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Background: Bevacizumab is extensively used in the treatment of advanced non-small-cell lung cancer (NSCLC). Numerous clinical trials have proven the clinical efficacies of bevacizumab biosimilars (BB). Objective: Our study aimed to compare the clinical outcomes between bevacizumab reference product (RP) and BB among advanced NSCLC patients in a real-world setting. Design: We retrospectively analyzed stage IV metastatic NSCLC patients who were treated with bevacizumab as part of a combination therapy. Patients were categorized into chemotherapy (CT) and epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI) groups. We compared the patients’ characteristics, treatment efficacy, and adverse events between RP and BB in the two treatment groups. Methods: From January 2020 to July 2022, a total of 171 patients who underwent combination therapy with bevacizumab were screened. Seventy-nine of these patients met the study’s inclusion criteria and were enrolled in the final analysis. We utilized the Kaplan–Meier method to estimate progression-free survival (PFS) and the log-rank test to compare PFS between groups. The Cox proportional hazards model was used to identify predictors of PFS. Results: Within the CT cohort, 34 patients were treated with RP in combination with platinum and pemetrexed, and 25 patients received a combination regimen with BB. The median PFS was 6.9 months in the RP group and 8.9 months in the BB group ( p = 0.255). Within the EGFR-TKI cohort, 20 patients with EGFR -mutant NSCLC received first-line treatment with EGFR-TKI plus bevacizumab. Of these patients, 9 were treated with a combination regimen that included RP, and 11 patients received EGFR-TKI in combination with BB. The median PFS was 18.4 months for the RP group and 13.6 months for the BB group ( p = 0.363). Conclusion: In our advanced NSCLC patients, we found no difference in clinical outcomes when receiving treatment with RP or BB. Given a combination regimen, BB was as effective as RP together with either CT or EGFR-TKIs.

Background: Patients with advanced epidermal growth factor receptor ( EGFR )-mutant lung adenocarcinoma (LAD) inevitably experience drug resistance following treatment with EGFR-tyrosine kinase inhibitors (TKIs). Objectives: We aimed to analyze the effect of primary tumor consolidative therapy (PTCT) on patients treated with first-line osimertinib. Design and methods: This retrospective cohort study was conducted in patients with advanced stage III or stage IV LAD with EGFR-sensitizing mutations (exon 19 deletion or L858R mutation) with disease control after first-line osimertinib. A curative dose of primary tumor radiotherapy or primary tumor resection was classified as PTCT. We compared the progression-free survival (PFS) and overall survival (OS) of patients with and without PTCT. Results: This study included 106 patients with a median age of 61.0 years, and of those, 42% were male and 73.6% were never-smokers. Exon 19 deletion was observed in 67.9%, 30.2% had a programmed cell death ligand 1 (PD-L1) tumor proportion score

Background: The relative importance of predictive factors for advanced non-small cell lung cancer (NSCLC) patients on epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitor (TKI) treatment remains unclear. Materials and methods: We retrospectively enrolled advanced NSCLC patients with single first-generation EGFR-TKI treatment for ⩾5 years (Y) in Taiwan. Clinical data was collected and compared with those of another cohort with single first-line EGFR-TKI treatment for 5 Y group. Results: Overall, 128 and 278 patients were enrolled in the ⩾5 Y and