An Indian study group checked whether the ethanolic extract of Gonolobus condurango Condurango 30C was capable of arresting the cell cycles in HeLa cervical cancer cells and underlined that this homeopathically-diluted anti-cancer remedy induced cytotoxicity in vitro, reduced DNA synthesis, promoted G1-phase cell-cycle arrest, as well as downregulated HDAC2 activity [124]. Here, HDAC2 is linked to cancer.