Genetic Variant NM_005506.4:c.1430G>C (chr4-76161720-C-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM2

The NM_005506.4(SCARB2):c.1430G>C(p.Arg477Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,862 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R477Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SCARB2
NM_005506.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.77

Variant links:

Genes affected

SCARB2 (HGNC:1665): (scavenger receptor class B member 2) The protein encoded by this gene is a type III glycoprotein that is located primarily in limiting membranes of lysosomes and endosomes. Earlier studies in mice and rat suggested that this protein may participate in membrane transportation and the reorganization of endosomal/lysosomal compartment. The protein deficiency in mice was reported to impair cell membrane transport processes and cause pelvic junction obstruction, deafness, and peripheral neuropathy. Further studies in human showed that this protein is a ubiquitously expressed protein and that it is involved in the pathogenesis of HFMD (hand, foot, and mouth disease) caused by enterovirus-71 and possibly by coxsackievirus A16. Mutations in this gene caused an autosomal recessive progressive myoclonic epilepsy-4 (EPM4), also known as action myoclonus-renal failure syndrome (AMRF). Alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Feb 2011]

SCARB2 links:

ENSG00000286074 (HGNC:):

ENSG00000286074 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM1

In a mutagenesis_site Normal targeting of the protein to lysosomes. (size 0) in uniprot entity SCRB2_HUMAN

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCARB2	NM_005506.4 link	c.1430G>C	p.Arg477Pro	missense_variant	Exon 12 of 12	ENST00000264896.8	NP_005497.1	Q14108-1A0A024RDG6
SCARB2	NM_001204255.2 link	c.1001G>C	p.Arg334Pro	missense_variant	Exon 9 of 9		NP_001191184.1	Q14108-2
SCARB2	XM_047416429.1 link	c.956G>C	p.Arg319Pro	missense_variant	Exon 12 of 12		XP_047272385.1
SCARB2	XM_047416430.1 link	c.956G>C	p.Arg319Pro	missense_variant	Exon 12 of 12		XP_047272386.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SCARB2	ENST00000264896.8 link	c.1430G>C	p.Arg477Pro	missense_variant	Exon 12 of 12	1	NM_005506.4	ENSP00000264896.2		Q14108-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000797

AC:

AN:

250882

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135654

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461862

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000447

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.61

BayesDel_addAF

Uncertain

0.079

BayesDel_noAF

Uncertain

0.050

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.36

T;.;.;.;.;.

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.59

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.91

D;D;D;D;D;D

M_CAP

Uncertain

0.12

MetaRNN

Uncertain

0.49

T;T;T;T;T;T

MetaSVM

Uncertain

0.63

MutationAssessor

Benign

2.0

M;.;.;.;.;.

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-2.3

N;.;.;.;.;N

REVEL

Uncertain

0.51

Sift

Uncertain

0.0080

D;.;.;.;.;D

Sift4G

Pathogenic

0.0

D;.;.;.;.;D

Polyphen

1.0

D;.;.;.;.;.

Vest4

0.48

MutPred

0.22

Gain of loop (P = 0.0502);.;.;.;.;.;

MVP

0.90

MPC

1.0

ClinPred

0.76

GERP RS

5.2

Varity_R

0.40

gMVP

0.76

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over