2-21006167-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6BP7BA1

The NM_000384.3(APOB):c.10701G>A(p.Thr3567Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00396 in 1,613,940 control chromosomes in the GnomAD database, including 200 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T3567T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.020 ( 91 hom., cov: 33)

Exomes 𝑓: 0.0023 ( 109 hom. )

Consequence

APOB
NM_000384.3 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:10

Conservation

PhyloP100: -4.65

Publications

6 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

APOB links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.81).

BP6

Variant 2-21006167-C-T is Benign according to our data. Variant chr2-21006167-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 265893.

BP7

Synonymous conserved (PhyloP=-4.65 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0675 is higher than 0.05.

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.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	APOB	NM_000384.3	MANE Select	c.10701G>A	p.Thr3567Thr	synonymous	Exon 26 of 29	NP_000375.3	P04114

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	APOB	ENST00000233242.5	TSL:1 MANE Select	c.10701G>A	p.Thr3567Thr	synonymous	Exon 26 of 29	ENSP00000233242.1	P04114

Frequencies

GnomAD3 genomes

AF:

0.0201

AC:

3056

AN:

152076

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0696

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00806

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000176

Gnomad OTH

AF:

0.0182

GnomAD2 exomes

AF:

0.00542

AC:

1359

AN:

250872

AF XY:

0.00390

show subpopulations

Gnomad AFR exome

AF:

0.0711

Gnomad AMR exome

AF:

0.00406

Gnomad ASJ exome

AF:

0.0000993

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000327

Gnomad OTH exome

AF:

0.00376

GnomAD4 exome

AF:

0.00228

AC:

3335

AN:

1461746

Hom.:

109

Cov.:

AF XY:

0.00193

AC XY:

1405

AN XY:

727162

show subpopulations

African (AFR)

AF:

0.0774

AC:

2589

AN:

33466

American (AMR)

AF:

0.00445

AC:

199

AN:

44690

Ashkenazi Jewish (ASJ)

AF:

0.000115

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000151

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.0000374

AC:

AN:

53406

Middle Eastern (MID)

AF:

0.00607

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000152

AC:

169

AN:

1111944

Other (OTH)

AF:

0.00538

AC:

325

AN:

60384

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

210

420

629

839

1049

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

172

258

344

430

<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:

0.0201

AC:

3064

AN:

152194

Hom.:

Cov.:

AF XY:

0.0197

AC XY:

1466

AN XY:

74412

show subpopulations

African (AFR)

AF:

0.0696

AC:

2888

AN:

41508

American (AMR)

AF:

0.00805

AC:

123

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.000415

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000176

AC:

AN:

68004

Other (OTH)

AF:

0.0180

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

142

284

427

569

711

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

120

150

<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:

0.0102

Hom.:

Bravo

AF:

0.0222

Asia WGS

AF:

0.00433

AC:

AN:

3478

EpiCase

AF:

0.000382

EpiControl

AF:

0.000237

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Hypercholesterolemia, familial, 1 (3)

not provided (2)

not specified (2)

Cardiovascular phenotype (1)

Familial hypobetalipoproteinemia 1 (1)

Hypercholesterolemia, autosomal dominant, type B (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

-0.81

CADD

Benign

0.12

(source)

DANN

Benign

0.62

PhyloP100

-4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism (auto)

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over