Completed

Ascending Single Dose Study of the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of NSA-789 Administered Orally to Healthy Subjects

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What is being tested

NSA-789

+ placebo

Drug
Who is being recruted

From 18 to 50 Years
See all eligibility criteria
How is the trial designed

Placebo-ControlledPhase 1
Interventional
Study Start: March 2008
See protocol details

Summary

Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: March 1, 2008

Actual date on which the first participant was enrolled.

This is the first time that NSA-789, a new compound being developed for schizophrenia, will be given to humans. Each healthy subject will receive a single dose, except for 8 subjects who will receive 2 doses-- one dose under fasting conditions and one dose after eating food.

Official TitleAscending Single Dose Study of the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of NSA-789 Administered Orally to Healthy Subjects
NCT00633048
Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

64 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 18 to 50 Years

Range of ages for which participants are eligible to join.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Criteria

Inclusion: * Healthy men and women between 18 and 50 years old. * Women must be of non-child-bearing potential (not able to have children). * Must be of normal body weight.

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

50% chance of being blinded to the placebo group

Treatment Groups

Group I

Experimental
active drug

Group II

Placebo
placebo

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has no location dataSave this study to your profile to know when the location data is available.
CompletedNo study centers