TCF7 p.Gly256Arg

Variant names:

• chr5-134144832-G-C
• ENST00000378560.8:c.766G>C
• TCF7 p.Gly256Arg

Your query was ambiguous. Multiple possible variants found:

• chr5-134144832-G-C
• chr5-134144832-GGC-CGT
• chr5-134144832-GGC-CGA
• chr5-134144832-GGC-CGG
• chr5-134144832-GGC-AGA
• chr5-134144832-GGC-AGG

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PP3_Moderate BS2

The NM_201634.5(TCF7):​c.766G>C​(p.Gly256Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,868 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: not found (cov: 33)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: TCF7 NM_201634.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 10.0
• 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: Likely_benign. The variant received -2 ACMG points.

• PP3: MetaRNN computational evidence supports a deleterious effect, 0.844
• BS2: High AC in GnomAdExome4 at 9 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_201634.5. 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.1075+1192G>C		intron	N/A	NP_003193.2
	TCF7	NM_201634.5		c.766G>C	p.Gly256Arg	missense	Exon 9 of 10	NP_963965.1	P36402-8
	TCF7	NM_001346425.2		c.1168+1192G>C		intron	N/A	NP_001333354.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TCF7	ENST00000378560.8	TSL:1	c.766G>C	p.Gly256Arg	missense	Exon 9 of 10	ENSP00000367822.4	P36402-8
	TCF7	ENST00000342854.10	TSL:1 MANE Select	c.1075+1192G>C		intron	N/A	ENSP00000340347.5	P36402-5
	TCF7	ENST00000395023.5	TSL:1	c.730+1192G>C		intron	N/A	ENSP00000378469.1	P36402-6

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461868 Hom.: 0 Cov.: 30 AF XY: 0.00000825 AC XY: 6 AN XY: 727242

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

American (AMR) AF: 0.00 AC: 0 AN: 44720

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

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

European-Non Finnish (NFE) AF: 0.00000809 AC: 9 AN: 1111994

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.16
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.42	T
Eigen	Pathogenic	0.89
Eigen_PC	Pathogenic	0.91
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Uncertain	0.17	D
MetaRNN	Pathogenic	0.84	D
MetaSVM	Pathogenic	1.1	D
PhyloP100		10
PROVEAN	Pathogenic	-4.4	D
REVEL	Uncertain	0.58
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Mutation Taster		=29/71	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.17		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

hg19: chr5-133480523;