We wish to thank Constance Griffin, MD, Raluca Yonescu, MD, and Laura Morsberger of the Cytogenetics Core Facility, Johns Hopkins Cancer Center for the Cytogenetics and FISH analyses, Lee Blosser and Ada Tam of the Johns Hopkins Flow Cytometry Core for the FACS sorting, and Dr. Angelo De Marzo and Jessica Hicks of the Johns Hopkins Cancer Center Histology Core for the AR, PSA, p63, Nkx 3.1, and CK5 immunostaining. The gene discussed is KRT5; the disease is cancer.