AUTHOR= Frontiers Editorial Office TITLE=Retraction: ECT2 Increases the Stability of EGFR and Tumorigenicity by Inhibiting Grb2 Ubiquitination in Pancreatic Cancer JOURNAL=Frontiers in Oncology VOLUME=11 YEAR=2021 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2021.734761 DOI=10.3389/fonc.2021.734761 ISSN=2234-943X