There are multiple definitions:

1. T-cell factor(English)

   • e.g. TCF-4; a transcription factor
   • LEF, TCF-4, LEF/TCF
   • Transcription, Immunology, Infection, Oncology
   • https://doi.org…lip.2015.02.003

2. target capture fraction(English)

   • the specific subset of a DNA library isolated via hybridization probes (such as cancer-specific or panel-targeted regions) to enrich informative sequences before sequencing
   • CFE, ICFR, MAD, MEA, PSS, TCGF, TECA
   • Genomics, Biochemistry

3. total body irradiation, cyclophosphamide, and fludarabine(English)

   • Chemotherapy, Radiotherapy /radiation