chr18-55461078-C-T

Position:

chr18-55461078-C-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BS2BP4

This summary comes from the ClinGen Evidence Repository: The highest population minor allele frequency of the p.Ser82Asn variant in TCF4 in gnomAD v2.1.1 is 0.00006 in African/African American population (not sufficient to meet BS1 criteria). The p.Ser82Asn variant is observed in at least 2 unaffected individuals (internal database - GeneDx and Invitae) (BS2). Computational analysis prediction tools suggest that the p.Ser82Asn variant does not have a deleterious impact; however this information does not predict clinical significance on its own (BP4). In summary, the p.Ser82Asn variant in TCF4 is classified as likely benign based on the ACMG/AMP criteria (BS2, BP4). (TCF4 specifications v.3; approved on 8/30/2024) LINK:https://erepo.genome.network/evrepo/ui/classification/CA8970611/MONDO:0012589/032

Frequency

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

Consequence

TCF4
NM_001083962.2 missense

Scores

Clinical Significance

Likely benign reviewed by expert panel U:1B:2

Conservation

PhyloP100: 1.05

Variant links:

Genes affected

TCF4 (HGNC:11634): (transcription factor 4) This gene encodes transcription factor 4, a basic helix-loop-helix transcription factor. The encoded protein recognizes an Ephrussi-box ('E-box') binding site ('CANNTG') - a motif first identified in immunoglobulin enhancers. This gene is broadly expressed, and may play an important role in nervous system development. Defects in this gene are a cause of Pitt-Hopkins syndrome. In addition, an intronic CTG repeat normally numbering 10-37 repeat units can expand to >50 repeat units and cause Fuchs endothelial corneal dystrophy. Multiple alternatively spliced transcript variants that encode different proteins have been described. [provided by RefSeq, Jul 2016]

TCF4 links:

TCF4-AS1 (HGNC:51642): (TCF4 antisense RNA 1)

TCF4-AS1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

For more information check the summary or visit ClinGen Evidence Repository.

BS2

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TCF4	NM_001083962.2 link	c.245G>A	p.Ser82Asn	missense_variant	5/20	ENST00000354452.8	NP_001077431.1	P15884-3B3KVA4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TCF4	ENST00000354452.8 link	c.245G>A	p.Ser82Asn	missense_variant	5/20	5	NM_001083962.2	ENSP00000346440.3		P15884-3

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152108

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250728

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135502

show subpopulations

Gnomad AFR exome

AF:

0.0000616

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152108

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74294

show subpopulations

Gnomad4 AFR

AF:

0.0000483

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:1Benign:2

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Pitt-Hopkins syndrome

Benign:2

Likely benign, reviewed by expert panel	curation	ClinGen Rett and Angelman-like Disorders Variant Curation Expert Panel	Aug 30, 2024	The highest population minor allele frequency of the p.Ser82Asn variant in TCF4 in gnomAD v2.1.1 is 0.00006 in African/African American population (not sufficient to meet BS1 criteria). The p.Ser82Asn variant is observed in at least 2 unaffected individuals (internal database - GeneDx and Invitae) (BS2). Computational analysis prediction tools suggest that the p.Ser82Asn variant does not have a deleterious impact; however this information does not predict clinical significance on its own (BP4). In summary, the p.Ser82Asn variant in TCF4 is classified as likely benign based on the ACMG/AMP criteria (BS2, BP4). (TCF4 specifications v.3; approved on 8/30/2024) -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 13, 2022	- -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Sep 17, 2019

In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.48

CADD

Benign

DANN

Benign

0.70

DEOGEN2

Benign

0.33

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

Eigen

Benign

-0.15

Eigen_PC

Benign

0.022

FATHMM_MKL

Benign

0.63

LIST_S2

Benign

0.78

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

M_CAP

Benign

0.0088

MetaRNN

Benign

0.10

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

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

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

PrimateAI

Uncertain

0.67

PROVEAN

Benign

0.040

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

REVEL

Benign

0.055

Sift

Benign

0.12

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

Sift4G

Benign

0.39

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

Polyphen

0.0, 0.72

.;B;.;.;.;B;.;.;.;.;.;.;.;.;.;.;.;.;P;.;.;.;.;.;.;.;.;.;.;.;.;.

Vest4

0.28

MutPred

0.12

.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;Loss of phosphorylation at S184 (P = 0.0295);.;.;.;.;.;.;.;.;.;.;.;.;.;

MVP

0.30

MPC

0.55

ClinPred

0.18

GERP RS

4.2

Varity_R

0.080

gMVP

0.15

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