FAS and neoplasm: For example, the Fas cell surface death receptor is related to apoptosis,31 activating T cell killing,32 and resistance in tumor-immune conflict in colorectal cancer,33 while the BCL2-associated X, an apoptosis regulator, is key to apoptosis34 and p53 transcription pathways in lung cancer35 and also correlates with chemoresistance to cisplatin.36