TCF4 (Transcription Factor 4, TCF-4, Class B Basic Helix-loop-helix Protein 19, bHLHb19, Immunoglobulin Transcription Factor 2, ITF-2, SEF-2, SL3-3 Enhancer Factor 2, BHLHB19, ITF2, SEF2, MGC149723, MGC149724) (APC)