5-134144832-GGC-CGA

Variant names:

• chr5-134144832-GGC-CGA
• ENST00000378560.8:c.766_768delGGCinsCGA
• TCF7 p.Gly256Arg

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3

The NM_201634.5(TCF7):​c.766_768delGGCinsCGA​(p.Gly256Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• 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: Uncertain_significance. The variant received 1 ACMG points.

• PP3: No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

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+1192_1075+1194delGGCinsCGA		intron	N/A	NP_003193.2
	TCF7	NM_201634.5		c.766_768delGGCinsCGA	p.Gly256Arg	missense	N/A	NP_963965.1	P36402-8
	TCF7	NM_001346425.2		c.1168+1192_1168+1194delGGCinsCGA		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.766_768delGGCinsCGA	p.Gly256Arg	missense	N/A	ENSP00000367822.4	P36402-8
	TCF7	ENST00000342854.10	TSL:1 MANE Select	c.1075+1192_1075+1194delGGCinsCGA		intron	N/A	ENSP00000340347.5	P36402-5
	TCF7	ENST00000395023.5	TSL:1	c.730+1192_730+1194delGGCinsCGA		intron	N/A	ENSP00000378469.1	P36402-6

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		10

Splicing

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;