

AC:

4491

AN:

41508

American (AMR)

AF:

0.0133

AC:

203

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00104

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.0136

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000367

AC:

AN:

68028

Other (OTH)

AF:

0.0284

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

208

416

623

831

1039

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

150

200

250

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0202

Hom.:

Bravo

AF:

0.0353

Asia WGS

AF:

0.0100

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:3Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2Other:1

Retina International

Significance:not provided

Review Status:no classification provided

Collection Method:literature only

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Mar 03, 2015

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance: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

3.2

(source)

DANN

Benign

0.48

PhyloP100

-0.40

Mutation Taster

=100/0

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over