rs550212420

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_005877.6(SF3A1):​c.876A>C​(p.Gln292His) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000137 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/24 in silico tools predict 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 Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SF3A1
NM_005877.6 missense, splice_region

Scores

2
3
13
Splicing: ADA: 0.5219
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.04

Publications

0 publications found
Variant links:
Genes affected
SF3A1 (HGNC:10765): (splicing factor 3a subunit 1) This gene encodes a subunit of the splicing factor 3a protein complex. The splicing factor 3a heterotrimer is a component of the mature U2 small nuclear ribonucleoprotein particle (snRNP). U2 small nuclear ribonucleoproteins play a critical role in spliceosome assembly and pre-mRNA splicing. [provided by RefSeq, Aug 2014]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.28747162).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005877.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SF3A1
NM_005877.6
MANE Select
c.876A>Cp.Gln292His
missense splice_region
Exon 6 of 16NP_005868.1Q15459-1

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SF3A1
ENST00000215793.13
TSL:1 MANE Select
c.876A>Cp.Gln292His
missense splice_region
Exon 6 of 16ENSP00000215793.7Q15459-1
SF3A1
ENST00000872797.1
c.828A>Cp.Gln276His
missense splice_region
Exon 6 of 16ENSP00000542856.1
SF3A1
ENST00000872796.1
c.876A>Cp.Gln292His
missense splice_region
Exon 6 of 14ENSP00000542855.1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000402
AC:
1
AN:
248674
AF XY:
0.00000743
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:
0.00000137
AC:
2
AN:
1461888
Hom.:
0
Cov.:
34
AF XY:
0.00000138
AC XY:
1
AN XY:
727242
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33480
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.0000504
AC:
2
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53414
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1112012
Other (OTH)
AF:
0.00
AC:
0
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.400
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome 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
GnomAD4 genome
Cov.:
32

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
not specified (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.16
BayesDel_addAF
Benign
-0.23
T
BayesDel_noAF
Benign
-0.40
CADD
Benign
22
DANN
Uncertain
0.99
DEOGEN2
Benign
0.16
T
Eigen
Uncertain
0.22
Eigen_PC
Benign
0.22
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.86
D
M_CAP
Benign
0.017
T
MetaRNN
Benign
0.29
T
MetaSVM
Benign
-1.1
T
MutationAssessor
Benign
0.94
L
PhyloP100
4.0
PrimateAI
Pathogenic
0.79
T
PROVEAN
Benign
-1.2
N
REVEL
Benign
0.13
Sift
Benign
0.13
T
Sift4G
Benign
0.12
T
Polyphen
0.99
D
Vest4
0.33
MutPred
0.22
Loss of glycosylation at P296 (P = 0.1565)
MVP
0.44
MPC
1.9
ClinPred
0.51
D
GERP RS
3.4
PromoterAI
-0.070
Neutral
RBP_binding_hub_radar
1.1
RBP_regulation_power_radar
2.8
Varity_R
0.086
gMVP
0.61
Mutation Taster
=46/54
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.52
dbscSNV1_RF
Benign
0.56
SpliceAI score (max)
0.060
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: rs550212420; hg19: chr22-30738190; API