ENST00000518915.5:c.766G>C

Variant names:

• chr5-134145776-G-C
• rs30489
• ENST00000518915.5:c.766G>C
• TCF7 p.Gly256Arg

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The ENST00000518915.5(TCF7):​c.766G>C​(p.Gly256Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,572 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/18 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: TCF7 ENST00000518915.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.241
• Publications: 0 publications found

Genes affected

TCF7 (HGNC:11639): (transcription factor 7) This gene encodes a member of the T-cell factor/lymphoid enhancer-binding factor family of high mobility group (HMG) box transcriptional activators. This gene is expressed predominantly in T-cells and plays a critical role in natural killer cell and innate lymphoid cell development. The encoded protein forms a complex with beta-catenin and activates transcription through a Wnt/beta-catenin signaling pathway. Mice with a knockout of this gene are viable and fertile, but display a block in T-lymphocyte differentiation. Alternative splicing results in multiple transcript variants. Naturally-occurring isoforms lacking the N-terminal beta-catenin interaction domain may act as dominant negative regulators of Wnt signaling. [provided by RefSeq, Oct 2016]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08464247).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000518915.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TCF7	NM_003202.5	MANE Select	c.1076-448G>C		intron	N/A	NP_003193.2
	TCF7	NM_001134851.4		c.766G>C	p.Gly256Arg	missense	Exon 9 of 9	NP_001128323.2	P36402-2
	TCF7	NM_001346425.2		c.1169-448G>C		intron	N/A	NP_001333354.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TCF7	ENST00000518915.5	TSL:1	c.766G>C	p.Gly256Arg	missense	Exon 9 of 9	ENSP00000430179.1	P36402-2
	TCF7	ENST00000342854.10	TSL:1 MANE Select	c.1076-448G>C		intron	N/A	ENSP00000340347.5	P36402-5
	TCF7	ENST00000395023.5	TSL:1	c.731-448G>C		intron	N/A	ENSP00000378469.1	P36402-6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461572 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727066

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44688

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86238

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53386

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111812

Other (OTH) AF: 0.00 AC: 0 AN: 60370

GnomAD4 genome Cov.: 32

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.095	D
BayesDel_noAF	Benign	-0.10
CADD	Benign	0.43
DANN	Uncertain	0.99
Eigen	Benign	-0.99
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.31	T
M_CAP	Uncertain	0.14	D
MetaRNN	Benign	0.085	T
MetaSVM	Uncertain	0.53	D
PhyloP100		-0.24
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.19
Sift	Pathogenic	0.0	D
Sift4G	Benign	0.15	T
Mutation Taster		=100/0	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		Details are displayed if max score is > 0.2

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs30489;

hg19: chr5-133481467;