Zhong et al. used GoldMag nanoparticles as an MRI contrast agent coupled with the anti-epithelial cell adhesion molecule (EpCAM) DNA aptamers Eppc6 and Eppc14, which enhanced specific binding to EpCAM-positive prostate cancer cell lines and significantly reduced tumor signal intensity upon T2-weighted imaging [108]. The gene discussed is EPCAM; the disease is Familial prostate cancer.