Variant 17-2362242-G-T 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.430G>T(p.Val144Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,058 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

SGSM2
NM_014853.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.85

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:

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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/exons	MANE	Protein	UniProt
SGSM2	NM_014853.3 linkuse as main transcript	c.430G>T	p.Val144Phe	missense_variant	4/24	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.430G>T	p.Val144Phe	missense_variant	4/24	1	NM_014853.3	ENSP00000268989	P4	O43147-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000400

AC:

AN:

250146

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135186

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461058

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726878

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

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

Jul 19, 2023

The c.430G>T (p.V144F) alteration is located in exon 4 (coding exon 4) of the SGSM2 gene. This alteration results from a G to T substitution at nucleotide position 430, causing the valine (V) at amino acid position 144 to be replaced by a phenylalanine (F). 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

Uncertain

0.52

BayesDel_addAF

Benign

-0.017

BayesDel_noAF

Benign

-0.17

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

.;T;.;T

Eigen

Benign

-0.18

Eigen_PC

Benign

-0.15

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.92

D;D;D;D

M_CAP

Benign

0.028

MetaRNN

Uncertain

0.52

D;D;D;D

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.90

L;L;L;.

MutationTaster

Benign

0.99

D;D;D

PrimateAI

Uncertain

0.60

PROVEAN

Uncertain

-3.0

D;D;.;.

REVEL

Benign

0.27

Sift

Uncertain

0.0010

D;D;.;.

Sift4G

Pathogenic

0.0010

D;D;D;D

Polyphen

0.63

P;P;P;.

Vest4

0.72

MutPred

0.59

Gain of ubiquitination at K143 (P = 0.0846);Gain of ubiquitination at K143 (P = 0.0846);Gain of ubiquitination at K143 (P = 0.0846);.;

MVP

0.41

MPC

0.32

ClinPred

0.68

GERP RS

2.6

Varity_R

0.51

gMVP

0.74

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

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