A Study of the Potential Effects of Trimethoprim on the Pharmacokinetics of ER OROS Paliperidone

Johnson & Johnson (J&J)

Status and phase

Completed

Phase 1

Conditions

Schizophrenia

Treatments

Drug: ER OROS paliperidone

Study type

Interventional

Funder types

Industry

Identifiers

NCT00892541

CR004150

Details and patient eligibility

About

The purpose of this study is to evaluate the effects of an organic cation transporter inhibitor, trimethoprim, on the pharmacokinetics of orally administered ER OROS paliperidone and to assess the safety and tolerability of the treatments in healthy male volunteers.

Full description

This study was designed as a single center, open-label, randomized, 2 treatment period crossover study in healthy male volunteers. The study consists of a screening period (within 21 days before the first study drug administration) before randomization; an open-label treatment phase consisting of 2 periods during which subjects will receive a single oral dose of ER OROS paliperidone alone (Treatment A) or in combination with 200 mg trimethoprim twice daily (Treatment B); and end-of-study evaluations upon completion of all the study procedures in Period 2 or early withdrawal. The pharmacokinetic blood and urine samples will be collected over a 96 hour period after ER OROS paliperidone administration. Successive ER OROS paliperidone administrations will be separated by at least 14 days. Given that the main elimination route of paliperidone is renal clearance and about half of this is through active secretion in the renal tubule, competition for this route of elimination can occur when other actively secreted drugs are coadministered. Therefore, the possible influence on the renal excretion of paliperidone will be investigated when a competitor for active renal secretion, trimethoprim, is coadministered. Safety and tolerability will be monitored throughout the study. Treatment A: a single oral dose of 6 mg ER OROS paliperidone on Day 1; Treatment B: a 200 mg trimethoprim tablet twice daily from Day 1 to Day 8 and a single oral dose of 6 mg ER OROS paliperidone on Day 5.

Enrollment

30 patients

Sex

Male

Ages

18 to 55 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

Male, aged 18 to 55 years, inclusive
Volunteers must have signed an informed consent document indicating that they understand the purpose of and procedures required for the study and are willing to participate in the study
Body Mass Index (BMI, weight [kg]/height [m²]) range of 18 to 28 kg/m², inclusive
Normotensive with supine (5 minutes) blood pressure between the range of 100 to 140 mmHg systolic, inclusive, and 60 to 90 mmHg diastolic, inclusive
Healthy on the basis of a prestudy physical examination, medical history, ECG, and the laboratory results of serum chemistry, hematology and urinalysis performed within 21 days before the first dose. If the results of the serum chemistry, hematology or urinalysis testing are not within the laboratory's reference ranges the subject can be included only if the investigator judges that the deviations are not clinically significant
Creatinine clearance value greater than or equal to 80 mL/min
Signed an informed consent for genetic testing, indicating whether the volunteer does or does not wish to participate in the genetic part of the study.

Exclusion criteria

Drug allergy to risperidone, paliperidone, trimethoprim, any of its excipients or history of hypersensitivity to heparin, in case a heparin lock will be used
Past or current history of folic acid deficiency or megaloblastic anemia
Recent history of alcohol or substance abuse or dependence or a positive test result for the urine drug screen at screening
Relevant history or presence of any cardiovascular (including myocardial infarct or cardiac arrhythmia), respiratory, neurological (including seizures, cerebrovascular disorders), psychiatric, renal, hepatic, gastrointestinal (including surgeries, severe gastrointestinal narrowing, and malabsorption problems), endocrinal, hematological or immunological disease. History of any cancer, with the exception of basal cell carcinomas
At screening, has a decrease of >20 mmHg in systolic blood pressure or a decrease of >10 mmHg in diastolic blood pressure after standing for at least 2 minutes that is not associated with an increase of >15 beats per minute (bpm) in heart rate
Bradycardia (heart rate <45 bpm) as determined by screening ECG
A positive result for any of the tests for hepatitis B, C, and human immunodeficiency virus (HIV).