19-1611736-C-T

Position:

chr19-1611736-C-T

Variant summary

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

The ENST00000262965.12(TCF3):c.1936G>A(p.Glu646Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000205 in 1,613,466 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

TCF3
ENST00000262965.12 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.69

Variant links:

Genes affected

TCF3 (HGNC:11633): (transcription factor 3) This gene encodes a member of the E protein (class I) family of helix-loop-helix transcription factors. E proteins activate transcription by binding to regulatory E-box sequences on target genes as heterodimers or homodimers, and are inhibited by heterodimerization with inhibitor of DNA-binding (class IV) helix-loop-helix proteins. E proteins play a critical role in lymphopoiesis, and the encoded protein is required for B and T lymphocyte development. Deletion of this gene or diminished activity of the encoded protein may play a role in lymphoid malignancies. This gene is also involved in several chromosomal translocations that are associated with lymphoid malignancies including pre-B-cell acute lymphoblastic leukemia (t(1;19), with PBX1), childhood leukemia (t(19;19), with TFPT) and acute leukemia (t(12;19), with ZNF384). Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and a pseudogene of this gene is located on the short arm of chromosome 9. [provided by RefSeq, Sep 2011]

TCF3 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/exons	MANE	Protein	UniProt
TCF3	NM_003200.5 linkuse as main transcript	c.1936G>A	p.Glu646Lys	missense_variant	19/19	ENST00000262965.12	NP_003191.1
TCF3	NM_001136139.4 linkuse as main transcript	c.1927G>A	p.Glu643Lys	missense_variant	19/20	ENST00000588136.7	NP_001129611.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TCF3	ENST00000262965.12 linkuse as main transcript	c.1936G>A	p.Glu646Lys	missense_variant	19/19	1	NM_003200.5	ENSP00000262965	A1	P15923-1
TCF3	ENST00000588136.7 linkuse as main transcript	c.1927G>A	p.Glu643Lys	missense_variant	19/20	2	NM_001136139.4	ENSP00000468487	P3	P15923-2

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152044

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

250362

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

135576

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:

0.0000266

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000219

AC:

AN:

1461422

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

727004

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000261

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152044

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74260

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000530

Hom.:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 14, 2023

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 646 of the TCF3 protein (p.Glu646Lys). This variant is present in population databases (rs375296938, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with TCF3-related conditions. ClinVar contains an entry for this variant (Variation ID: 1491945). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt TCF3 protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.40

BayesDel_addAF

Benign

-0.0020

BayesDel_noAF

Benign

-0.13

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.69

D;T;T;D;T;T;.;.;.

Eigen

Benign

0.034

Eigen_PC

Benign

-0.0051

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.99

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

M_CAP

Benign

0.037

MetaRNN

Uncertain

0.57

D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.93

MutationAssessor

Benign

1.0

L;.;.;L;.;.;.;.;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.51

PROVEAN

Uncertain

-2.9

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

REVEL

Benign

0.28

Sift

Uncertain

0.0030

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

Sift4G

Benign

0.069

T;T;T;T;D;T;T;T;D

Polyphen

0.96

P;.;.;P;.;.;.;D;.

Vest4

0.35

MVP

0.53

MPC

0.13

ClinPred

0.81

GERP RS

3.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.2

Varity_R

0.31

gMVP

0.56

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