This paper is retracted at the author's request. Reference: 1. Lihong Zheng, Ruimei Jia, Juan Zhao: Dexmedetomidine Regulates Proliferation, Apoptosis, Migration, and Invasion in Ovarian Cancer Cells via MiR-155-HIF-1alpha Axis. Med Sci Monit, 2019; 25: 10164-10172. DOI: 10.12659/MSM.919112.