Efficacy and Safety of Pazopanib Monotherapy After First Line Chemotherapy in Ovarian, Fallopian Tube, or Primary Peritoneal Cancer

Inclusion Criteria:

* written informed consent
* At least 18 years old.
* Histologically confirmed, FIGO stage II-IV epithelial ovarian, fallopian tube or primary peritoneal carcinoma that was treated with surgical debulking and at least five cycles of platinum-taxane doublet chemotherapy.
* Study randomization at least 3 weeks and not more than 12 weeks from the date of the last chemotherapy dose, and all major toxicities from the previous chemotherapy must have resolved.
* No evidence of disease progression
* ECOG status of 0 or 2
* Able to swallow and retain oral medication.
* Adequate hematologic, hepatic, and renal system function as follows:

Hematologic

* Absolute neutrophil count (ANC) at least 1.5 X 10\^9/L
* Hemoglobin at least 9 g/dL (or 5.59 mmol/L)
* Platelets at least 100 X 10\^9/L
* Prothrombin time (PT) or international normalized ratio (INR) up to 1.2 X ULN
* Activated partial thromboplastin time (aPTT) up to 1.2 X ULN Hepatic
* Total bilirubin up to 1.5 X ULN
* AST and ALT up to 2.5 X ULN Renal
* Serum creatinine up to 1.5 mg/dL

Or, if greater than 1.5 mg/dL:

Calculated creatinine clearance at least 50 mL/min Urine Protein

* Urine protein is 0, trace, or +1 determined by dipstick urinalysis, or \< 1.0 gram determined by 24- hour urine protein analysis.
* Non-childbearing potential (i.e., physiologically incapable of becoming pregnant) OR childbearing potential, and agrees to use adequate contraception.

Exclusion Criteria:

* Either (a) bulky disease, or (b) any residual disease which in the opinion of the investigator will need imminent second-line therapy
* Synchronous primary endometrial carcinoma, or a past history of primary endometrial carcinoma, are excluded unless certain conditions are met.
* Clinically significant gastrointestinal abnormalities
* Prolongation of corrected QT interval (QTc) \> 480 msecs
* History of any one or more cardiovascular conditions within the past 6 months prior to randomization
* Cardiac angioplasty or stenting
* Myocardial infarction
* Unstable angina
* Symptomatic peripheral vascular disease

  * Class III or IV congestive heart failure
* Poorly controlled hypertension
* History of cerebrovascular accident (including transient ischemic attacks), pulmonary embolism or untreated deep venous thrombosis (DVT) within the past 6 months prior to randomization
* Major surgery (including interval debulking) or trauma within 28 days, or minor surgical procedures within 7 days, prior to randomization, or has any non-healing wound, fracture, or ulcer.
* Evidence of active bleeding or bleeding diathesis.
* Hemoptysis within 6 weeks prior to randomization.
* Endobronchial metastases.
* Serious and/or unstable pre-existing medical (e.g., uncontrolled infection), psychiatric, or other condition that could interfere with subject's safety, provision of informed consent, or compliance to study procedures.
* Investigational or anti-VEGF anticancer therapy prior to study randomization.
* Known immediate or delayed hypersensitivity reaction or idiosyncrasy to drugs chemically related to pazopanib
* Invasive malignancies that showed activity of disease within 5 years prior to randomization