In our previous publication, we generated and extensively characterized NPCs that were used in this study including HTT gene expression and mHTT protein aggregates.22 In order to confirm the phenotype, HD-shHD-NPC cells were subjected to Zeocin selection (100 μg/mL), and the suppression of HTT expression was confirmed by using qRT-PCR before the surgery (Fig. 1a). The gene discussed is HTT; the disease is nasopharyngeal carcinoma.