Genetic Variant TBRG1:p.Val214Met (chr11-124626952-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_032811.3(TBRG1):c.640G>A(p.Val214Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000848 in 1,602,978 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V214A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000078 ( 1 hom. )

Consequence

TBRG1
NM_032811.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.05

Variant links:

Genes affected

TBRG1 (HGNC:29551): (transforming growth factor beta regulator 1) Involved in several processes, including DNA replication; protein localization to nucleoplasm; and protein stabilization. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

TBRG1 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 rank	MANE	Protein	UniProt
TBRG1	NM_032811.3 link	c.640G>A	p.Val214Met	missense_variant	Exon 5 of 9	ENST00000441174.8	NP_116200.2	Q3YBR2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBRG1	ENST00000441174.8 link	c.640G>A	p.Val214Met	missense_variant	Exon 5 of 9	1	NM_032811.3	ENSP00000409016.3		Q3YBR2-1

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152152

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000386

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000987

AC:

AN:

232978

Hom.:

AF XY:

0.000104

AC XY:

AN XY:

125104

show subpopulations

Gnomad AFR exome

AF:

0.000336

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000541

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000289

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000779

AC:

113

AN:

1450708

Hom.:

Cov.:

AF XY:

0.0000916

AC XY:

AN XY:

720266

show subpopulations

Gnomad4 AFR exome

AF:

0.000330

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000644

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000389

Gnomad4 OTH exome

AF:

0.0000833

GnomAD4 genome

AF:

0.000151

AC:

AN:

152270

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74440

show subpopulations

Gnomad4 AFR

AF:

0.000385

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000386

Hom.:

Bravo

AF:

0.000136

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000115

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 12, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.640G>A (p.V214M) alteration is located in exon 5 (coding exon 5) of the TBRG1 gene. This alteration results from a G to A substitution at nucleotide position 640, causing the valine (V) at amino acid position 214 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

Uncertain

0.39

BayesDel_addAF

Benign

-0.018

BayesDel_noAF

Uncertain

0.080

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.67

.;D

Eigen

Pathogenic

0.88

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Uncertain

0.95

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Uncertain

0.14

MetaRNN

Uncertain

0.63

D;D

MetaSVM

Uncertain

0.50

MutationAssessor

Pathogenic

3.3

.;M

PrimateAI

Uncertain

0.64

PROVEAN

Uncertain

-2.5

D;N

REVEL

Pathogenic

0.68

Sift

Uncertain

0.0020

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

.;D

Vest4

0.79

MVP

0.91

MPC

0.12

ClinPred

0.54

GERP RS

4.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.34

gMVP

0.61

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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