A nucleic acid probe or a set of such probes in a microarray is provided. The probe or probe set is used for the prognosis of patients with papillary cell renal cell carcinoma (PRCC), wherein aggressive and non-aggressive PRCC tumor types are characterized by differential expression profiles of genes that hybridize with one or more of these probes. Microarrays and kits for carrying out expression profiling of tumor tissue and methods of using them are disclosed.
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