Abstract
Abstract Objectives Immune checkpoint inhibitors are a new beneficial medication in the treatment of cancer. Whether preexisting TPOAb was related to longer overall survival (OS) is controversial. This retrospective study analyzed the OS and progression-free survival (PFS) of patients with lung cancer, and explored predictive factors associated with the efficacy of PD-1/PD-L1 inhibitors treatment. Methods Patients with lung cancer who were hospitalized in the First Affiliated Hospital of Wenzhou Medical University between January 1, 2020 and December 30, 2020 were enrolled. Thyroid function, TPOAb, TGAb, and prognostic nutritional index levels and body mass index were analyzed. Supervising physicians independently assessed patient staging, OS, and PFS. Demographic data, pathological type, and previous treatment history were also collected. Results In total, this study enrolled 69 patients, with ages of 46–80 years old. Patients with lower weight showed reduced OS and PFS rates relative to those with normal weight and overweight (p<0.05). The single patient with large cell neuroendocrine carcinoma (LCNEC) exhibited a 1-, 1.5- and 2-year OS rate lower than that of the patients diagnosed with squamous cell carcinoma, small cell lung cancer, or adenocarcinoma (p<0.05). This LCNEC patient also had lower 1-, 1.5-, and 2-year PFS rates compared to adenocarcinoma patients (p<0.05). TPOAb and TGAb levels were unrelated to OS or PFS. Multivariate Cox regression analyses revealed a positive association between body mass index, OS, and PFS. Conclusions Patients with lower body weight were predictive of poorer survival outcomes when receiving PD-1/PD-L1 inhibitors treatment as compared to patients with normal weight and overweight. However, positive baseline TGAb and TPOAb levels were not associated with increased OS or PFS in patients with lung cancer.
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