rs187831231

Positions:

chr12-124814309-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_005505.5(SCARB1):c.523A>G(p.Thr175Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000212 in 1,614,186 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 0.00019 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00021 ( 0 hom. )

Consequence

SCARB1
NM_005505.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 3.62

Variant links:

Genes affected

SCARB1 (HGNC:1664): (scavenger receptor class B member 1) The protein encoded by this gene is a plasma membrane receptor for high density lipoprotein cholesterol (HDL). The encoded protein mediates cholesterol transfer to and from HDL. In addition, this protein is a receptor for hepatitis C virus glycoprotein E2 and facilitates cell entry by the virus, SARS-CoV2. [provided by RefSeq, Oct 2021]

SCARB1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.903

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SCARB1	NM_005505.5 linkuse as main transcript	c.523A>G	p.Thr175Ala	missense_variant	4/13	ENST00000261693.11	NP_005496.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SCARB1	ENST00000261693.11 linkuse as main transcript	c.523A>G	p.Thr175Ala	missense_variant	4/13	1	NM_005505.5	ENSP00000261693	P3	Q8WTV0-2

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000353

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000107

AC:

AN:

251494

Hom.:

AF XY:

0.0000883

AC XY:

AN XY:

135922

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000116

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:

0.000176

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000215

AC:

314

AN:

1461864

Hom.:

Cov.:

AF XY:

0.000191

AC XY:

139

AN XY:

727234

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000262

Gnomad4 OTH exome

AF:

0.000232

GnomAD4 genome

AF:

0.000190

AC:

AN:

152322

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.0000962

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000353

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000161

Hom.:

Bravo

AF:

0.000162

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1Other:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jul 03, 2023

Experimental studies have shown that this missense change affects SCARB1 function (PMID: 23029167, 27152966, 28363797, 33862056, 34372540). 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. 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 SCARB1 protein function. ClinVar contains an entry for this variant (Variation ID: 39738). This missense change has been observed in individual(s) with high HDL cholesterol levels (PMID: 21480869, 23403740). This variant is present in population databases (rs187831231, gnomAD 0.02%). This sequence change replaces threonine, which is neutral and polar, with alanine, which is neutral and non-polar, at codon 175 of the SCARB1 protein (p.Thr175Ala). -

High density lipoprotein cholesterol level quantitative trait locus 6

Other:1

association, no assertion criteria provided

literature only

OMIM

Jun 01, 2011

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.41

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Pathogenic

0.28

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.65

.;D;.;T;T

Eigen

Uncertain

0.63

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.89

D;D;D;D;D

M_CAP

Uncertain

0.12

MetaRNN

Pathogenic

0.90

D;D;D;D;D

MetaSVM

Uncertain

0.54

MutationAssessor

Pathogenic

3.2

M;M;M;.;.

MutationTaster

Benign

1.0

D;D;D;D;D;D;D;D

PrimateAI

Benign

0.45

PROVEAN

Uncertain

-4.0

D;D;D;D;D

REVEL

Pathogenic

0.80

Sift

Uncertain

0.0070

D;D;D;D;D

Sift4G

Uncertain

0.011

D;D;D;D;D

Polyphen

0.97, 0.98, 0.99

.;D;D;D;.

Vest4

0.81

MVP

0.88

MPC

1.2

ClinPred

0.87

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.78

gMVP

0.89

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