rs1226284347
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Variant summary
Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7
The NM_000384.3(APOB):c.9975C>A(p.Thr3325=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000434 in 1,613,890 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 Likely benign (★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000041 ( 0 hom. )
Consequence
APOB
NM_000384.3 synonymous
NM_000384.3 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: -0.857
Genes affected
APOB (HGNC:603): (apolipoprotein B) This gene product is the main apolipoprotein of chylomicrons and low density lipoproteins (LDL), and is the ligand for the LDL receptor. It occurs in plasma as two main isoforms, apoB-48 and apoB-100: the former is synthesized exclusively in the gut and the latter in the liver. The intestinal and the hepatic forms of apoB are encoded by a single gene from a single, very long mRNA. The two isoforms share a common N-terminal sequence. The shorter apoB-48 protein is produced after RNA editing of the apoB-100 transcript at residue 2180 (CAA->UAA), resulting in the creation of a stop codon, and early translation termination. Mutations in this gene or its regulatory region cause hypobetalipoproteinemia, normotriglyceridemic hypobetalipoproteinemia, and hypercholesterolemia due to ligand-defective apoB, diseases affecting plasma cholesterol and apoB levels. [provided by RefSeq, Dec 2019]
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ACMG classification
Classification made for transcript
Verdict is Likely_benign. Variant got -5 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.92).
BP6
?
Variant 2-21006893-G-T is Benign according to our data. Variant chr2-21006893-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 544090.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
?
Synonymous conserved (PhyloP=-0.857 with no splicing effect.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
APOB | NM_000384.3 | c.9975C>A | p.Thr3325= | synonymous_variant | 26/29 | ENST00000233242.5 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
APOB | ENST00000233242.5 | c.9975C>A | p.Thr3325= | synonymous_variant | 26/29 | 1 | NM_000384.3 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00000657 AC: 1AN: 152118Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.0000120 AC: 3AN: 250924Hom.: 0 AF XY: 0.00000738 AC XY: 1AN XY: 135590
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GnomAD4 exome AF: 0.00000410 AC: 6AN: 1461772Hom.: 0 Cov.: 36 AF XY: 0.00000550 AC XY: 4AN XY: 727186
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GnomAD4 genome ? AF: 0.00000657 AC: 1AN: 152118Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 74318
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ClinVar
Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Hypercholesterolemia, autosomal dominant, type B;C4551990:Familial hypobetalipoproteinemia 1 Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Jun 28, 2023 | - - |
Computational scores
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
RBP_binding_hub_radar
RBP_regulation_power_radar
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