11-119085172-CTTTTTTTTTTTTTTTTTTTTTT-CTTTT
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_000190.4(HMBS):c.33+118_33+135delTTTTTTTTTTTTTTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000109 in 732,808 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.
Frequency
Genomes: not found (cov: 0)
Exomes 𝑓: 0.000011 ( 0 hom. )
Consequence
HMBS
NM_000190.4 intron
NM_000190.4 intron
Scores
Not classified
Clinical Significance
Not reported in ClinVar
Conservation
PhyloP100: 1.83
Genes affected
HMBS (HGNC:4982): (hydroxymethylbilane synthase) This gene encodes a member of the hydroxymethylbilane synthase superfamily. The encoded protein is the third enzyme of the heme biosynthetic pathway and catalyzes the head to tail condensation of four porphobilinogen molecules into the linear hydroxymethylbilane. Mutations in this gene are associated with the autosomal dominant disease acute intermittent porphyria. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes Cov.: 0
GnomAD3 genomes
Cov.:
0
GnomAD4 exome AF: 0.0000109 AC: 8AN: 732808Hom.: 0 AF XY: 0.0000138 AC XY: 5AN XY: 362462
GnomAD4 exome
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AC:
8
AN:
732808
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AC XY:
5
AN XY:
362462
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GnomAD4 genome Cov.: 0
GnomAD4 genome
Cov.:
0
ClinVar
Not reported inComputational scores
Source:
Name
Calibrated prediction
Score
Prediction
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at