Genetic Variant TCF7L1:p.Gln3* (chr2-85133691-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_031283.3(TCF7L1):c.7C>T(p.Gln3*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000707 in 141,404 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000071 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

TCF7L1
NM_031283.3 stop_gained

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0800

Publications

0 publications found

Variant links:

Genes affected

TCF7L1 (HGNC:11640): (transcription factor 7 like 1) This gene encodes a member of the T cell factor/lymphoid enhancer factor family of transcription factors. These transcription factors are activated by beta catenin, mediate the Wnt signaling pathway and are antagonized by the transforming growth factor beta signaling pathway. The encoded protein contains a high mobility group-box DNA binding domain and participates in the regulation of cell cycle genes and cellular senescence. [provided by RefSeq, Nov 2010]

TCF7L1 links:

ENSG00000300535 (HGNC:):

ENSG00000300535 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 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
TCF7L1	NM_031283.3 link	c.7C>T	p.Gln3*	stop_gained	Exon 1 of 12	ENST00000282111.4	NP_112573.1	Q9HCS4
TCF7L1	XM_006712109.3 link	c.7C>T	p.Gln3*	stop_gained	Exon 1 of 12		XP_006712172.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TCF7L1	ENST00000282111.4 link	c.7C>T	p.Gln3*	stop_gained	Exon 1 of 12	1	NM_031283.3	ENSP00000282111.3		Q9HCS4
ENSG00000300535	ENST00000772607.1 link	n.233+610G>A		intron_variant	Intron 1 of 1

Frequencies

GnomAD3 genomes

AF:

0.00000708

AC:

AN:

141312

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000258

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

856866

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

399454

African (AFR)

AF:

0.00

AC:

AN:

16362

American (AMR)

AF:

0.00

AC:

AN:

1864

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

5898

East Asian (EAS)

AF:

0.00

AC:

AN:

4962

South Asian (SAS)

AF:

0.00

AC:

AN:

17398

European-Finnish (FIN)

AF:

0.00

AC:

AN:

4128

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1782

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

775634

Other (OTH)

AF:

0.00

AC:

AN:

28838

GnomAD4 genome

AF:

0.00000707

AC:

AN:

141404

Hom.:

Cov.:

AF XY:

0.0000146

AC XY:

AN XY:

68698

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000258

AC:

AN:

38788

American (AMR)

AF:

0.00

AC:

AN:

14486

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3336

East Asian (EAS)

AF:

0.00

AC:

AN:

4982

South Asian (SAS)

AF:

0.00

AC:

AN:

4654

European-Finnish (FIN)

AF:

0.00

AC:

AN:

7822

Middle Eastern (MID)

AF:

0.00

AC:

AN:

282

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

64282

Other (OTH)

AF:

0.00

AC:

AN:

1952

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.46

BayesDel_noAF

Pathogenic

0.42

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Uncertain

0.38

Eigen_PC

Benign

0.031

FATHMM_MKL

Benign

0.022

PhyloP100

-0.080

Vest4

0.38

GERP RS

2.4

PromoterAI

0.0031

Neutral

(source)

Mutation Taster

=36/164

disease causing (fs/PTC)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over