chr11-116821070-C-A
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate
The NM_000482.4(APOA4):c.988G>T(p.Gly330Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,848 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 Uncertain significance (★).
Frequency
Genomes: not found (cov: 34)
Exomes 𝑓: 0.0000021 ( 0 hom. )
Consequence
APOA4
NM_000482.4 missense
NM_000482.4 missense
Scores
1
11
4
Clinical Significance
Conservation
PhyloP100: 3.38
Genes affected
APOA4 (HGNC:602): (apolipoprotein A4) Apoliprotein (apo) A-IV gene contains 3 exons separated by two introns. A sequence polymorphism has been identified in the 3'UTR of the third exon. The primary translation product is a 396-residue preprotein which after proteolytic processing is secreted its primary site of synthesis, the intestine, in association with chylomicron particles. Although its precise function is not known, apo A-IV is a potent activator of lecithin-cholesterol acyltransferase in vitro. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.849
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
APOA4 | NM_000482.4 | c.988G>T | p.Gly330Cys | missense_variant | 3/3 | ENST00000357780.5 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
APOA4 | ENST00000357780.5 | c.988G>T | p.Gly330Cys | missense_variant | 3/3 | 1 | NM_000482.4 | P1 | |
ENST00000645414.1 | n.219C>A | non_coding_transcript_exon_variant | 2/2 |
Frequencies
GnomAD3 genomes ? Cov.: 34
GnomAD3 genomes
?
Cov.:
34
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251480Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135922
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GnomAD4 exome AF: 0.00000205 AC: 3AN: 1461848Hom.: 0 Cov.: 86 AF XY: 0.00000138 AC XY: 1AN XY: 727226
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GnomAD4 genome ? Cov.: 34
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Cov.:
34
Bravo
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Apr 24, 2022 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. This variant has not been reported in the literature in individuals affected with APOA4-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.006%). This sequence change replaces glycine, which is neutral and non-polar, with cysteine, which is neutral and slightly polar, at codon 330 of the APOA4 protein (p.Gly330Cys). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Uncertain
Dann
Uncertain
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
M_CAP
Uncertain
D
MetaRNN
Pathogenic
D
MetaSVM
Uncertain
D
MutationTaster
Benign
D
PrimateAI
Benign
T
PROVEAN
Uncertain
D
REVEL
Uncertain
Sift
Uncertain
D
Sift4G
Uncertain
D
Vest4
MutPred
Loss of disorder (P = 0.0211);
MVP
MPC
ClinPred
D
GERP RS
gMVP
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