Survival and univariate Cox regression analyses showed that NPC patients with higher LIFR expression (LIFR score ≥ 160) in tumors have significantly poorer metastasis-free survival (p = 0.005, log-rank test) and recurrence-free survival (p = 0.015, log-rank test) (Fig. 1e) vs. patients with lower LIFR levels in tumors. Here, LIFR is linked to nasopharyngeal carcinoma.