Inclusion Criteria

Inclusion Criteria -

- signed, written informed consent.

- at least 18 years of age.

- ECOG performance status 0 or 1.

- Subjects must have histologically or cytologically confirmed diagnosis of advanced
cancer and a solid tumor malignancy that has relapsed or is refractory to standard
therapy or for which there is no established therapy.

- able to swallow and retain oral medications.

- females are eligible to enter and participate in this study providing adequate
established contraception is being practiced.

Exclusion Criteria

- had chemotherapy or radiotherapy within 4 weeks (6 weeks for nitrosoureas or
mitomycin C)

- received an investigational drug within 30 days or 5 half-lives (whichever is
longer).

- received prior treatment with pazopanib/investigational anti-angiogenic compounds.

- presence of uncontrolled infection.

- pregnant or lactating.

- poorly controlled hypertension (SBP of ? 140 mmHg, or DBP of ? 90 mmHg.

- Class III or IV heart failure as defined by the New York Heart Association (NYHA)
functional classification system.-

- arterial thrombi, myocardial infarction, admission for unstable angina, uncontrolled
or symptomatic arrhythmia, cardiac angioplasty, or stenting within the last 6 months.

- any unresolved bowel obstruction or diarrhea ? Grade 1.

- received an allogeneic bone marrow transplant.

- known immediate or delayed hypersensitivity reaction or idiosyncrasy to drugs
chemically related to pazopanib or topotecan.

- any serious and/or unstable pre-existing medical, psychiatric, or other conditions
that could interfere with subject's safety, obtaining informed consent or compliance
with the study.

- psychological, familial, sociological, or geographical conditions that do not permit
compliance with the protocol.

- clinical history, current alcohol or illicit drug use which, in the judgment of the
investigator, would interfere with the subject's ability to comply with the dosing
schedule and protocol-specified evaluations.