Oncomine analysis revealed that transcript levels of Plexin B1 were elevated in prostate cancer samples compared to normal prostate tissue in three independent microarray gene expression profiling studies (Magee et al, 2001; Lapointe et al, 2004; Wallace et al, 2008) (Appendix Fig S3B). The gene discussed is PLXNB1; the disease is prostate carcinoma.