In addition, co-expression of PDGF-AA and PDGF α-receptor in the epithelial part of Wilms' tumor of the kidney is common; in contrast to other tumors with autocrine PDGF stimulation, the expression of PDGF-A and PDGF α-receptor in Wilms' tumor correlates to favorable prognosis (38). This evidence concerns the gene PDGFA and Nephroblastoma.