rs398122987

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_014495.4(ANGPTL3):c.439_442delAACT(p.Asn147fs) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000198 in 1,567,704 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00021 ( 1 hom. )

Consequence

ANGPTL3
NM_014495.4 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 7.61

Publications

4 publications found

Variant links:

Genes affected

ANGPTL3 (HGNC:491): (angiopoietin like 3) This gene encodes a member of a family of secreted proteins that function in angiogenesis. The encoded protein, which is expressed predominantly in the liver, is further processed into an N-terminal coiled-coil domain-containing chain and a C-terminal fibrinogen chain. The N-terminal chain is important for lipid metabolism, while the C-terminal chain may be involved in angiogenesis. Mutations in this gene cause familial hypobetalipoproteinemia type 2. [provided by RefSeq, Aug 2015]

ANGPTL3 links:

DOCK7 (HGNC:19190): (dedicator of cytokinesis 7) The protein encoded by this gene is a guanine nucleotide exchange factor (GEF) that plays a role in axon formation and neuronal polarization. The encoded protein displays GEF activity toward RAC1 and RAC3 Rho small GTPases but not toward CDC42. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]

DOCK7 Gene-Disease associations (from GenCC):

genetic developmental and epileptic encephalopathy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
developmental and epileptic encephalopathy, 23
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, G2P

DOCK7 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 16 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PP5

Variant 1-62597996-CAACT-C is Pathogenic according to our data. Variant chr1-62597996-CAACT-C is described in ClinVar as Pathogenic. ClinVar VariationId is 91865.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANGPTL3	NM_014495.4 link	c.439_442delAACT	p.Asn147fs	frameshift_variant	Exon 1 of 7	ENST00000371129.4	NP_055310.1	Q9Y5C1
DOCK7	NM_001367561.1 link	c.1683-11376_1683-11373delAGTT		intron_variant	Intron 14 of 49	ENST00000635253.2	NP_001354490.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANGPTL3	ENST00000371129.4 link	c.439_442delAACT	p.Asn147fs	frameshift_variant	Exon 1 of 7	1	NM_014495.4	ENSP00000360170.3		Q9Y5C1
DOCK7	ENST00000635253.2 link	c.1683-11376_1683-11373delAGTT		intron_variant	Intron 14 of 49	5	NM_001367561.1	ENSP00000489124.1		Q96N67-1

Frequencies

GnomAD3 genomes

AF:

0.0000921

AC:

AN:

152000

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000172

AC:

AN:

208860

AF XY:

0.000192

show subpopulations

Gnomad AFR exome

AF:

0.0000684

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000635

Gnomad FIN exome

AF:

0.000101

Gnomad NFE exome

AF:

0.000217

Gnomad OTH exome

AF:

0.000208

GnomAD4 exome

AF:

0.000209

AC:

296

AN:

1415586

Hom.:

AF XY:

0.000219

AC XY:

154

AN XY:

703506

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30618

American (AMR)

AF:

0.0000330

AC:

AN:

30314

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23478

East Asian (EAS)

AF:

0.000204

AC:

AN:

39224

South Asian (SAS)

AF:

0.000299

AC:

AN:

76954

European-Finnish (FIN)

AF:

0.0000577

AC:

AN:

52002

Middle Eastern (MID)

AF:

0.00145

AC:

AN:

5516

European-Non Finnish (NFE)

AF:

0.000219

AC:

241

AN:

1099250

Other (OTH)

AF:

0.000206

AC:

AN:

58230

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<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:

0.0000920

AC:

AN:

152118

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74362

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41538

American (AMR)

AF:

0.00

AC:

AN:

15254

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.000193

AC:

AN:

5186

South Asian (SAS)

AF:

0.000207

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10578

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

67958

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000131

Hom.:

Bravo

AF:

0.0000907

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Familial hypobetalipoproteinemia 2

Pathogenic:2

Mar 01, 2012

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Aug 23, 2023

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:research

- -

not provided

Pathogenic:1

Nov 09, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change creates a premature translational stop signal (p.Asn147*) in the ANGPTL3 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in ANGPTL3 are known to be pathogenic (PMID: 22247256, 24058201). This variant is present in population databases (rs749131121, gnomAD 0.04%). This premature translational stop signal has been observed in individual(s) with dyslipidemia (PMID: 22247256, 36325899). ClinVar contains an entry for this variant (Variation ID: 91865). For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

7.6

Mutation Taster

=4/196

disease causing (ClinVar)

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over