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). Here, IL7 is linked to urinary bladder carcinoma.