rs786205445
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong
The NM_000350.3(ABCA4):c.5391_5392del(p.Ala1798Ter) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. C1797C) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 32)
Consequence
ABCA4
NM_000350.3 frameshift
NM_000350.3 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 2.73
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]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 16 ACMG points.
PVS1
?
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PP5
?
Variant 1-94014610-GCA-G is Pathogenic according to our data. Variant chr1-94014610-GCA-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 190983.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-94014610-GCA-G is described in Lovd as [Likely_pathogenic]. Variant chr1-94014610-GCA-G is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ABCA4 | NM_000350.3 | c.5391_5392del | p.Ala1798Ter | frameshift_variant | 38/50 | ENST00000370225.4 | |
ABCA4 | XM_047416704.1 | c.5169_5170del | p.Ala1724Ter | frameshift_variant | 37/49 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ABCA4 | ENST00000370225.4 | c.5391_5392del | p.Ala1798Ter | frameshift_variant | 38/50 | 1 | NM_000350.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Severe early-childhood-onset retinal dystrophy Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center | Mar 29, 2024 | - - |
Autosomal recessive retinitis pigmentosa Pathogenic:1
Pathogenic, no assertion criteria provided | literature only | Faculty of Health Sciences, Beirut Arab University | Sep 10, 2015 | - - |
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitter | research | Department Of Translational Genomics (developmental Genetics Section), King Faisal Specialist Hospital & Research Centre | - | - - |
Computational scores
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Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at