AUTHOR=Pérez-Plasencia Carlos , Padilla-Benavides Teresita , López-Urrutia Eduardo , Campos-Parra Alma D. TITLE=Editorial: Repurposed Drugs Targeting Cancer Signaling Pathways: Clinical Insights to Improve Oncologic Therapies JOURNAL=Frontiers in Oncology VOLUME=11 YEAR=2021 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2021.713040 DOI=10.3389/fonc.2021.713040 ISSN=2234-943X