An initial screen included a bladder cancer panel with 16 proteins (MCP‐1, MIP‐1α, MIP‐1β, IP‐10, IFN‐α, IL‐1α, IL‐1RA, IL‐8, IL‐7, IL‐31, IL‐15, TNF‐β, Eotaxin, SDF‐1α, Rantes, and GRO). This evidence concerns the gene IL31 and urinary bladder carcinoma.