Genetic Variant SAP30:p.Ala58Thr (chr4-173371354-G-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_003864.4(SAP30):c.172G>A(p.Ala58Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000188 in 1,486,670 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

SAP30
NM_003864.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.33

Variant links:

Genes affected

SAP30 (HGNC:10532): (Sin3A associated protein 30) 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, SAP18, HDAC1, HDAC2, RbAp46, RbAp48, and other polypeptides. This complex is active in deacetylating core histone octamers, but inactive in deacetylating nucleosomal histones. A pseudogene of this gene is located on chromosome 3. [provided by RefSeq, Jul 2008]

SAP30 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07237545).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SAP30	NM_003864.4 link	c.172G>A	p.Ala58Thr	missense_variant	Exon 1 of 4	ENST00000296504.4	NP_003855.1	O75446

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SAP30	ENST00000296504.4 link	c.172G>A	p.Ala58Thr	missense_variant	Exon 1 of 4	1	NM_003864.4	ENSP00000296504.3		O75446
SAP30	ENST00000504618.1 link	n.*122G>A		downstream_gene_variant		3

Frequencies

GnomAD3 genomes

AF:

0.000120

AC:

AN:

150378

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000413

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000222

AC:

AN:

134846

Hom.:

AF XY:

0.0000127

AC XY:

AN XY:

78620

show subpopulations

Gnomad AFR exome

AF:

0.000355

Gnomad AMR exome

AF:

0.0000579

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000823

AC:

AN:

1336184

Hom.:

Cov.:

AF XY:

0.00000754

AC XY:

AN XY:

663544

show subpopulations

Gnomad4 AFR exome

AF:

0.000187

Gnomad4 AMR exome

AF:

0.000111

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000133

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000189

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000113

AC:

AN:

150486

Hom.:

Cov.:

AF XY:

0.000109

AC XY:

AN XY:

73548

show subpopulations

Gnomad4 AFR

AF:

0.000387

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.000132

ExAC

AF:

0.0000625

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 27, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.172G>A (p.A58T) alteration is located in exon 1 (coding exon 1) of the SAP30 gene. This alteration results from a G to A substitution at nucleotide position 172, causing the alanine (A) at amino acid position 58 to be replaced by a threonine (T). 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

0.082

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.28

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.019

Eigen

Benign

-0.35

Eigen_PC

Benign

-0.25

FATHMM_MKL

Benign

0.17

LIST_S2

Benign

0.49

M_CAP

Pathogenic

0.62

MetaRNN

Benign

0.072

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.4

PrimateAI

Pathogenic

0.92

PROVEAN

Benign

-0.48

REVEL

Benign

0.082

Sift

Benign

0.34

Sift4G

Uncertain

0.047

Polyphen

0.066

Vest4

0.097

MutPred

0.17

Loss of glycosylation at P56 (P = 0.0057);

MVP

0.42

MPC

1.4

ClinPred

0.14

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.9

Varity_R

0.11

gMVP

0.32

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