Variant 17-2375858-T-C details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_014853.3(SGSM2):c.2467T>C(p.Cys823Arg) variant causes a missense change. The variant allele was found at a frequency of 0.0000702 in 1,524,978 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 0.00037 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000036 ( 0 hom. )

Consequence

SGSM2
NM_014853.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.32

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:56091): (SGSM2 antisense RNA 1)

SGSM2-AS1 links:

Genome browser will be placed here

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/exons	MANE	Protein	UniProt
SGSM2	NM_014853.3 linkuse as main transcript	c.2467T>C	p.Cys823Arg	missense_variant	18/24	ENST00000268989.8	NP_055668.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SGSM2	ENST00000268989.8 linkuse as main transcript	c.2467T>C	p.Cys823Arg	missense_variant	18/24	1	NM_014853.3	ENSP00000268989	P4	O43147-2
SGSM2	ENST00000426855.6 linkuse as main transcript	c.2332T>C	p.Cys778Arg	missense_variant	17/23	1		ENSP00000415107	A1	O43147-1
SGSM2-AS1	ENST00000574290.1 linkuse as main transcript	n.402-166A>G		intron_variant, non_coding_transcript_variant		5
SGSM2	ENST00000574563.5 linkuse as main transcript	c.2332T>C	p.Cys778Arg	missense_variant	17/23	2		ENSP00000459126		O43147-5

Frequencies

GnomAD3 genomes

AF:

0.000375

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00128

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000670

AC:

AN:

179154

Hom.:

AF XY:

0.0000316

AC XY:

AN XY:

94970

show subpopulations

Gnomad AFR exome

AF:

0.000719

Gnomad AMR exome

AF:

0.0000403

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:

0.0000364

AC:

AN:

1372668

Hom.:

Cov.:

AF XY:

0.0000282

AC XY:

AN XY:

674930

show subpopulations

Gnomad4 AFR exome

AF:

0.00100

Gnomad4 AMR exome

AF:

0.0000878

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000136

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000931

Gnomad4 OTH exome

AF:

0.0000881

GnomAD4 genome

AF:

0.000374

AC:

AN:

152310

Hom.:

Cov.:

AF XY:

0.000403

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.00127

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000352

Hom.:

Bravo

AF:

0.000378

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000421

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

Jun 17, 2024

The c.2467T>C (p.C823R) alteration is located in exon 18 (coding exon 18) of the SGSM2 gene. This alteration results from a T to C substitution at nucleotide position 2467, causing the cysteine (C) at amino acid position 823 to be replaced by an arginine (R). 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

0.20

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.25

CADD

Pathogenic

DANN

Uncertain

0.98

DEOGEN2

Benign

0.063

.;T;.

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.39

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.80

T;T;T

M_CAP

Benign

0.035

MetaRNN

Benign

0.35

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.69

.;N;N

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Pathogenic

0.86

PROVEAN

Benign

-1.8

N;N;.

REVEL

Benign

0.17

Sift

Benign

0.050

D;T;.

Sift4G

Uncertain

0.018

D;D;D

Polyphen

0.98

D;D;P

Vest4

0.80

MVP

0.47

MPC

0.42

ClinPred

0.076

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.60

gMVP

0.59

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.41

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.41

Position offset: -4

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