Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT00821600 · ClinicalTrials.gov registry record · Phase 1

Characterization of Intramuscular Injections of Risperidone 4 Week Long-acting Injectable (LAI) Formulation in the Buttock of Patients With Schizophrenia

A Phase 1 study, sponsored by Johnson & Johnson Pharmaceutical Research & Development, L.L.C..

Completed
Registry status
Phase 1
Development phase
24
Enrollment target

NCT00821600: Completed Phase 1 study, sponsored by Johnson & Johnson Pharmaceutical Research & Development, L.L.C..

NCT00821600 is a Phase 1 study that has completed, run by Johnson & Johnson Pharmaceutical Research & Development, L.L.C.. The registered enrollment target is 24 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (60% lower). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT00821600, a Phase 1 study, has completed, sponsored by Johnson & Johnson Pharmaceutical Research & Development, L.L.C..

COMPLETED
Registry status
Phase 1
Development phase
24 participants
Enrollment target

Study Summary

The purpose of this study is to explore the pharmacokinetics, safety and tolerability of a 4-week long-acting injectable (LAI) formulation of risperidone after single intramuscular (i.m.) injection of 75 mg risperidone LAI in the gluteal muscle.

Interventions

  • DRUG risperidone IR and LAI formulation

Trial Details

FieldValue
Enrollment Target 24 participants
Start Date 2008-12
Est. Completion 2009-06
Phase Phase 1

What the finished NCT00821600 record still lists

NCT00821600 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 24 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (60% lower).

The record links to 0 conditions, and to 1 intervention - of which risperidone IR and LAI formulation is the first listed.

NCT00821600 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00821600 about?

NCT00821600 is a clinical study titled "Characterization of Intramuscular Injections of Risperidone 4 Week Long-acting Injectable (LAI) Formulation in the Buttock of Patients With Schizophrenia". The purpose of this study is to explore the pharmacokinetics, safety and tolerability of a 4-week long-acting injectable (LAI) formulation of risperidone after single intramuscular (i.m.) injection of 75 mg risperidone LAI in the gluteal muscle.

What is the current status of trial NCT00821600?

This trial is currently completed. It is a Phase 1 study. The enrollment target is 24 participants. The study started on 2008-12. Estimated completion is 2009-06.

What interventions are being tested in trial NCT00821600?

The interventions under investigation include: risperidone IR and LAI formulation (DRUG).

Who is sponsoring clinical trial NCT00821600?

This trial is sponsored by Johnson & Johnson Pharmaceutical Research & Development, L.L.C., which has 102 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT00821600's enrollment target sits among peer trials

24 1520th of 2000 higher than 405 of 2,000 other Phase 1 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT02331979 · 24 participants · NA

    Improving Bladder Function in SCI by Neuromodulation

  • NCT03096197 · 24 participants · NA

    Exoskeleton and Spinal Cord Stimulation for SCI

  • NCT03223922 · 24 participants · NA

    Neurocognitive Functioning With Genu-Sparing Whole Brain Radiation Therapy for Brain Metastases

  • NCT03326921 · 24 participants · Phase 1

    HA-1 T TCR T Cell Immunotherapy for the Treatment of Patients With Relapsed or Refractory Acute Leukemia After Donor Stem Cell Transplant

Similar registry start date

  • NCT05988463 · started 2027-01-01 · Phase 1

    Dose-Escalation Study of Artesunate Patients With IPF

  • NCT07219706 · started 2026-12-10 · NA

    Dietary Fiber and Time Restricted Eating

  • NCT02831335 · started 2026-12-01

    Technical Development of Multi-Parametric Renocerebral MRI

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

Source: ClinicalTrials.gov NCT00821600, the US trial registry maintained by the National Library of Medicine. NCT00821600 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.