Durvalumab (MEDI4736) Plus Platinum-based Chemotherapy in Advanced LCNEC: a Pilot Phase II Study

PROTOCOL SYNOPSIS Clinical Protocol ESR-20-20907 Study Title: Durvalumab (MEDI4736) plus platinum-based chemotherapy in advanced large-cell neuroendocrine tumors of lung (LCNEC): a pilot phase II study Protocol Number: ESR-20-20907 Clinical Phase: phase II Study Duration: 30 months Investigational Product(s) and Reference Therapy: Investigational Product: Durvalumab (MEDI4736) Durvalumab concentrate for solution for infusion will be supplied in glass vials containing 500 mg durvalumab at a concentration of 50 mg/mL Reference Therapy: Cisplatin/Carboplatin+Etoposide Research Hypothesis Primary hypothesis: 1.1 In patients with advanced treatment naive LCNEC, treatment with Durvalumab+ Cisplatin/Carboplatin+Etoposide is associated with 12-month PFS rate of at least 18%. Secondary hypothesis: 1.2 In patients with advanced treatment naïve LCNEC, treatment with Durvalumab+ Cisplatin/Carboplatin+Etoposide is associated with ORR of 50%. 1.3 In patients with advanced treatment naïve LCNEC, treatment with Durvalumab+ Cisplatin/Carboplatin+Etoposide is associated with 12-months OS rate of at least 50%. 1.4 Incidence of grade ≥3 adverse events is less than 60%. Exploratory hypothesis: 1.5 There is a positive correlation between the small-cell lung cancer-like molecular subtype and efficacy parameters (ORR, PFS, OS), and also between high TMB and efficacy parameters (ORR, PFS, OS) of treatment with Durvalumab+Cisplatin/Carboplatin+Etoposide in patients with advanced treatment naive LCNEC. Objectives Primary Objective: 1.1 To assess progression-free survival (PFS at 12 months, RECIST v. 1.1) with Durvalumab+ Cisplatin/Carboplatin+Etoposide in patients with advanced treatment-naive LCNEC. Secondary Objectives: 1.2 To assess objective response rate (ORR at best response) according to Response Evaluation Criteria in Solid Tumors, v. 1.1 (RECIST v. 1.1) with Durvalumab+ Cisplatin/Carboplatin+Etoposide in patients with advanced treatment naive LCNEC. 1.3 To assess over