TLR3 and cancer: We excluded 50 studies based on the information presented in the title or abstract (17 were irrelevant articles, 16 were functional studies rather than polymorphism studies, and 17 were review articles) and 91 studies based on the information presented in the text (5 were not case-control studies, 62 were not about TLR3 gene polymorphisms, and 24 were not relevant to cancer).