Due to a production error, the title was incorrectly written as “Metformin Downregulates PD-L1 Expression in Esophageal Squamous Cell Catrcinoma by Inhibiting IL-6 Signaling Pathway”. The correct title is “Metformin Downregulates PD-L1 Expression in Esophageal Squamous Cell Carcinoma by Inhibiting IL-6 Signaling Pathway”.

The publisher apologizes for this mistake.

The original version of this article has been updated.

Keywords: metformin, PD-L1, anti-PD-1 antibody, esophageal squamous cell carcinoma, IL-6/JAK2/STAT3 signaling pathway

Citation: Frontiers Production Office (2021) Erratum: Metformin Downregulates PD-L1 Expression in Esophageal Squamous Cell Carcinoma by Inhibiting IL-6 Signaling Pathway. Front. Oncol. 11:832786. doi: 10.3389/fonc.2021.832786

Received: 10 December 2021; Accepted: 10 December 2021;
Published: 29 December 2021.

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