HBP1 and nasopharyngeal carcinoma: The blast results of HBP1 cDNA cloned from NP69, HNE1, HK1, and CNE2 cell lines (Fig. S1e) further confirmed that there is no mutation for HBP1 in NPC cells via the NCBI Web Blast Tool (https://blast.ncbi.nlm.nih.gov/Blast.cgi) (data not shown).