Introduction: Gemcitabine and cisplatin is the standard first-line systemic treatment in patients with advanced cholangiocarcinoma (CCA). However, a substantial number of patients do not qualify for cisplatin due to comorbidities or poor performance status. The phase II pilot study NACHO evaluated the efficacy of nab-paclitaxel (125 mg/m2) and gemcitabine (1000 mg/m2) given on days 1, 8, and 15 every 4 weeks as first-line therapy in patients with advanced CCA ineligible for cisplatin-based chemotherapy. Methods: Patients with any comorbidity precluding cisplatin therapy, such as renal impairment, impaired hearing, increased risk or history for thromboembolic events, intolerance of extensive hydration, or significant cardiovascular disease were eligible. Primary endpoint was overall response rate (ORR) per RECIST 1.1. Secondary endpoints were progression-free survival (PFS), overall survival (OS), safety, and patient reported outcome. Results: From December 2016 to July 2017, 10 patients were prospectively enrolled and treated. The ORR with nab-paclitaxel/gemcitabine was 50%, the disease control rate (DCR) was 90%. Median PFS was 5.7 months (95% CI: 5.3–6.1), and median OS was 7.8 months (95% CI: 5.4–10.2). In total, 13 SAEs were documented without any new safety signals. There were 14 grade 3–4 treatment-related adverse events (TRAEs) in 10 patients of the ITT population. Exploratory subgroup analyses including known prognostic markers were performed. Conclusions: The NACHO trial supports safety and efficacy of nab-paclitaxel and gemcitabine in patients with advanced CCA ineligible for cisplatin-based therapy and should be further evaluated in a larger prospective trial.

Journal Section:
Research Article
Keywords:
Cholangiocarcinoma, Systemic chemotherapy, Cisplatin ineligibility, Gemcitabine, Nab-paclitaxel
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