A Phase 2, Double-Blind, Multiple-Dose Escalation Study to Evaluate NKTR-118 (oral PEG-Naloxol) in Patients With Opioid-Induced Constipation (OIC)

Study (07-IN-NX003) is a Phase 2, multi-center, placebo-controlled, double-blind, randomized, dose-escalation trial. It is designed to investigate the safety, efficacy and tolerability of NKTR-118 (PEG-naloxol) in patients with opioid-induced constipation (OIC) and other clinical manifestations of opioid-induced bowel dysfunction (OBD). The objective of this study is to evaluate the safety, effectiveness and pharmacokinetics of NKTR-118 at 4 different doses. The study is currently active and plans to enroll approximately 224 patients at about 50 sites in the US, Canada and the EU.