X-9688093-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_005647.4(TBL1X):c.434C>T(p.Thr145Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000331 in 1,209,918 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 8 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.000034 ( 0 hom. 8 hem. )

Consequence

TBL1X
NM_005647.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.42

Variant links:

Genes affected

TBL1X (HGNC:11585): (transducin beta like 1 X-linked) The protein encoded by this gene has sequence similarity with members of the WD40 repeat-containing protein family. The WD40 group is a large family of proteins, which appear to have a regulatory function. It is believed that the WD40 repeats mediate protein-protein interactions and members of the family are involved in signal transduction, RNA processing, gene regulation, vesicular trafficking, cytoskeletal assembly and may play a role in the control of cytotypic differentiation. This encoded protein is found as a subunit in corepressor SMRT (silencing mediator for retinoid and thyroid receptors) complex along with histone deacetylase 3 protein. This gene is located adjacent to the ocular albinism gene and it is thought to be involved in the pathogenesis of the ocular albinism with late-onset sensorineural deafness phenotype. Four transcript variants encoding two different isoforms have been found for this gene. This gene is highly similar to the Y chromosome TBL1Y gene. [provided by RefSeq, Nov 2008]

TBL1X links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.12903115).

BS2

High Hemizygotes in GnomAdExome4 at 8 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBL1X	NM_005647.4 link	c.434C>T	p.Thr145Met	missense_variant	Exon 7 of 18	ENST00000645353.2	NP_005638.1	O60907-1A0A024RBV9
TBL1X	NM_001139466.1 link	c.434C>T	p.Thr145Met	missense_variant	Exon 7 of 18		NP_001132938.1	O60907-1A0A024RBV9
TBL1X	NM_001139467.1 link	c.281C>T	p.Thr94Met	missense_variant	Exon 6 of 17		NP_001132939.1	O60907-2
TBL1X	NM_001139468.1 link	c.281C>T	p.Thr94Met	missense_variant	Exon 7 of 18		NP_001132940.1	O60907-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBL1X	ENST00000645353.2 link	c.434C>T	p.Thr145Met	missense_variant	Exon 7 of 18		NM_005647.4	ENSP00000496215.1		O60907-1

Frequencies

GnomAD3 genomes

AF:

0.0000267

AC:

AN:

112432

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000323

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000939

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000281

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000335

AC:

AN:

179352

AF XY:

0.0000154

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000110

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000379

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000337

AC:

AN:

1097432

Hom.:

Cov.:

AF XY:

0.0000220

AC XY:

AN XY:

362886

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26373

American (AMR)

AF:

0.0000853

AC:

AN:

35151

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19361

East Asian (EAS)

AF:

0.00

AC:

AN:

30172

South Asian (SAS)

AF:

0.00

AC:

AN:

54001

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40450

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4136

European-Non Finnish (NFE)

AF:

0.0000368

AC:

AN:

841726

Other (OTH)

AF:

0.0000651

AC:

AN:

46062

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000267

AC:

AN:

112486

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34654

show subpopulations

African (AFR)

AF:

0.0000322

AC:

AN:

31028

American (AMR)

AF:

0.0000938

AC:

AN:

10658

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2661

East Asian (EAS)

AF:

0.000282

AC:

AN:

3552

South Asian (SAS)

AF:

0.00

AC:

AN:

2697

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6196

Middle Eastern (MID)

AF:

0.00

AC:

AN:

219

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

53262

Other (OTH)

AF:

0.00

AC:

AN:

1527

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000302

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000346

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

May 06, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.434C>T (p.T145M) alteration is located in exon 7 (coding exon 4) of the TBL1X gene. This alteration results from a C to T substitution at nucleotide position 434, causing the threonine (T) at amino acid position 145 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

Benign

0.18

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.35

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.28

.;T;.;T;T;T;T;.;.

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.86

D;D;.;.;.;.;.;D;D

M_CAP

Benign

0.044

MetaRNN

Benign

0.13

T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.78

MutationAssessor

Uncertain

2.7

.;M;.;M;M;M;M;.;.

PhyloP100

5.4

PrimateAI

Pathogenic

0.88

PROVEAN

Benign

-1.0

N;N;N;N;.;.;.;.;.

REVEL

Benign

0.075

Sift

Benign

0.11

T;T;T;T;.;.;.;.;.

Sift4G

Benign

0.12

T;T;T;T;.;.;.;.;.

Polyphen

0.14

.;B;.;B;B;B;B;.;.

Vest4

0.68

MutPred

0.25

.;Gain of MoRF binding (P = 0.0696);.;Gain of MoRF binding (P = 0.0696);Gain of MoRF binding (P = 0.0696);Gain of MoRF binding (P = 0.0696);Gain of MoRF binding (P = 0.0696);.;.;

MVP

0.58

MPC

0.78

ClinPred

0.16

GERP RS

4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.11

gMVP

0.83

Mutation Taster

=94/6

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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X-9688093-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over