Genetic Variant TOB2:p.Gln335Leu (chr22-41436342-T-A) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_016272.4(TOB2):c.1004A>T(p.Gln335Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000345 in 1,596,452 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000037 ( 0 hom. )

Consequence

TOB2
NM_016272.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.67

Variant links:

Genes affected

TOB2 (HGNC:11980): (transducer of ERBB2, 2) TOB2 belongs to the TOB (see TOB1; MIM 605523)/BTG1 (MIM 109580) family of antiproliferative proteins, which are involved in the regulation of cell cycle progression.[supplied by OMIM, Apr 2004]

TOB2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.78

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TOB2	NM_016272.4 link	c.1004A>T	p.Gln335Leu	missense_variant	Exon 2 of 2	ENST00000327492.4	NP_057356.1	Q14106-1
TOB2	XM_005261315.3 link	c.1004A>T	p.Gln335Leu	missense_variant	Exon 2 of 2		XP_005261372.1	Q14106-1
TOB2	XM_006724105.4 link	c.1004A>T	p.Gln335Leu	missense_variant	Exon 2 of 2		XP_006724168.1	Q14106-1
TOB2	XM_017028539.2 link	c.1004A>T	p.Gln335Leu	missense_variant	Exon 2 of 2		XP_016884028.1	Q14106-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TOB2	ENST00000327492.4 link	c.1004A>T	p.Gln335Leu	missense_variant	Exon 2 of 2	1	NM_016272.4	ENSP00000331305.3		Q14106-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152238

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000127

AC:

AN:

236236

Hom.:

AF XY:

0.0000158

AC XY:

AN XY:

126842

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:

0.0000281

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000367

AC:

AN:

1444096

Hom.:

Cov.:

AF XY:

0.0000265

AC XY:

AN XY:

716416

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:

0.0000120

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000472

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152356

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74506

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.0000294

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 17, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1004A>T (p.Q335L) alteration is located in exon 2 (coding exon 1) of the TOB2 gene. This alteration results from a A to T substitution at nucleotide position 1004, causing the glutamine (Q) at amino acid position 335 to be replaced by a leucine (L). 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

0.48

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Uncertain

0.12

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.62

Eigen

Pathogenic

0.80

Eigen_PC

Pathogenic

0.80

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

M_CAP

Benign

0.081

MetaRNN

Pathogenic

0.78

MetaSVM

Benign

-0.37

MutationAssessor

Uncertain

2.6

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-3.8

REVEL

Uncertain

0.51

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0070

Polyphen

0.99

Vest4

0.69

MutPred

0.48

Loss of disorder (P = 0.0528);

MVP

0.41

MPC

1.0

ClinPred

0.97

GERP RS

5.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.70

gMVP

0.71

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