To confirm DNA-PKcs dependent phosphorylation of hnRNP A1 in MCF-10A (“normal”) and MCF-7 (tumor) human mammary epithelial cell lines, we performed 32P uptake experiments to evaluate overall hnRNP A1 phosphorylation following DNA-PKcs depletion (siRNA) or kinase inhibition (NU7026). This evidence concerns the gene PRKDC and neoplasm.