Phase II Study of the Modified Weekly Nab-paclitaxel Regimen in Previously Treated Patients With Advanced Non-Small Cell Lung Cancer.
2021
Objectives We conducted a clinical phase II study to evaluate the modified weekly nanoparticle albumin-bound paclitaxel (nab-paclitaxel) regimen in pretreated patients with advanced non-small cell lung cancer (NSCLC). Materials and methods This multicenter single-arm phase II study enrolled patients with advanced NSCLC who had previously received >1 chemotherapy regimen. Patients received nab-paclitaxel at 80 mg/m2 on days 1, 8, and 15 (21-d cycle). The primary endpoint was the investigator-assessed overall response rate (ORR). Secondary endpoints included overall survival, progression-free survival (PFS), disease control rate, and safety. The planned enrollment was 30 patients according to a Simon 2-stage minimax design. Results Thirty patients were enrolled between November 2015 and August 2017. Seventeen patients (56.7%) had received >2 regimens. The ORR was 23.3% (95% confidence interval [CI], 8.2%-38.4%), meeting the primary objective of the study. Median PFS was 5.7 months (95% CI, 3.4-9.0 mo), and median overall survival was 12.6 months (95% CI, 8.7-20.8 mo). The median number of treatment cycles was 4 (range, 1 to 20) over the entire study period, and median dose intensity was 63.6 mg/m2/wk (range, 45.7 to 100.0 mg/m2/wk). No new safety signals were reported; the most common grade ≥3 adverse events were neutropenia (56.7%), leukopenia (23.3%), and infection (10.0%). No cases of febrile neutropenia were observed. Conclusions Nab-paclitaxel monotherapy with a dose and schedule suitable for outpatients showed high ORR, long median PFS, and acceptable toxicity for patients with previously treated NSCLC. This dosage method may be useful for selected patients.
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