22-20425488-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_182895.5(SCARF2):c.2488G>A(p.Asp830Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000308 in 1,365,498 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/16 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

SCARF2
NM_182895.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.0980

Variant links:

Genes affected

SCARF2 (HGNC:19869): (scavenger receptor class F member 2) The protein encoded by this gene is similar to SCARF1/SREC-I, a scavenger receptor protein that mediates the binding and degradation of acetylated low density lipoprotein (Ac-LDL). This protein has only little activity of internalizing modified low density lipoproteins (LDL), but it can interact with SCARF1 through its extracellular domain. The association of this protein with SCARF1 is suppressed by the presence of scavenger ligands. Alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Jul 2008]

SCARF2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.021241993).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCARF2	NM_182895.5 link	c.2488G>A	p.Asp830Asn	missense_variant	Exon 11 of 11	ENST00000622235.5	NP_878315.2	Q96GP6-2
SCARF2	NM_153334.7 link	c.2503G>A	p.Asp835Asn	missense_variant	Exon 11 of 11		NP_699165.3	Q96GP6-1
SCARF2	XM_047441585.1 link	c.2602G>A	p.Asp868Asn	missense_variant	Exon 11 of 11		XP_047297541.1
SCARF2	XM_017029065.3 link	c.*717G>A		3_prime_UTR_variant	Exon 11 of 11		XP_016884554.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SCARF2	ENST00000622235.5 link	c.2488G>A	p.Asp830Asn	missense_variant	Exon 11 of 11	1	NM_182895.5	ENSP00000477564.2		Q96GP6-2
SCARF2	ENST00000623402.1 link	c.2503G>A	p.Asp835Asn	missense_variant	Exon 11 of 11	1		ENSP00000485276.1		Q96GP6-1

Frequencies

GnomAD3 genomes

AF:

0.0000395

AC:

AN:

152002

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:

0.00103

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000423

AC:

AN:

70946

Hom.:

AF XY:

0.0000483

AC XY:

AN XY:

41424

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:

0.000302

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000254

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000297

AC:

AN:

1213496

Hom.:

Cov.:

AF XY:

0.0000407

AC XY:

AN XY:

589878

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:

0.000641

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000202

Gnomad4 OTH exome

AF:

0.0000204

GnomAD4 genome

AF:

0.0000395

AC:

AN:

152002

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74260

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:

0.00103

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.000108

AC:

Asia WGS

AF:

0.00116

AC:

AN:

3464

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 09, 2020

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

DNA sequence analysis of the SCARF2 gene demonstrated a sequence change, c.2500G>A, in exon 11 that results in an amino acid change, p.Asp834Asn. This sequence change does not appear to have been previously described in patients with SCARF2-related disorders and has been described in the gnomAD database in three heterozygous individuals which corresponds to the population frequency of 0.0042% (dbSNP rs749349489). The p.Asp834Asn change affects a poorly conserved amino acid residue located in a domain of the SCARF2 protein that is not known to be functional. The p.Asp834Asn substitution appears to be benign using several in-silico pathogenicity prediction tools (SIFT, PolyPhen2, Align GVGD, REVEL). Due to these contrasting evidences and the lack of functional studies, the clinical significance of the p.Asp834Asn change remains unknown at this time. -

Inborn genetic diseases

Uncertain:1

Apr 25, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2500G>A (p.D834N) alteration is located in exon 11 (coding exon 11) of the SCARF2 gene. This alteration results from a G to A substitution at nucleotide position 2500, causing the aspartic acid (D) at amino acid position 834 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.76

CADD

Benign

7.1

DANN

Benign

0.89

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.031

LIST_S2

Benign

0.46

T;T

M_CAP

Benign

0.052

MetaRNN

Benign

0.021

T;T

MetaSVM

Benign

-1.0

PrimateAI

Uncertain

0.75

Sift4G

Benign

0.47

T;T

Vest4

0.052

MVP

0.081

ClinPred

0.018

GERP RS

-1.3

Varity_R

0.038

gMVP

0.099

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