A Study of the Pharmacokinetics of ER OROS Paliperidone in Volunteers With Normal or Impaired Renal Function

This is a single dose, parallel group, open-label, 2 center pharmacokinetic study, consisting of a pretreatment (screening) period of between 1 and 3 weeks, an open label treatment period (single dose of ER OROS paliperidone on Day 1 only, and with end of study procedures and discharge ending on Day 6). All patients will be screened between Day 21 and Day 1 for renal function. On Day 1, all patients will receive a single oral dose of 3 mg ER OROS paliperidone and undergo a 120 hour follow up with serial blood collections for pharmacokinetics, safety and tolerability assessments. Patients will be discharged after giving a pharmacokinetic blood sample and completing end of study assessments in the morning of Day 6. Group matching will be applied to the renal function groups to reduce bias and increase comparability of age, weight, gender, and ethnicity. This study is aimed to compare the pharmacokinetics and safety profile of ER OROS paliperidone in patients with varying degrees of renal impairment with that of normal patients. 3 mg oral ER OROS paliperidone