Characteristics of the study populations that evaluated the relationship between <i>TLR4</i> polymorphisms and risk of prostate cancer.

Abbreviations: PCa, prostate cancer; TNM, the tumor node metastases classification system; PSA, prostate specific antigen; GWAS, genome-wide association study; RLFP-PCR, restriction fragment length polymorphism-polymerase chain reaction. All studies met the following criteria and they were not listed in the table: (1) clear description of laboratory methods, (2) genotyping identical for cases and controls, (3) genotyping blinded to case control status, and (4) specimen came from peripheral blood sample. Characteristics of the study populations that evaluated the relationship between TLR4 polymorphisms and risk of prostate cancer.