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A Randomized, Phase II Study of GW786034 (Pazopanib) in Stage D0 Relapsed Androgen Sensitive Prostate Cancer Following Limited GnRH Agonist Therapy

Phase 2
18 Years
Open (Enrolling)
Recurrent Prostate Cancer

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Trial Information

A Randomized, Phase II Study of GW786034 (Pazopanib) in Stage D0 Relapsed Androgen Sensitive Prostate Cancer Following Limited GnRH Agonist Therapy


I. Determine if pazopanib hydrochloride is able to increase time to progression, as measured
by prostate-specific antigen (PSA), after 6 months of limited gonadotropin-releasing hormone
(GnRH) agonist therapy comprising leuprolide acetate or goserelin in patients with
androgen-sensitive relapsed stage D0 prostate cancer.


I. Determine the adverse events in patients treated with this regimen. II. To monitor for
changes in testosterone in relationship to pazopanib therapy versus observation.


Patients receive androgen blockade comprising GnRH agonist therapy (e.g., leuprolide acetate
or goserelin acetate) for 6 months. Patients who develop metastases or have PSA progression
while on GnRH agonist therapy are removed from the study and placed on total androgen
blockade. The remaining patients are randomized to 1 of 2 treatment arms.

ARM I: Patients receive pazopanib hydrochloride orally (PO) once daily (QD) on days 1-28.
Treatment repeats every 28 days in the absence of disease progression or unacceptable

ARM II: Patients undergo observation.

After completion of study treatment, patients are followed up periodically for up to 12

Inclusion Criteria:

- Histologically or cytologically confirmed prostate cancer

- Stage D0

- Must have undergone some definitive local therapy for prostate cancer

- Must be free of macrometastatic disease, as evidenced by computed tomography (CT)
scan and bone scan, if serum PSA ≥ 10 ng/mL prior to GnRH agonist therapy

- Progressive disease meeting the following criteria: NOTE: Patients who have undergone
a prostatectomy and have two detectable, rising serum PSA levels are eligible

- Two consecutive rises in PSA above nadir recorded after definite local therapy

- Serum PSA concentrations must have absolute value of > 0.5 ng/mL (separated by ≥
2 weeks) prior to beginning GnRH agonist therapy

- PSA < 0.5 ng/mL

- Testosterone < 30 ng/mL

- No measurable disease

- No brain metastases requiring steroid or anticonvulsant therapy

- Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0-2 OR Karnofsky PS
60- 100%

- Prothrombin time (PT)/international normalization ratio (INR)/partial thromboplastin
time (PTT) ≤ 1.2 times upper limit of normal (ULN)

- Bilirubin normal

- Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 2.5 times ULN

- Creatinine ≤ 1.5 times ULN OR creatinine clearance > 50 mL/min

- Proteinuria ≤ 1+ on 2 consecutive dipsticks > 1 week apart

- Urine protein: creatinine ratio < 1 OR urine protein < 1.0 g/24 hours

- Fertile patients must use effective double-barrier contraception during study therapy
OR completely abstain from sexual intercourse 14 days prior to, during, and for ≥ 21
days after completion of study therapy

- No history of allergic reactions attributed to compounds of similar chemical or
biological composition to pazopanib hydrochloride or to other agents used in the

- No concurrent uncontrolled illness including, but not limited to, any of the

- Ongoing or active infection

- Psychiatric illness or social situations that would preclude compliance with
study requirements

- No human immunodeficiency virus (HIV) positivity

- No condition that impairs the ability to swallow and retain pazopanib hydrochloride
tablets, including any of the following:

- Gastrointestinal tract disease resulting in an inability to take oral medication

- Requirement for intravenous (IV) alimentation

- Prior surgical procedures affecting absorption

- Active peptic ulcer disease

- No other conditions, including any of the following:

- Serious or nonhealing wound, ulcer, or bone fracture

- Abdominal fistula, gastrointestinal perforation, or intra-abdominal abscess
within the past 28 days

- Cerebrovascular accident within the past 6 months

- Myocardial infarction, admission for unstable angina, cardiac angioplasty, or
stenting within the past 6 months

- Venous thrombosis within the past 12 weeks

- New York Heart Association (NYHA) class III or IV heart failure

- History of currently treated asymptomatic NYHA class II heart failure

- Systolic blood pressure (BP) ≤ 140 mm Hg and diastolic BP ≤ 90 mm Hg

- Prior initiation or adjustment of BP medication allowed provided that the
average of 3 BP readings at a visit prior to enrollment is < 140/90 mm Hg

- More than 3 months since prior antiandrogen

- More than 4 months since prior orchiectomy or implantable luteinizing LHRH agonist

- No prior GnRH agonists except for neoadjuvant or adjuvant therapy associated with
local therapy

- Patients who have started a GnRH agonist for micrometastatic disease after local
therapy allowed provided the following criteria are met:

- Progressive disease

- Willing to discontinue therapy before 6 months have elapsed

- Have signed consent prior to completing 6 months of the initial hormone

- Are within 4 months of initiating GnRH agonist therapy

- No prior or concurrent GnRH antagonist therapy

- No concurrent ketoconazole

- No concurrent cytochrome P450 2C9 (CYP2C9) substrates, including any of the

- Anticoagulants (e.g., warfarin [therapeutic doses only])

- Low molecular weight heparin or prophylactic low-dose warfarin allowed

- Oral hypoglycemics (e.g., glipizide, glyburide, tolbutamide, glimepiride, or

- Ergot derivatives (e.g., dihydroergotamine, ergonovine, ergotamine, or

- Neuroleptics (e.g., pimozide)

- Erectile dysfunction agents (e.g., sildenafil, tadalafil, or vardenafil)

- Antiarrhythmics (e.g., bepridil, flecainide, lidocaine, mexiletin, amiodarone,
quinidine, or propafenone)

- Immune modulators (e.g., cyclosporine, tacrolimus, or sirolimus)

- Miscellaneous medications (e.g., theophylline, quetiapine, risperidone, tacrine,
clozapine, or atomoxetine)

- No concurrent medications associated with the risk of QTc prolongation and/or
Torsades de Pointes

- Replacement of drugs that do not carry these risks allowed

- No other concurrent non-Food and Drug Administration (FDA)-approved agents

Type of Study:


Study Design:

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Outcome Measure:

Time to PSA progression

Outcome Description:

The time to disease progression distributions between the therapy and observation groups will be estimated using the Kaplan-Meier estimate, and compared using the log-rank test.

Outcome Time Frame:

Baseline, every 4 weeks during treatment, and up to 12 months after completion of study treatment

Safety Issue:


Principal Investigator

Edwin Posadas

Investigator Role:

Principal Investigator

Investigator Affiliation:

University of Chicago Comprehensive Cancer Center


United States: Food and Drug Administration

Study ID:




Start Date:

June 2006

Completion Date:

Related Keywords:

  • Recurrent Prostate Cancer
  • Prostatic Neoplasms



University of Wisconsin Hospital and Clinics Madison, Wisconsin  53792-0001
University of Chicago Comprehensive Cancer Center Chicago, Illinois  60637-1470