rs767587977
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_StrongPM2PP5_Moderate
The NM_000384.3(APOB):c.12460G>T(p.Glu4154Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000206 in 1,454,484 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )
Consequence
APOB
NM_000384.3 stop_gained
NM_000384.3 stop_gained
Scores
2
4
1
Clinical Significance
Conservation
PhyloP100: 1.01
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_pathogenic. Variant got 8 ACMG points.
PVS1
?
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 16 pathogenic variants in the truncated region.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 2-21002962-C-A is Pathogenic according to our data. Variant chr2-21002962-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 3032553.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
APOB | NM_000384.3 | c.12460G>T | p.Glu4154Ter | stop_gained | 29/29 | ENST00000233242.5 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
APOB | ENST00000233242.5 | c.12460G>T | p.Glu4154Ter | stop_gained | 29/29 | 1 | NM_000384.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
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32
GnomAD3 exomes AF: 0.00000815 AC: 2AN: 245330Hom.: 0 AF XY: 0.00000756 AC XY: 1AN XY: 132324
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GnomAD4 exome AF: 0.00000206 AC: 3AN: 1454484Hom.: 0 Cov.: 35 AF XY: 0.00000415 AC XY: 3AN XY: 722646
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GnomAD4 genome ? Cov.: 32
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32
ExAC
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ClinVar
Significance: Likely pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
APOB-related disorder Pathogenic:1
Likely pathogenic, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Dec 21, 2023 | The APOB c.12460G>T variant is predicted to result in premature protein termination (p.Glu4154*). To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0062% of alleles in individuals of African descent in gnomAD. Nonsense variants in APOB are expected to be pathogenic. This variant is interpreted as likely pathogenic. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
MutationTaster
Benign
D
Vest4
GERP RS
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