We are grateful to Dr. Michael Birrer (Dana-Farber/Harvard Cancer Center) and Dr. Charles Vinson (NIH/NCI) for providing the AP-1 mutants; Dr. Marc Montminy (Salk Institute) for providing the CREB mutant; Dr. Joan Massagué (Memorial Sloan-Kettering Cancer Center) for providing ATF3 constructs; and Dr. Alejandro Sweet-Cordero (Stanford University) for providing the WT1 constructs. This evidence concerns the gene ATF3 and cancer.