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Completed Phase 2 Interventional Results available

Extension Study Of Stage 1 Subjects Of Study A3921009 For The Prevention Of Acute Rejection In Kidney Transplant Patient

ClinicalTrials.gov ID: NCT00263328

Public ClinicalTrials.gov record NCT00263328. 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.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 7:25 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Multicenter, Phase 2, Open-label, Controlled, Extension Study For Stage 1 Subjects Of Study A3921009 To Evaluate The Long-term Safety And Efficacy Of Cp-690,550 Versus Tacrolimus, When Co-administered With Mycophenolate Mofetil In Renal Allograft Recipients

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

A new immunosuppressive drug, based on the inhibition of an important enzyme in the immune system called JAK3, is being developed by Pfizer to prevent transplant rejection. In study A3921009, kidney transplant patients were given a JAK inhibitor or tacrolimus for 6 months posttransplant. Patients who completed study A3921009 were offered the opportunity to participate in study A3921021 which will extend the evaluation of safety and efficacy of CP-690,550 versus tacrolimus through 8 years posttransplant. In treatment group 1 (control arm), subjects will continue to receive tacrolimus. In treatment groups 2 and 3, subjects will continue to receive CP-690,550. Per Amendment 4, the tacrolimus comparator arm will be discontinued.

Study identification

NCT ID
NCT00263328
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Pfizer
Industry
Enrollment
46 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years to 70 Years
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
Dec 2005 (Type not available)
Primary completion
Jan 2014 (Actual)
Completion
Jun 2014 (Actual)
Last update posted
Jul 13, 2015

2005 – 2014

United States locations

U.S. sites
27
U.S. states
8
U.S. cities
13
Facility City State ZIP Site status
Multi Organ Transplant Center Los Angeles California 90057 —
St. Vincent Medical Center Los Angeles California 90057 —
Transplant Research Institute Los Angeles California 90057 —
Stanford School of Medicine Palo Alto California 94304 —
Balboa Institute of Transplantation San Diego California 92123 —
California Institute of Renal Research San Diego California 92123 —
Sharp Memorial Hospital San Diego California 92123 —
California Pacific Medical Center San Francisco California 94115 —
University of California, San Francisco, Kidney Transplant Unit San Francisco California 94143 —
Stanford University Medical Center Stanford California 94305 —
University of Colorado Health Sciences Center Renal Clinical Trials Office Aurora Colorado 80045 —
University of Colorado Health Sciences Center Aurora Colorado 80045 —
Northwestern Memorial Hospital Chicago Illinois 60611 —
Northwestern University-Feinberg School of Medicine, Division of Organ Transplantation Chicago Illinois 60611 —
Washington University School of Medicine St Louis Missouri 63110 —
Jack J Dreyfus Clinic New York New York 10021 —
Recanati/Miller Transplantation Institute New York New York 10029 —
New York Presbyterian Hospital / Weill Cornell Medical Center New York New York 10065 —
Legacy Good Samaritan Hospital Portland Oregon 97210 —
Legacy Transplant Services Portland Oregon 97210 —
Northwest Renal Clinic Portland Oregon 97210 —
Dallas Transplant Institute Dallas Texas 75204 —
Annette C & Harold C Simmons Transplant Institute Dallas Texas 75246 —
Baylor University Medical Center Dallas Texas 75246 —
Baylor All Saints Medical Center Fort Worth Texas 76104 —
Froedtert Memorial Lutheran Hospital Milwaukee Wisconsin 53226 —
Medical College of Wisconsin Milwaukee Wisconsin 53226 —

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 NCT00263328, 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 Jul 13, 2015 · Synced Oct 21, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00263328 live on ClinicalTrials.gov.

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