rs777270813

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_005506.4(SCARB2):c.1229A>T(p.Tyr410Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000123 in 1,461,874 control chromosomes in the GnomAD database, with no homozygous occurrence. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

SCARB2
NM_005506.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.76

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

action myoclonus-renal failure syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
progressive myoclonus epilepsy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
Unverricht-Lundborg syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

SCARB2 links:

ENSG00000286074 (HGNC:):

ENSG00000286074 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCARB2	NM_005506.4 link	c.1229A>T	p.Tyr410Phe	missense_variant	Exon 10 of 12	ENST00000264896.8	NP_005497.1	Q14108-1A0A024RDG6
SCARB2	NM_001204255.2 link	c.800A>T	p.Tyr267Phe	missense_variant	Exon 7 of 9		NP_001191184.1	Q14108-2
SCARB2	XM_047416429.1 link	c.755A>T	p.Tyr252Phe	missense_variant	Exon 10 of 12		XP_047272385.1
SCARB2	XM_047416430.1 link	c.755A>T	p.Tyr252Phe	missense_variant	Exon 10 of 12		XP_047272386.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SCARB2	ENST00000264896.8 link	c.1229A>T	p.Tyr410Phe	missense_variant	Exon 10 of 12	1	NM_005506.4	ENSP00000264896.2		Q14108-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251398

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000123

AC:

AN:

1461874

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727238

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.000252

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000540

AC:

AN:

1112000

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.481

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Progressive myoclonic epilepsy

Uncertain:1

Mar 15, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces tyrosine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 410 of the SCARB2 protein (p.Tyr410Phe). This variant is present in population databases (rs777270813, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with SCARB2-related conditions. ClinVar contains an entry for this variant (Variation ID: 531800). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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

Benign

0.12

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Benign

-0.22

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.23

T;.;.;.;.;.;.;.

Eigen

Benign

0.042

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.89

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

M_CAP

Benign

0.018

MetaRNN

Uncertain

0.43

T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.70

MutationAssessor

Benign

1.2

L;.;.;.;.;.;.;.

PhyloP100

3.8

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-1.3

N;.;.;.;.;.;N;.

REVEL

Benign

0.23

Sift

Benign

0.48

T;.;.;.;.;.;T;.

Sift4G

Benign

0.55

T;.;.;.;.;.;T;.

Polyphen

0.0020

B;.;.;.;.;.;.;.

Vest4

0.43

MutPred

0.80

Gain of glycosylation at Y410 (P = 0.0953);.;Gain of glycosylation at Y410 (P = 0.0953);.;.;.;.;Gain of glycosylation at Y410 (P = 0.0953);

MVP

0.19

MPC

0.22

ClinPred

0.38

GERP RS

6.1

PromoterAI

0.026

Neutral

(source)

Varity_R

0.66

gMVP

0.83

Mutation Taster

=48/52

disease causing

(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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over