Similarly, DKK3 (also known as REIC, reduced expression in immortalized cells) gene amplification and homozygous deletion are also infrequent events in prostate cancer (0.2–1.5% and 0.2–0.6% incidence, respectively) (Tables S1–S4) [64,65,66]. The gene discussed is DKK3; the disease is prostate carcinoma.