chr16-1974398-C-T

Position:

• chr16-1974398-C-T

Variant summary

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

The NM_006453.3(TBL3):​c.212C>T​(p.Ala71Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: TBL3 NM_006453.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.65

Genes affected

TBL3 (HGNC:11587): (transducin beta like 3) 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 gene has multiple polyadenylation sites. It might have multiple alternatively spliced transcript variants but the variants have not been fully described yet. [provided by RefSeq, Jul 2008]

ACMG classification

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
TBL3	NM_006453.3	c.212C>T	p.Ala71Val	missense_variant	4/22	ENST00000568546.6	NP_006444.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TBL3	ENST00000568546.6	c.212C>T	p.Ala71Val	missense_variant	4/22	1	NM_006453.3	ENSP00000454836.1
TBL3	ENST00000561907.5	n.228C>T		non_coding_transcript_exon_variant	4/6	2		ENSP00000454735.1
TBL3	ENST00000569628.5	n.380C>T		non_coding_transcript_exon_variant	3/21	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 26, 2022

The c.212C>T (p.A71V) alteration is located in exon 4 (coding exon 4) of the TBL3 gene. This alteration results from a C to T substitution at nucleotide position 212, causing the alanine (A) at amino acid position 71 to be replaced by a valine (V). 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	0.14
BayesDel_addAF	Uncertain	0.022	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Benign	0.042	T
Eigen	Benign	-0.065
Eigen_PC	Benign	-0.077
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.070	D
MetaRNN	Uncertain	0.67	D
MetaSVM	Benign	-0.58	T
MutationAssessor	Uncertain	2.8	M
PrimateAI	Benign	0.45	T
PROVEAN	Benign	-1.8	N
Sift	Uncertain	0.026	D
Sift4G	Benign	0.17	T
Polyphen		0.63	P
Vest4		0.74
MutPred		0.48		Loss of disorder (P = 0.0748);
MVP		0.71
MPC		0.15
ClinPred		0.66	D
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.10
gMVP		0.59

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

LitVar

Other links and lift over

dbSNP: rs2083382542; hg19: chr16-2024399;