Moreover, the total lymphocyte count (p = 0.0420; Figure S4), levels of prealbumin (p = 0.0039, Figure S4) and albumin (p = 0.0087, Figure S4), and B-cell count (p = 0.0026, Figure S4) were significantly higher in ESCC patients with non-PD responses than in those with PD. Here, TTR is linked to esophageal squamous cell carcinoma.