The Six1 homeoprotein stimulates tumorigenesis by reactivation of cyclin A1. Coletta RD, Christensen K, Reichenberger KJ, et al. The Six1 homeoprotein stimulates tumorigenesis by reactivation of cyclin A1. Proc Natl Acad Sci U S A. 2004;101(17):6478-83. doi:10.1073/pnas.0401139101 Read more