rs147210663

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 1P and 9B. PP2BP4_StrongBP6BS2

The NM_000040.3(APOC3):​c.127G>A​(p.Ala43Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000559 in 1,613,060 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0010 ( 0 hom., cov: 31)
Exomes 𝑓: 0.00051 ( 4 hom. )

Consequence

APOC3
NM_000040.3 missense

Scores

3
8
7

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:1B:4

Conservation

PhyloP100: 4.30

Publications

54 publications found
Variant links:
Genes affected
APOC3 (HGNC:610): (apolipoprotein C3) This gene encodes a protein component of triglyceride (TG)-rich lipoproteins (TRLs) including very low density lipoproteins (VLDL), high density lipoproteins (HDL) and chylomicrons. The encoded protein plays a role in role in the metabolism of these TRLs through multiple modes. This protein has been shown to promote the secretion of VLDL1, inhibit lipoprotein lipase enzyme activity, and delay catabolism of TRL remnants. Mutations in this gene are associated with low plasma triglyceride levels and reduced risk of ischemic cardiovascular disease, and hyperalphalipoproteinemia, which is characterized by elevated levels of high density lipoprotein (HDL) and HDL cholesterol in human patients. This gene and other related genes comprise an apolipoprotein gene cluster on chromosome 11. [provided by RefSeq, Sep 2017]
APOC3 Gene-Disease associations (from GenCC):
  • cholesterol-ester transfer protein deficiency
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

PP2
Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 2 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: -0.057647 (below the threshold of 3.09). Trascript score misZ: 0.23808 (below the threshold of 3.09). GenCC associations: The gene is linked to cholesterol-ester transfer protein deficiency.
BP4
Computational evidence support a benign effect (MetaRNN=0.018726647).
BP6
Variant 11-116830844-G-A is Benign according to our data. Variant chr11-116830844-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 139561.
BS2
High AC in GnomAd4 at 157 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
APOC3NM_000040.3 linkc.127G>A p.Ala43Thr missense_variant Exon 3 of 4 ENST00000227667.8 NP_000031.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
APOC3ENST00000227667.8 linkc.127G>A p.Ala43Thr missense_variant Exon 3 of 4 1 NM_000040.3 ENSP00000227667.2

Frequencies

GnomAD3 genomes
AF:
0.00104
AC:
158
AN:
152002
Hom.:
0
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.00242
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000589
Gnomad ASJ
AF:
0.0107
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000132
Gnomad OTH
AF:
0.00144
GnomAD2 exomes
AF:
0.000868
AC:
217
AN:
250126
AF XY:
0.000716
show subpopulations
Gnomad AFR exome
AF:
0.00261
Gnomad AMR exome
AF:
0.000869
Gnomad ASJ exome
AF:
0.0111
Gnomad EAS exome
AF:
0.000109
Gnomad FIN exome
AF:
0.0000463
Gnomad NFE exome
AF:
0.000186
Gnomad OTH exome
AF:
0.00131
GnomAD4 exome
AF:
0.000509
AC:
744
AN:
1460940
Hom.:
4
Cov.:
42
AF XY:
0.000490
AC XY:
356
AN XY:
726766
show subpopulations
African (AFR)
AF:
0.00128
AC:
43
AN:
33480
American (AMR)
AF:
0.000738
AC:
33
AN:
44704
Ashkenazi Jewish (ASJ)
AF:
0.0125
AC:
326
AN:
26128
East Asian (EAS)
AF:
0.0000504
AC:
2
AN:
39700
South Asian (SAS)
AF:
0.000174
AC:
15
AN:
86246
European-Finnish (FIN)
AF:
0.0000190
AC:
1
AN:
52572
Middle Eastern (MID)
AF:
0.000173
AC:
1
AN:
5766
European-Non Finnish (NFE)
AF:
0.000231
AC:
257
AN:
1111964
Other (OTH)
AF:
0.00109
AC:
66
AN:
60380
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.467
Heterozygous variant carriers
0
50
100
150
200
250
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00103
AC:
157
AN:
152120
Hom.:
0
Cov.:
31
AF XY:
0.000995
AC XY:
74
AN XY:
74362
show subpopulations
African (AFR)
AF:
0.00241
AC:
100
AN:
41502
American (AMR)
AF:
0.000523
AC:
8
AN:
15288
Ashkenazi Jewish (ASJ)
AF:
0.0107
AC:
37
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5178
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4810
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10604
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000132
AC:
9
AN:
67958
Other (OTH)
AF:
0.00143
AC:
3
AN:
2102
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.516
Heterozygous variant carriers
0
8
16
25
33
41
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000660
Hom.:
0
Bravo
AF:
0.00120
ESP6500AA
AF:
0.00159
AC:
7
ESP6500EA
AF:
0.000931
AC:
8
ExAC
AF:
0.000700
AC:
85
EpiCase
AF:
0.000382
EpiControl
AF:
0.000296

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:1Uncertain:1Benign:4
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:1Benign:1
Mar 22, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Dec 04, 2019
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Reported in association with low plasma triglyceride levels (Liu et al., 2000; Crosby et al., 2014; Jorgensen et al., 2014; Bochem et al., 2014); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Published functional studies demonstrate a damaging effect on protein function (Sundaram et al., 2010); This variant is associated with the following publications: (PMID: 11060345, 20097930, 28825717, 24941082, 29237685, 32041611, 24941081, 31589614, 23701270) -

Apolipoprotein c-III deficiency Pathogenic:1
Jul 03, 2014
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

- -

not specified Benign:1
Aug 01, 2023
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Coronary heart disease Benign:1
Jun 18, 2014
ClinVar Staff, National Center for Biotechnology Information (NCBI)
Significance:protective
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Cardiovascular phenotype Benign:1
Aug 28, 2019
Ambry Genetics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.27
BayesDel_addAF
Benign
-0.087
T
BayesDel_noAF
Uncertain
0.10
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.88
.;D;.;.
Eigen
Uncertain
0.28
Eigen_PC
Benign
0.15
FATHMM_MKL
Uncertain
0.86
D
LIST_S2
Benign
0.78
T;T;.;T
M_CAP
Pathogenic
0.38
D
MetaRNN
Benign
0.019
T;T;T;T
MetaSVM
Uncertain
0.53
D
PhyloP100
4.3
PrimateAI
Benign
0.33
T
PROVEAN
Uncertain
-3.3
D;D;D;.
REVEL
Pathogenic
0.65
Sift
Uncertain
0.021
D;D;D;.
Sift4G
Uncertain
0.033
D;D;D;D
Polyphen
1.0
.;D;.;.
Vest4
0.34, 0.34
MVP
0.91
MPC
0.46
ClinPred
0.034
T
GERP RS
4.8
PromoterAI
0.0063
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.13
gMVP
0.67
Mutation Taster
=67/33
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs147210663; hg19: chr11-116701560; COSMIC: COSV52637070; COSMIC: COSV52637070; API