Genetic Variant SIRT2:p.Asp308Val (chr19-38879656-T-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_012237.4(SIRT2):c.923A>T(p.Asp308Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000318 in 1,574,526 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

SIRT2
NM_012237.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.09

Variant links:

Genes affected

SIRT2 (HGNC:10886): (sirtuin 2) This gene encodes a member of the sirtuin family of proteins, homologs to the yeast Sir2 protein. Members of the sirtuin family are characterized by a sirtuin core domain and grouped into four classes. The functions of human sirtuins have not yet been determined; however, yeast sirtuin proteins are known to regulate epigenetic gene silencing and suppress recombination of rDNA. Studies suggest that the human sirtuins may function as intracellular regulatory proteins with mono-ADP-ribosyltransferase activity. The protein encoded by this gene is included in class I of the sirtuin family. Several transcript variants are resulted from alternative splicing of this gene. [provided by RefSeq, Jul 2010]

SIRT2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SIRT2	NM_012237.4 link	c.923A>T	p.Asp308Val	missense_variant	Exon 14 of 16	ENST00000249396.12	NP_036369.2	Q8IXJ6-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SIRT2	ENST00000249396.12 link	c.923A>T	p.Asp308Val	missense_variant	Exon 14 of 16	1	NM_012237.4	ENSP00000249396.7		Q8IXJ6-1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

151940

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000967

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

7.03e-7

AC:

AN:

1422586

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

704218

show subpopulations

Gnomad4 AFR exome

AF:

0.0000308

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

151940

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74196

show subpopulations

Gnomad4 AFR

AF:

0.0000967

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 07, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.923A>T (p.D308V) alteration is located in exon 14 (coding exon 14) of the SIRT2 gene. This alteration results from a A to T substitution at nucleotide position 923, causing the aspartic acid (D) at amino acid position 308 to be replaced by a valine (V). 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

Pathogenic

0.61

BayesDel_addAF

Pathogenic

0.16

BayesDel_noAF

Uncertain

0.0

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.60

D;.;T

Eigen

Benign

0.18

Eigen_PC

Uncertain

0.27

FATHMM_MKL

Pathogenic

0.97

M_CAP

Uncertain

0.13

MetaRNN

Uncertain

0.45

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.5

M;.;.

PrimateAI

Uncertain

0.74

PROVEAN

Uncertain

-3.7

D;D;.

REVEL

Uncertain

0.35

Sift

Benign

0.28

T;T;.

Sift4G

Benign

0.30

T;.;T

Polyphen

0.096

B;B;.

Vest4

0.54

MutPred

0.46

Loss of disorder (P = 0.015);.;.;

MVP

0.44

MPC

0.64

ClinPred

0.98

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.53

gMVP

0.75

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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