Variant 19-2248423-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_007165.5(SF3A2):c.1272G>C(p.Gln424His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000512 in 1,368,350 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 28)

Exomes 𝑓: 0.0000049 ( 0 hom. )

Consequence

SF3A2
NM_007165.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.248

Variant links:

Genes affected

SF3A2 (HGNC:10766): (splicing factor 3a subunit 2) This gene encodes subunit 2 of the splicing factor 3a protein complex. The splicing factor 3a heterotrimer includes subunits 1, 2 and 3 and is necessary for the in vitro conversion of 15S U2 snRNP into an active 17S particle that performs pre-mRNA splicing. Subunit 2 interacts with subunit 1 through its amino-terminus while the single zinc finger domain of subunit 2 plays a role in its binding to the 15S U2 snRNP. Subunit 2 may also function independently of its RNA splicing function as a microtubule-binding protein. [provided by RefSeq, Jul 2008]

SF3A2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.13984749).

BS2

High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SF3A2	NM_007165.5 linkuse as main transcript	c.1272G>C	p.Gln424His	missense_variant	9/9	ENST00000221494.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SF3A2	ENST00000221494.10 linkuse as main transcript	c.1272G>C	p.Gln424His	missense_variant	9/9	1	NM_007165.5	P1

Frequencies

GnomAD3 genomes

AF:

0.00000665

AC:

AN:

150460

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000286

AC:

AN:

34948

Hom.:

AF XY:

0.00

AC XY:

AN XY:

18418

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000516

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000493

AC:

AN:

1217890

Hom.:

Cov.:

AF XY:

0.00000341

AC XY:

AN XY:

585690

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000602

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000665

AC:

AN:

150460

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73362

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:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000148

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 21, 2023

The c.1272G>C (p.Q424H) alteration is located in exon 9 (coding exon 8) of the SF3A2 gene. This alteration results from a G to C substitution at nucleotide position 1272, causing the glutamine (Q) at amino acid position 424 to be replaced by a histidine (H). 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

0.19

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.49

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.054

Eigen

Benign

-0.29

Eigen_PC

Benign

-0.29

FATHMM_MKL

Benign

0.48

LIST_S2

Benign

0.64

M_CAP

Benign

0.050

MetaRNN

Benign

0.14

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.69

MutationTaster

Benign

1.0

PrimateAI

Pathogenic

0.82

PROVEAN

Benign

-0.060

REVEL

Benign

0.069

Sift

Benign

0.037

Sift4G

Uncertain

0.014

Polyphen

0.83

Vest4

0.19

MutPred

0.23

Loss of glycosylation at P426 (P = 0.2742);

MVP

0.46

MPC

0.59

ClinPred

0.21

GERP RS

1.8

Varity_R

0.071

gMVP

0.21

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