rs886044757
Positions:
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP7
The NM_000350.3(ABCA4):āc.5973G>Cā(p.Val1991=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,818 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā ).
Frequency
Genomes: not found (cov: 32)
Exomes š: 0.0000027 ( 0 hom. )
Consequence
ABCA4
NM_000350.3 synonymous
NM_000350.3 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 0.501
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 Likely_benign. Variant got -1 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.41).
BP7
?
Synonymous conserved (PhyloP=0.501 with no splicing effect.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ABCA4 | NM_000350.3 | c.5973G>C | p.Val1991= | synonymous_variant | 43/50 | ENST00000370225.4 | |
ABCA4 | XM_047416704.1 | c.5751G>C | p.Val1917= | synonymous_variant | 42/49 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ABCA4 | ENST00000370225.4 | c.5973G>C | p.Val1991= | synonymous_variant | 43/50 | 1 | NM_000350.3 | P1 | |
ABCA4 | ENST00000465352.1 | n.389G>C | non_coding_transcript_exon_variant | 4/6 | 5 | ||||
ABCA4 | ENST00000484388.1 | n.87G>C | non_coding_transcript_exon_variant | 1/2 | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
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32
GnomAD3 exomes AF: 0.00000798 AC: 2AN: 250764Hom.: 0 AF XY: 0.00000737 AC XY: 1AN XY: 135602
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GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461818Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2AN XY: 727196
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GnomAD4 genome ? Cov.: 32
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Severe early-childhood-onset retinal dystrophy Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Institute of Human Genetics, Univ. Regensburg, Univ. Regensburg | Jan 01, 2016 | - - |
Computational scores
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Name
Calibrated prediction
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
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