Eighteen cases of solid pseudopapillary neoplasms of the pancreas were evaluated for RNA expression levels of FLI1, DKK1, INPP5D (SHIP1), IGFBP3, PBK (TOPK), and BCL9 and BCL9L. The gene discussed is DKK1; the disease is Solid Pseudopapillary Neoplasm of the Pancreas.