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A Study of Dopamine Type 2 (D2) Receptor Occupancy Following a Single Oral Dose of OROS Paliperidone

This study has been completed.
Information provided by:
Johnson & Johnson Pharmaceutical Research & Development, L.L.C. Identifier:
First received: November 20, 2008
Last updated: June 8, 2011
Last verified: March 2010
The purposes of this study are to estimate the relationship of D2-receptor occupancy to plasma concentration and to assess the safety of OROS paliperidone.

Condition Intervention Phase
Drug: OROS paliperidone
Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Open-label Positron Emission Tomography (PET) Study of Central D2-receptor Occupancy in Healthy Subjects Following a Single Oral Dose of OROS Paliperidone

Resource links provided by NLM:

Further study details as provided by Johnson & Johnson Pharmaceutical Research & Development, L.L.C.:

Primary Outcome Measures:
  • to evaluate D2 receptor occupancy and plasma concentration of paliperidone at defined times after intake of a single dose of OROS paliperidone 6 mg

Secondary Outcome Measures:
  • to derive pharmacokinetic/pharmacodynamic relationships and the occurrence of adverse events

Enrollment: 4
Study Start Date: March 2003
Study Completion Date: June 2003
Detailed Description:
This is a single-center, single-dose, open-label, Phase-1 Positron Emission Tomography (PET) study in 4 healthy volunteers, 2 men and 2 women. After screening, healthy eligible volunteers will be hospitalized in the study unit from study Day 2 to Day 4. On Day 1 (the day before hospitalization), volunteers will enter the study unit from 5:00 p.m. to 8:00 p.m. for baseline prolactin blood sampling and sedation assessment. Each volunteer will have a control magnetic resonance imaging (at screening) and 3 PET measurements using the radioligand [11]C raclopride to measure central D2 receptor occupancy in the putamen. Blood samples to measure plasma concentrations of paliperidone will be collect immediately before and at scheduled time points after dose administration on Day 2, and immediately before, halfway through, and immediately after the PET-2 and PET-3 measurements. Serum prolactin levels will be measured immediately before and at several scheduled time points after dose administration, and immediately before and after each PET measurement. At scheduled time points, supine and standing blood pressures, pulse, sensorium changes, temperature, and degree of sedation will be recorded, volunteers will be questioned about adverse events, and they will be evaluated for extrapyramidal symptoms (EPS). Adverse events will be recorded and followed throughout the study. The rationale for the study design is based on previous PET studies with risperidone, which indicated that PET measurement of D2 receptor occupancy after a single dose of medication is useful in predicting an effective clinical dose range. Single oral dose (6 mg) of OROS paliperidone

Ages Eligible for Study:   20 Years to 45 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Within 20% of ideal body weight
  • If a woman, must be surgically sterile, or practicing an effective method of birth control (e.g., prescription oral contraceptives, contraceptive injections, intrauterine device, double-barrier method, male partner sterilization) before entry and throughout the study
  • and must have a negative serum beta HCG test at screening
  • Healthy on the basis of a pre-study physical examination, medical history, anamnesis, electrocardiogram, magnetic resonance imaging of the brain, and the results of blood biochemistry and hematology tests and a urinalysis carried out less than 2 weeks before the first dose. If the results of the biochemistry or hematology tests or the urinalysis testing are not within the laboratory's reference ranges the volunteer can be included only on condition that the investigator judges that the deviations are not clinically significant.

Exclusion Criteria:

  • History or suspicion of alcohol, barbiturate, amphetamine or narcotic abuse
  • History of cardiac arrhythmias, bronchospastic or respiratory disease, cardiovascular, neurologic, renal, hepatic, endocrine, or immunologic disease
  • Drug allergy to raclopride, paliperidone, or risperidone or any of its excipients
  • Use of concomitant medication, except for paracetamol and hormonal contraceptives. All other medication must have been stopped at least 14 days before the first PET examination
  • Received an experimental drug or used an experimental medical device within 30 days before the planned start of treatment
  • Previously used an antipsychotic medication
  • Previously participated in a PET study or measurement
  • Had a significant loss of blood <1 month before the first PET examination
  • Pregnant as confirmed by a positive beta-HCG test at screening and before the first PET examination, or breastfeeding
  • Claustrophobia.
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Please refer to this study by its identifier: NCT00796432

Sponsors and Collaborators
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Study Director: Johnson & Johnson Pharmaceutical Research & Development, L.L. C. Clinical Trial Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
  More Information

Additional Information: Identifier: NCT00796432     History of Changes
Other Study ID Numbers: CR004267
Study First Received: November 20, 2008
Last Updated: June 8, 2011

Keywords provided by Johnson & Johnson Pharmaceutical Research & Development, L.L.C.:
mood disorders
antipsychotic drugs
receptor occupancy
OROS paliperidone

Additional relevant MeSH terms:
Schizophrenia Spectrum and Other Psychotic Disorders
Mental Disorders
Paliperidone Palmitate
Antipsychotic Agents
Tranquilizing Agents
Central Nervous System Depressants
Physiological Effects of Drugs
Psychotropic Drugs
Serotonin 5-HT2 Receptor Antagonists
Serotonin Antagonists
Serotonin Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Dopamine D2 Receptor Antagonists
Dopamine Antagonists
Dopamine Agents
Cardiotonic Agents
Autonomic Agents
Peripheral Nervous System Agents
Protective Agents processed this record on April 26, 2017