In esophageal squamous cell carcinoma (HR = 0.28,P  = 0.0033), head-neck squamous cell carcinoma (HR = 0.68,P  = 0.0066), rectum adenocarcinoma (HR = 0.45,P  = 0.041), stomach adenocarcinoma (HR = 0.61,P  = 0.0071), and thymoma (HR = 0.09,P  = 0.00034), higher levels of TCF3 expression were associated with more favorable patient prognoses. Here, TCF3 is linked to thymoma.