article_metadata: Xiangrong Zhao Yuehong Kong Liyuan Zhang
article_metadata: 10.3389/fonc.2020.01625
article_metadata: Front Oncol
article_metadata: 2020 Sep 2;10:1625.
article_metadata: gm-csf pd-l1 esophageal squamous cell carcinoma immunotherapy radiotherapy
article_metadata: CC BY
article_metadata: https://pubmed.ncbi.nlm.nih.gov/33014817/
article_metadata: Case Reports
article_metadata: PMC7493754
article_metadata: 33014817
article_metadata: Anti-PD-1 Immunotherapy Combined With Stereotactic Body Radiation Therapy and GM-CSF as Salvage Therapy in a PD-L1-Negative Patient With Refractory Metastatic Esophageal Squamous Cell Carcinoma: A Case Report and Literature Review
article_metadata: 2020