IL6R and nasopharyngeal carcinoma: Results in Figure 3A showed that 4 P-NPC cell lines and 1 subline derived from P-NPC released significantly higher amounts of IL-6Rα than 3 NPC cell lines from metastatic lesions did (609.5 ± 252.8 pg/ml versus 124.6 ± 90.1 pg/ml).