rs1799812

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_StrongBP6BP7BS2

The NM_000384.3(APOB):​c.10131G>A​(p.Leu3377Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00698 in 1,613,994 control chromosomes in the GnomAD database, including 66 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 0.0056 ( 7 hom., cov: 33)
Exomes 𝑓: 0.0071 ( 59 hom. )

Consequence

APOB
NM_000384.3 synonymous

Scores

2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:14

Conservation

PhyloP100: -1.14

Publications

7 publications found
Variant links:
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]
APOB Gene-Disease associations (from GenCC):
  • hypercholesterolemia, autosomal dominant, type B
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
  • familial hypobetalipoproteinemia 1
    Inheritance: AR, SD, AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Genomics England PanelApp
  • homozygous familial hypercholesterolemia
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.53).
BP6
Variant 2-21006737-C-T is Benign according to our data. Variant chr2-21006737-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 265890.
BP7
Synonymous conserved (PhyloP=-1.14 with no splicing effect.
BS2
High Homozygotes in GnomAd4 at 7 AD,AR,SD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000384.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
APOB
NM_000384.3
MANE Select
c.10131G>Ap.Leu3377Leu
synonymous
Exon 26 of 29NP_000375.3P04114

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
APOB
ENST00000233242.5
TSL:1 MANE Select
c.10131G>Ap.Leu3377Leu
synonymous
Exon 26 of 29ENSP00000233242.1P04114

Frequencies

GnomAD3 genomes
AF:
0.00557
AC:
847
AN:
152104
Hom.:
7
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00155
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00465
Gnomad ASJ
AF:
0.00115
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00290
Gnomad FIN
AF:
0.00481
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.00928
Gnomad OTH
AF:
0.00526
GnomAD2 exomes
AF:
0.00579
AC:
1453
AN:
250764
AF XY:
0.00626
show subpopulations
Gnomad AFR exome
AF:
0.000926
Gnomad AMR exome
AF:
0.00405
Gnomad ASJ exome
AF:
0.000795
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00509
Gnomad NFE exome
AF:
0.00850
Gnomad OTH exome
AF:
0.00932
GnomAD4 exome
AF:
0.00713
AC:
10425
AN:
1461772
Hom.:
59
Cov.:
36
AF XY:
0.00713
AC XY:
5182
AN XY:
727188
show subpopulations
African (AFR)
AF:
0.00161
AC:
54
AN:
33468
American (AMR)
AF:
0.00409
AC:
183
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.000689
AC:
18
AN:
26132
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39692
South Asian (SAS)
AF:
0.00541
AC:
467
AN:
86254
European-Finnish (FIN)
AF:
0.00541
AC:
289
AN:
53410
Middle Eastern (MID)
AF:
0.00954
AC:
55
AN:
5766
European-Non Finnish (NFE)
AF:
0.00802
AC:
8913
AN:
1111936
Other (OTH)
AF:
0.00737
AC:
445
AN:
60394
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.485
Heterozygous variant carriers
0
650
1301
1951
2602
3252
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
312
624
936
1248
1560
<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:
0.00556
AC:
847
AN:
152222
Hom.:
7
Cov.:
33
AF XY:
0.00539
AC XY:
401
AN XY:
74432
show subpopulations
African (AFR)
AF:
0.00154
AC:
64
AN:
41536
American (AMR)
AF:
0.00465
AC:
71
AN:
15284
Ashkenazi Jewish (ASJ)
AF:
0.00115
AC:
4
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5188
South Asian (SAS)
AF:
0.00291
AC:
14
AN:
4818
European-Finnish (FIN)
AF:
0.00481
AC:
51
AN:
10600
Middle Eastern (MID)
AF:
0.00340
AC:
1
AN:
294
European-Non Finnish (NFE)
AF:
0.00928
AC:
631
AN:
68008
Other (OTH)
AF:
0.00520
AC:
11
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.500
Heterozygous variant carriers
0
43
86
130
173
216
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome 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
Alfa
AF:
0.00741
Hom.:
16
Bravo
AF:
0.00496
Asia WGS
AF:
0.000577
AC:
2
AN:
3478
EpiCase
AF:
0.00840
EpiControl
AF:
0.00996

ClinVar

ClinVar submissions
Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
-
5
not provided (5)
-
2
2
Hypercholesterolemia, familial, 1 (4)
-
-
3
not specified (3)
-
-
1
Cardiovascular phenotype (1)
-
-
1
Familial hypercholesterolemia (1)
-
1
-
Familial hypobetalipoproteinemia 1 (1)
-
-
1
Hypercholesterolemia, autosomal dominant, type B (1)
-
-
1
Hypercholesterolemia, autosomal dominant, type B;C4551990:Familial hypobetalipoproteinemia 1 (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.53
CADD
Benign
0.40
DANN
Benign
0.68
PhyloP100
-1.1
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Mutation Taster
=99/1
polymorphism

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: rs1799812; hg19: chr2-21229609; API