Variant 17-2375828-C-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_014853.3(SGSM2):c.2437C>A(p.Leu813Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000097 in 1,546,318 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 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000086 ( 0 hom. )

Consequence

SGSM2
NM_014853.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.33

Variant links:

Genes affected

SGSM2 (HGNC:29026): (small G protein signaling modulator 2) The protein encoded by this gene is a GTPase activator with activity towards RAB32 and RAB33B, which are regulators of membrane trafficking. The encoded protein inactivates RAB32 and can bind RAB9A-GTP, a protein required for RAB32 activation. [provided by RefSeq, Oct 2016]

SGSM2 links:

SGSM2-AS1 (HGNC:):

SGSM2-AS1 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=0.12938175).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SGSM2	NM_014853.3 linkuse as main transcript	c.2437C>A	p.Leu813Met	missense_variant	18/24	ENST00000268989.8	NP_055668.2	O43147-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
SGSM2	ENST00000268989.8 linkuse as main transcript	c.2437C>A	p.Leu813Met	missense_variant	18/24	1	NM_014853.3	ENSP00000268989.3	O43147-2
SGSM2	ENST00000426855.6 linkuse as main transcript	c.2302C>A	p.Leu768Met	missense_variant	17/23	1		ENSP00000415107.2	O43147-1
SGSM2	ENST00000574563.5 linkuse as main transcript	c.2302C>A	p.Leu768Met	missense_variant	17/23	2		ENSP00000459126.1	O43147-5
SGSM2-AS1	ENST00000574290.1 linkuse as main transcript	n.402-136G>T		intron_variant		5

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.00000509

AC:

AN:

196490

Hom.:

AF XY:

0.00000957

AC XY:

AN XY:

104464

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:

0.00

Gnomad OTH exome

AF:

0.000217

GnomAD4 exome

AF:

0.00000861

AC:

AN:

1394084

Hom.:

Cov.:

AF XY:

0.00000582

AC XY:

AN XY:

686726

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000535

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:

0.00000370

Gnomad4 OTH exome

AF:

0.000104

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000196

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:

0.0000189

ExAC

AF:

0.00000829

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

Aug 02, 2023

The c.2437C>A (p.L813M) alteration is located in exon 18 (coding exon 18) of the SGSM2 gene. This alteration results from a C to A substitution at nucleotide position 2437, causing the leucine (L) at amino acid position 813 to be replaced by a methionine (M). 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

0.079

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.47

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.040

.;T;.

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.37

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.76

T;T;T

M_CAP

Benign

0.019

MetaRNN

Benign

0.13

T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.9

.;L;L

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-0.17

N;N;.

REVEL

Benign

0.13

Sift

Benign

0.044

D;D;.

Sift4G

Benign

0.13

T;T;T

Polyphen

0.96

D;D;P

Vest4

0.43

MutPred

0.44

.;Loss of helix (P = 0.1299);Loss of helix (P = 0.1299);

MVP

0.30

MPC

0.53

ClinPred

0.26

GERP RS

3.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.056

gMVP

0.37

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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