rs8177804
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Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1
The ENST00000409155.8(ALAD):c.262-176G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.141 in 152,240 control chromosomes in the GnomAD database, including 1,628 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).
Frequency
Genomes: 𝑓 0.14 ( 1628 hom., cov: 33)
Consequence
ALAD
ENST00000409155.8 intron
ENST00000409155.8 intron
Scores
2
Clinical Significance
Conservation
PhyloP100: -0.943
Genes affected
ALAD (HGNC:395): (aminolevulinate dehydratase) The ALAD enzyme is composed of 8 identical subunits and catalyzes the condensation of 2 molecules of delta-aminolevulinate to form porphobilinogen (a precursor of heme, cytochromes and other hemoproteins). ALAD catalyzes the second step in the porphyrin and heme biosynthetic pathway; zinc is essential for enzymatic activity. ALAD enzymatic activity is inhibited by lead and a defect in the ALAD structural gene can cause increased sensitivity to lead poisoning and acute hepatic porphyria. Alternative splicing of this gene results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2015]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -20 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.93).
BP6
Variant 9-113391109-C-T is Benign according to our data. Variant chr9-113391109-C-T is described in ClinVar as [Benign]. Clinvar id is 1238193.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BA1
GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.211 is higher than 0.05.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
ALAD | NM_000031.6 | c.262-176G>A | intron_variant | ENST00000409155.8 | NP_000022.3 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
ALAD | ENST00000409155.8 | c.262-176G>A | intron_variant | 1 | NM_000031.6 | ENSP00000386284 | P1 |
Frequencies
GnomAD3 genomes AF: 0.141 AC: 21486AN: 152122Hom.: 1628 Cov.: 33
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We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome AF: 0.141 AC: 21491AN: 152240Hom.: 1628 Cov.: 33 AF XY: 0.141 AC XY: 10482AN XY: 74414
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ClinVar
Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not provided Benign:2
Benign, criteria provided, single submitter | not provided | Breakthrough Genomics, Breakthrough Genomics | - | - - |
Benign, criteria provided, single submitter | clinical testing | GeneDx | Jun 18, 2021 | - - |
Computational scores
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Name
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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