rs368869126

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_005506.4(SCARB2):​c.424-4G>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000114 in 1,611,702 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00056 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000067 ( 0 hom. )

Consequence

SCARB2
NM_005506.4 splice_region, intron

Scores

2
Splicing: ADA: 0.00003299
2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:3

Conservation

PhyloP100: -0.310

Publications

0 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, STRONG Submitted by: ClinGen, PanelApp Australia
  • Unverricht-Lundborg syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.9).
BP6
Variant 4-76179709-C-T is Benign according to our data. Variant chr4-76179709-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 379302.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000565 (86/152312) while in subpopulation AFR AF = 0.00195 (81/41560). AF 95% confidence interval is 0.00161. There are 0 homozygotes in GnomAd4. There are 34 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005506.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SCARB2
NM_005506.4
MANE Select
c.424-4G>A
splice_region intron
N/ANP_005497.1Q14108-1
SCARB2
NM_001204255.2
c.276-3799G>A
intron
N/ANP_001191184.1Q14108-2

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SCARB2
ENST00000264896.8
TSL:1 MANE Select
c.424-4G>A
splice_region intron
N/AENSP00000264896.2Q14108-1
SCARB2
ENST00000640634.1
TSL:5
c.544-4G>A
splice_region intron
N/AENSP00000492737.1A0A1W2PRS1
SCARB2
ENST00000862445.1
c.424-4G>A
splice_region intron
N/AENSP00000532504.1

Frequencies

GnomAD3 genomes
AF:
0.000565
AC:
86
AN:
152194
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00195
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.000282
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000172
AC:
43
AN:
250504
AF XY:
0.000133
show subpopulations
Gnomad AFR exome
AF:
0.00191
Gnomad AMR exome
AF:
0.0000289
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000954
Gnomad NFE exome
AF:
0.0000617
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.0000672
AC:
98
AN:
1459390
Hom.:
0
Cov.:
30
AF XY:
0.0000565
AC XY:
41
AN XY:
726208
show subpopulations
African (AFR)
AF:
0.00200
AC:
67
AN:
33440
American (AMR)
AF:
0.0000447
AC:
2
AN:
44722
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26130
East Asian (EAS)
AF:
0.0000504
AC:
2
AN:
39692
South Asian (SAS)
AF:
0.0000232
AC:
2
AN:
86226
European-Finnish (FIN)
AF:
0.0000379
AC:
2
AN:
52802
Middle Eastern (MID)
AF:
0.000174
AC:
1
AN:
5754
European-Non Finnish (NFE)
AF:
0.0000153
AC:
17
AN:
1110296
Other (OTH)
AF:
0.0000829
AC:
5
AN:
60328
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.462
Heterozygous variant carriers
0
6
12
17
23
29
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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
AF:
0.000565
AC:
86
AN:
152312
Hom.:
0
Cov.:
33
AF XY:
0.000456
AC XY:
34
AN XY:
74488
show subpopulations
African (AFR)
AF:
0.00195
AC:
81
AN:
41560
American (AMR)
AF:
0.0000654
AC:
1
AN:
15302
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5180
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.000282
AC:
3
AN:
10624
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000147
AC:
1
AN:
68028
Other (OTH)
AF:
0.00
AC:
0
AN:
2110
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.521
Heterozygous variant carriers
0
5
10
16
21
26
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.0000774
Hom.:
0
Bravo
AF:
0.000725

ClinVar

ClinVar submissions
Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
1
not provided (2)
-
1
-
Inborn genetic diseases (1)
-
-
1
Progressive myoclonic epilepsy (1)
-
-
1
SCARB2-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.90
CADD
Benign
3.5
DANN
Benign
0.70
PhyloP100
-0.31

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000033
dbscSNV1_RF
Benign
0.0080
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

Other links and lift over

dbSNP: rs368869126; hg19: chr4-77100862; API