Determine The Percentage Of Depressed Outpatients Who Do Not Effectively Metabolize Extended-release Venlafaxine HCl
Public ClinicalTrials.gov record NCT00788944. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
An Open-Label Study To Evaluate The Prevalence Of Phenotypic Poor Metabolizers At CYP2D6 Among Venlafaxine-Treated Outpatients With Depression
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This is a study to determine the percentage of patients with depression who are treated with extended-release venlafaxine HCl (U.S. marketed brand Effexor XR®) who are Poor Metabolizers (based on the levels of the drug in the blood) at 2D6 (a system in the liver that breaks down some medications and other chemicals).
Study identification
- NCT ID
- NCT00788944
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 4
- Enrollment
- 971 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 2008 (Type not available)
- Primary completion
- Jul 2009 (Actual)
- Completion
- Jul 2009 (Actual)
- Last update posted
- Jan 7, 2011
2008 – 2009
United States locations
- U.S. sites
- 52
- U.S. states
- 28
- U.S. cities
- 49
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Pfizer Investigational Site | Birmingham | Alabama | 35216 | — |
| Pfizer Investigational Site | Tuscon | Arizona | 85710 | — |
| Pfizer Investigational Site | Little Rock | Arkansas | 72223 | — |
| Pfizer Investigational Site | National City | California | 91950 | — |
| Pfizer Investigational Site | Oceanside | California | 92056 | — |
| Pfizer Investigational Site | Santa Ana | California | 92701 | — |
| Pfizer Investigational Site | Temecula | California | 92591 | — |
| Pfizer Investigational Site | Colorado Springs | Colorado | 80909 | — |
| Pfizer Investigational Site | Denver | Colorado | 80204 | — |
| Pfizer Investigational Site | Cromwell | Connecticut | 06416 | — |
| Pfizer Investigational Site | Milford | Connecticut | 06460 | — |
| Pfizer Investigational Site | Coral Gables | Florida | 33134 | — |
| Pfizer Investigational Site | Lauderhill | Florida | 33319 | — |
| Pfizer Investigational Site | West Palm Beach | Florida | 33407 | — |
| Pfizer Investigational Site | West Palm Beach | Florida | 33409 | — |
| Pfizer Investigational Site | Decatur | Georgia | 30033 | — |
| Pfizer Investigational Site | Naperville | Illinois | 60563 | — |
| Pfizer Investigational Site | Wichita | Kansas | 67207 | — |
| Pfizer Investigational Site | Wichita | Kansas | 67211 | — |
| Pfizer Investigational Site | Crestview Hills | Kentucky | 41017 | — |
| Pfizer Investigational Site | Florence | Kentucky | 41042 | — |
| Pfizer Investigational Site | Columbia | Maryland | 21045 | — |
| Pfizer Investigational Site | Pittsfield | Massachusetts | 01201 | — |
| Pfizer Investigational Site | Watertown | Massachusetts | 02472 | — |
| Pfizer Investigational Site | Kalamazoo | Michigan | 49009 | — |
| Pfizer Investigational Site | Stevensville | Michigan | 49127 | — |
| Pfizer Investigational Site | Chesterfield | Missouri | 63017 | — |
| Pfizer Investigational Site | Jefferson City | Missouri | 65109 | — |
| Pfizer Investigational Site | Kalispell | Montana | 59901 | — |
| Pfizer Investigational Site | Las Vegas | Nevada | 89119 | — |
| Pfizer Investigational Site | Albuquerque | New Mexico | 87108 | — |
| Pfizer Investigational Site | Brooklyn | New York | 11223 | — |
| Pfizer Investigational Site | Brooklyn | New York | 11235 | — |
| Pfizer Investigational Site | Staten Island | New York | 10312 | — |
| Pfizer Investigational Site | Charlotte | North Carolina | 28209 | — |
| Pfizer Investigational Site | Wilmington | North Carolina | 28401 | — |
| Pfizer Investigational Site | Bismarck | North Dakota | 58051 | — |
| Pfizer Investigational Site | Fargo | North Dakota | 58104 | — |
| Pfizer Investigational Site | Cincinnati | Ohio | 45245 | — |
| Pfizer Investigational Site | Kettering | Ohio | 45429 | — |
| Pfizer Investigational Site | Mason | Ohio | 45040 | — |
| Pfizer Investigational Site | Norman | Oklahoma | 73069 | — |
| Pfizer Investigational Site | Oklahoma City | Oklahoma | 10213 | — |
| Pfizer Investigational Site | Bridgeville | Pennsylvania | 15017 | — |
| Pfizer Investigational Site | Philadelphia | Pennsylvania | 19139 | — |
| Pfizer Investigational Site | Pottstown | Pennsylvania | 19464 | — |
| Pfizer Investigational Site | Reading | Pennsylvania | 19606 | — |
| Pfizer Investigational Site | Greenville | South Carolina | 29615 | — |
| Pfizer Investigational Site | Mt. Pleasant | South Carolina | 29464 | — |
| Pfizer Investigational Site | Memphis | Tennessee | 38119 | — |
| Pfizer Investigational Site | San Antonio | Texas | 78229 | — |
| Pfizer Investigational Site | Bellevue | Washington | 98004 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00788944, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jan 7, 2011 · Synced Oct 19, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT00788944 live on ClinicalTrials.gov.