TCF21 and Nephroblastoma: To accomplish this we determined the Pearson correlation coefficient (PCC) between the normalized expression of TCF21 and all genes individually on the Affymetrix U133+2.0 array within 76 TARGET favorable histology Wilms tumors (available on the TARGET Data Matrix: http://www.target.nci.nih.gov/dataMatrix/TARGET_DataMatrix.html), and identified those genes with a PCC ≥ 0.5 or ≤ −0.5.