rs121912722

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PP3_Moderate

The NM_000039.3(APOA1):c.566C>G(p.Pro189Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000436 in 1,604,644 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: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

APOA1
NM_000039.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter P:1U:1

Conservation

PhyloP100: 5.19

Variant links:

Genes affected

APOA1 (HGNC:600): (apolipoprotein A1) This gene encodes apolipoprotein A-I, which is the major protein component of high density lipoprotein (HDL) in plasma. The encoded preproprotein is proteolytically processed to generate the mature protein, which promotes cholesterol efflux from tissues to the liver for excretion, and is a cofactor for lecithin cholesterolacyltransferase (LCAT), an enzyme responsible for the formation of most plasma cholesteryl esters. This gene is closely linked with two other apolipoprotein genes on chromosome 11. Defects in this gene are associated with HDL deficiencies, including Tangier disease, and with systemic non-neuropathic amyloidosis. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein. [provided by RefSeq, Dec 2015]

APOA1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.919

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
APOA1	NM_000039.3 link	c.566C>G	p.Pro189Arg	missense_variant	Exon 4 of 4	ENST00000236850.5	NP_000030.1	P02647A0A024R3E3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
APOA1	ENST00000236850.5 link	c.566C>G	p.Pro189Arg	missense_variant	Exon 4 of 4	1	NM_000039.3	ENSP00000236850.3		P02647

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000418

AC:

AN:

239404

Hom.:

AF XY:

0.00

AC XY:

AN XY:

131102

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000920

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000413

AC:

AN:

1452430

Hom.:

Cov.:

AF XY:

0.00000277

AC XY:

AN XY:

722440

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74358

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000303

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:1Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Apolipoprotein A-I deficiency

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Dec 01, 1989

- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 19, 2024

This sequence change replaces proline, which is neutral and non-polar, with arginine, which is basic and polar, at codon 189 of the APOA1 protein (p.Pro189Arg). This variant is present in population databases (rs121912722, gnomAD 0.0009%). This missense change has been observed in individual(s) with apolipoprotein A1 deficiency and/or low HDL-C (PMID: 2512329, 28870971). This variant is also known as Pro165Arg. ClinVar contains an entry for this variant (Variation ID: 17916). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt APOA1 protein function with a positive predictive value of 80%. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.68

BayesDel_addAF

Pathogenic

0.45

BayesDel_noAF

Pathogenic

0.40

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.42

T;T;T;T;T

Eigen

Uncertain

0.64

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.81

.;.;T;.;D

M_CAP

Pathogenic

0.70

MetaRNN

Pathogenic

0.92

D;D;D;D;D

MetaSVM

Pathogenic

0.90

MutationAssessor

Uncertain

2.9

M;M;.;M;M

PrimateAI

Uncertain

0.55

PROVEAN

Pathogenic

-8.3

D;D;D;D;D

REVEL

Pathogenic

0.66

Sift

Uncertain

0.0020

D;D;D;D;D

Sift4G

Uncertain

0.0060

D;D;D;D;D

Polyphen

1.0

D;D;.;D;D

Vest4

0.81

MutPred

0.57

Gain of MoRF binding (P = 9e-04);Gain of MoRF binding (P = 9e-04);.;Gain of MoRF binding (P = 9e-04);Gain of MoRF binding (P = 9e-04);

MVP

0.99

MPC

1.6

ClinPred

1.0

GERP RS

5.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.97

gMVP

0.69

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over