Regarding clinical samples, Zhang et al. performed label-based quantitative proteomics (TMTs) on sera of 44 NPC patients, identifying serpin family D member 1 (SERPIND1), complement C4B, secreted protein acidic and rich in cysteine (SPARC), peptidyl-prolyl cis-trans isomerase B (PPIB), and family with sequence similarity 173 member A (FAM173A) as proteins able to discriminate between radiosensitive and radioresistant groups [136]. This evidence concerns the gene PPIB and nasopharyngeal carcinoma.