Genetic Variant DRG2:p.Ala135Ser (chr17-18099659-G-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001388.5(DRG2):c.403G>T(p.Ala135Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000146 in 1,607,140 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 0.00013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

DRG2
NM_001388.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.88

Variant links:

Genes affected

DRG2 (HGNC:3030): (developmentally regulated GTP binding protein 2) This gene encodes a GTP-binding protein known to function in the regulation of cell growth and differentiation. Read-through transcripts containing this gene and a downstream gene have been identified, but they are not thought to encode a fusion protein. This gene is located within the Smith-Magenis syndrome region on chromosome 17. [provided by RefSeq, Jan 2012]

DRG2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.27281275).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DRG2	NM_001388.5 link	c.403G>T	p.Ala135Ser	missense_variant	Exon 5 of 13	ENST00000225729.8	NP_001379.1	P55039

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DRG2	ENST00000225729.8 link	c.403G>T	p.Ala135Ser	missense_variant	Exon 5 of 13	1	NM_001388.5	ENSP00000225729.3		P55039

Frequencies

GnomAD3 genomes

AF:

0.000131

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

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:

0.000265

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000593

AC:

AN:

236156

Hom.:

AF XY:

0.0000627

AC XY:

AN XY:

127594

show subpopulations

Gnomad AFR exome

AF:

0.0000668

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:

0.000122

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000147

AC:

214

AN:

1454916

Hom.:

Cov.:

AF XY:

0.000133

AC XY:

AN XY:

722934

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.000172

Gnomad4 OTH exome

AF:

0.000366

GnomAD4 genome

AF:

0.000131

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.0000482

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:

0.000265

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000158

Hom.:

Bravo

AF:

0.000174

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000825

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 11, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.403G>T (p.A135S) alteration is located in exon 5 (coding exon 5) of the DRG2 gene. This alteration results from a G to T substitution at nucleotide position 403, causing the alanine (A) at amino acid position 135 to be replaced by a serine (S). 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

-0.16

BayesDel_noAF

Benign

-0.23

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.050

T;T;T

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.97

D;D;D

M_CAP

Benign

0.042

MetaRNN

Benign

0.24

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

L;.;.

PrimateAI

Uncertain

0.69

PROVEAN

Benign

-1.5

N;N;.

REVEL

Benign

0.19

Sift

Benign

0.33

T;T;.

Sift4G

Benign

0.71

T;T;T

Polyphen

0.69

P;P;.

Vest4

0.71

MVP

0.31

MPC

0.81

ClinPred

0.097

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.10

gMVP

0.60

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

Other links and lift over