CXCL13 and bladder transitional cell carcinoma: Pan-cancer prognostic analyses indicated that CXCL13 was associated with better survival in BLCA, BRCA, HNSC, LUSC, OV, SKCM, and UCEC but a worse prognosis for GBM, KIRC, KIRP, and THYM by using Kaplan-Meier method and univariate cox regression analysis.