17-7627571-C-A

Variant summary

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

The NM_133491.5(SAT2):c.65G>T(p.Arg22Leu) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.0000416 in 1,609,954 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/23 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: 𝑓 0.00021 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

SAT2
NM_133491.5 missense, splice_region

Scores

Splicing: ADA: 0.1504

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.68

Variant links:

Genes affected

SAT2 (HGNC:23160): (spermidine/spermine N1-acetyltransferase family member 2) Enables diamine N-acetyltransferase activity and identical protein binding activity. Involved in polyamine metabolic process. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

SAT2 links:

SHBG (HGNC:10839): (sex hormone binding globulin) This gene encodes a steroid binding protein that was first described as a plasma protein secreted by the liver but is now thought to participate in the regulation of steroid responses. The encoded protein transports androgens and estrogens in the blood, binding each steroid molecule as a dimer formed from identical or nearly identical monomers. Polymorphisms in this gene have been associated with polycystic ovary syndrome and type 2 diabetes mellitus. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

SHBG 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=0.19809127).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SAT2	NM_133491.5 linkuse as main transcript	c.65G>T	p.Arg22Leu	missense_variant, splice_region_variant	1/6	ENST00000269298.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SAT2	ENST00000269298.10 linkuse as main transcript	c.65G>T	p.Arg22Leu	missense_variant, splice_region_variant	1/6	1	NM_133491.5	P1

Frequencies

GnomAD3 genomes

AF:

0.000210

AC:

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000773

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

GnomAD3 exomes

AF:

0.0000689

AC:

AN:

246884

Hom.:

AF XY:

0.0000449

AC XY:

AN XY:

133510

show subpopulations

Gnomad AFR exome

AF:

0.000987

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:

0.00

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.0000240

AC:

AN:

1457740

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

724936

show subpopulations

Gnomad4 AFR exome

AF:

0.000989

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:

0.0000332

GnomAD4 genome

AF:

0.000210

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74408

show subpopulations

Gnomad4 AFR

AF:

0.000770

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

Alfa

AF:

0.0000722

Hom.:

Bravo

AF:

0.000310

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000906

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 15, 2023

The c.65G>T (p.R22L) alteration is located in exon 1 (coding exon 1) of the SAT2 gene. This alteration results from a G to T substitution at nucleotide position 65, causing the arginine (R) at amino acid position 22 to be replaced by a leucine (L). 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

0.24

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.14

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.089

T;T

Eigen

Benign

-0.14

Eigen_PC

Benign

-0.013

FATHMM_MKL

Uncertain

0.83

LIST_S2

Benign

0.46

T;T

M_CAP

Benign

0.023

MetaRNN

Benign

0.20

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.2

M;.

MutationTaster

Benign

0.90

D;D;D;D;D;D;D;D;D

PrimateAI

Uncertain

0.58

PROVEAN

Uncertain

-3.6

D;.

REVEL

Benign

0.20

Sift

Benign

0.058

T;.

Sift4G

Benign

0.080

T;T

Polyphen

0.0080

B;.

Vest4

0.73

MVP

0.42

MPC

0.45

ClinPred

0.18

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.36

gMVP

0.76

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.15

dbscSNV1_RF

Benign

0.34

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