Nanoparticle albumin-bound paclitaxel in elder patients with advanced squamous non-small-cell lung cancer: A retrospective study

Purpose This study aimed to assess the effect of nanoparticle albumin-bound paclitaxel (nab-PTX) chemotherapy regimens in elderly patients (>= 70 years old) with advanced squamous non-small-cell lung cancer (NSCLC). Patients and Methods The clinical records of elderly patients aged >= 70 years with advanced squamous NSCLC were reviewed retrospectively. All of these patients received nab-PTX, with or without combination of chemotherapy in Shandong Cancer Hospital and Institute between 1 July 2012 and 30 June 2017. We analyzed the toxicity profiles, progression-free survival (PFS), overall survival (OS), objective response rate (ORR), and disease control rate (DCR). Results Totally, 52 elderly patients with squamous NSCLC were included in the analysis. For all patients, the ORR was 34.6%, the DCR was 80.8%, median PFS was 5.9 months (95% confidence interval [CI]: 4.0-7.8 months), and median OS was 14.3 months (95% CI: 11.0-17.8 months). Combination with chemotherapy significantly prolonged OS (19.3 vs 11.2 months, P = .016), despite a nonsignificant improvement in PFS (7.1 vs 4.2 months, P = .060) vs monotherapy. For patients who received nab-PTX as first-line treatment, the median PFS and OS were 6.7 months and 17.2 months, respectively, and the median OS in combination therapy subgroup was significantly higher than that in monotherapy group (20.3 vs 11.2 months, P = .013). Meanwhile, the median PFS and OS of patients with nab-PTX as second- or later-line treatment were 4.4 months and 13.3 months, respectively, but no survival benefit was achieved by the combination chemotherapy when compared with single-agent chemotherapy. Hematologic toxicities were the most common adverse events (AEs), which include grade 3 or 4 neutropenia (13.7%), thrombocytopenia (4.1%), and anemia (6.8%). The main nonhematologic toxicities were peripheral sensory neuropathy (39.7%), followed by anorexia and nausea/vomiting. Conclusion In elderly advanced squamous NSCLC patients, the treatment of nab-PTX was effective and well tolerated.