Clinical Effect of Treatment with Metformin for Type 2 Diabetes on Non-Small Cell Lung Cancer Patients Undergoing Immunotherapy: A Retrospective Study.
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Abstract
Purpose: To further identify the clinical impact of metformin on the prognosis of non-small cell lung cancer (NSCLC) with type 2 diabetes who received immunotherapy.
Methods: Stage IV NSCLC patients with type 2 diabetes receiving the immunotherapy from 2017 to 2021 were retrospectively enrolled and divided into the metformin group or non-metformin group according to the treatment strategy for type 2 diabetes (metformin vs other hypoglycemic medicines). The overall response rate (ORR) was primary endpoint, and overall survival (OS), progression-free survival (PFS) and disease control rate (DCR) were secondary endpoints. These outcomes were compared between two groups.
Results: A total of 34 patients were eventually enrolled, including 18 patients in the metformin group. No significant differences in the basic characteristics and incidence of adverse events were observed between two groups. In addition, there was no significant difference in ORR (44.4%, 8/18 vs 25.0%, 4/16, P = 0.236) and DCR (77.8%, 14/18 vs 75.0%, 12/16, P > 0.999) between the metformin and non-metformin groups. Kaplan-Meier survival curve (P = 0.039) and Cox regression analysis indicated that the use of metformin was an independent factor for OS (HR: 0.310, 95% CI: 0.113-0.845, P = 0.022), but not for PFS (Cox regression analysis: P = 0.145).
Conclusion: For NSCLC patients with type 2 diabetes, the combination of metformin and immunotherapy may contribute to OS benefits. However, more high-quality prospective studies with big sample sizes are needed to further clarify the effect of metformin use on the efficacy of immunotherapy in advanced NSCLC patients with diabetes.
期刊介绍：
The International Journal of General Medicine is an international, peer-reviewed, open access journal that focuses on general and internal medicine, pathogenesis, epidemiology, diagnosis, monitoring and treatment protocols. The journal is characterized by the rapid reporting of reviews, original research and clinical studies across all disease areas.
A key focus of the journal is the elucidation of disease processes and management protocols resulting in improved outcomes for the patient. Patient perspectives such as satisfaction, quality of life, health literacy and communication and their role in developing new healthcare programs and optimizing clinical outcomes are major areas of interest for the journal.
As of 1st April 2019, the International Journal of General Medicine will no longer consider meta-analyses for publication.
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