Variant 13-21140568-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_005870.5(SAP18):c.16G>A(p.Val6Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000294 in 1,600,456 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 10/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

SAP18
NM_005870.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.73

Variant links:

Genes affected

SAP18 (HGNC:10530): (Sin3A associated protein 18) Histone acetylation plays a key role in the regulation of eukaryotic gene expression. Histone acetylation and deacetylation are catalyzed by multisubunit complexes. The protein encoded by this gene is a component of the histone deacetylase complex, which includes SIN3, SAP30, HDAC1, HDAC2, RbAp46, RbAp48, and other polypeptides. This protein directly interacts with SIN3 and enhances SIN3-mediated transcriptional repression when tethered to the promoter. A pseudogene has been identified on chromosome 2. [provided by RefSeq, Dec 2008]

SAP18 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.26711434).

BS2

High AC in GnomAdExome4 at 43 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
SAP18	NM_005870.5 linkuse as main transcript	c.16G>A	p.Val6Ile	missense_variant	1/4	ENST00000382533.9
SAP18	NM_001366643.2 linkuse as main transcript	c.-190G>A		5_prime_UTR_variant	1/5
SAP18	NR_172492.1 linkuse as main transcript	n.450G>A		non_coding_transcript_exon_variant	1/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SAP18	ENST00000382533.9 linkuse as main transcript	c.16G>A	p.Val6Ile	missense_variant	1/4	1	NM_005870.5		O00422-2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152262

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000309

AC:

AN:

226864

Hom.:

AF XY:

0.0000326

AC XY:

AN XY:

122848

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:

0.0000694

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000297

AC:

AN:

1448194

Hom.:

Cov.:

AF XY:

0.0000348

AC XY:

AN XY:

719240

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:

0.0000371

Gnomad4 OTH exome

AF:

0.0000334

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152262

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74388

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000412

AC:

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 06, 2023

The c.16G>A (p.V6I) alteration is located in exon 1 (coding exon 1) of the SAP18 gene. This alteration results from a G to A substitution at nucleotide position 16, causing the valine (V) at amino acid position 6 to be replaced by an isoleucine (I). 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

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0051

T;T

Eigen

Uncertain

0.41

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.53

.;T

M_CAP

Benign

0.038

MetaRNN

Benign

0.27

T;T

MetaSVM

Benign

-0.96

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.71

PROVEAN

Benign

-0.050

N;.

REVEL

Benign

0.11

Sift

Benign

0.056

T;.

Sift4G

Benign

0.47

T;T

Vest4

0.36

MutPred

0.32

Loss of sheet (P = 0.1158);Loss of sheet (P = 0.1158);

MVP

0.53

MPC

0.00088

ClinPred

0.44

GERP RS

5.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

gMVP

0.31

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