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New Haven, Connecticut 06511


PF-00572778, a CRH antagonist, is expected to attenuate adrenocorticotropin (ACTH) and cortisol responses to naloxone by blocking the effect of the CRH increases induced by naloxone at the postsynaptic receptors. Demonstration of a statistically significant attenuation of naloxone induced increases in cortisol and/or ACTH concentrations by PF-00572778 compared to placebo would thus constitute proof of mechanism for the compound. Therefore, this study is to evaluate pharmacodynamic effects of PF-00572778 following naloxone challenge in healthy subjects.


Inclusion Criteria: Healthy male and/or female subjects between the ages of 18 and 45 years; Body Mass Index (BMI) of approximately 18 to 30 kg/m2; and a total body weight >50 kg (110 lbs). Exclusion Criteria: Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease; Family (1st degree relatives) and personal history of meeting Diagnostic and Statistical Manual -IV (DSM-IV) criteria for alcohol abuse or dependence.



Primary Contact:

Study Director
Pfizer CT.gov Call Center

Backup Contact:


Location Contact:

New Haven, Connecticut 06511
United States

There is no listed contact information for this specific location.

Site Status: N/A

Data Source: ClinicalTrials.gov

Date Processed: October 09, 2019

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