AUTHOR=López-Urrutia Eduardo , Padilla-Benavides Teresita , Pérez-Plasencia Carlos , Campos-Parra Alma D. TITLE=Editorial: Repurposed Drugs Targeting Cancer Signaling Pathways: Dissecting New Mechanism of Action Through In Vitro and In Vivo Analyses JOURNAL=Frontiers in Oncology VOLUME=11 YEAR=2021 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2021.773429 DOI=10.3389/fonc.2021.773429 ISSN=2234-943X