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About
The purpose of this clinical research study is to learn if pazopanib when given in combination with topotecan can help to control sarcomas. The safety of this drug combination will also be studied. Pazopanib hydrochloride and topotecan hydrochloride may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.
Full description
PRIMARY OBJECTIVES:
I. To determine progression free rate at week 12 for patients with soft tissue sarcoma (STS) treated with pazopanib (pazopanib hydrochloride) plus oral topotecan (topotecan hydrochloride).
SECONDARY OBJECTIVES:
I. To determine the overall response rate for patients with STS treated with combination pazopanib and topotecan.
II. To determine the clinical benefit rate (complete response [CR] + partial response [PR] + stable disease [SD]) for patients with STS treated with combination pazopanib and topotecan.
III. To determine median progression-free rate (PFR) for patients with STS treated with combination pazopanib and topotecan.
IV. To evaluate overall survival (OS) for patients with STS treated with combination pazopanib and topotecan.
V. To assess safety and tolerability for patients treated with combination pazopanib and topotecan.
VI. To estimate the PFR for patients with osteosarcoma treated with combination pazopanib and topotecan.
VII. To estimate the PFR for patients with liposarcoma treated with combination pazopanib and topotecan.
TERTIARY OBJECTIVES:
I. To estimate the correlation of PFR and OS to levels of soluble vascular endothelial growth factor receptor 2 (sVEGFR2) and phosphatidylinositol-glycan biosynthesis class F (PIGF).
OUTLINE:
Patients receive pazopanib hydrochloride orally (PO) once daily (QD) on days 1-28 and topotecan hydrochloride PO on days 1, 8, and 15. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity or until discontinuation per patient preference or physician recommendation.
After completion of study treatment, patients are followed up every 6 months for 2 or 5 years.
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Inclusion criteria
Patients must provide written informed consent prior to performance of study-specific procedures or assessments and must be willing to comply with treatment and follow-up
Patients must have a histologically confirmed diagnosis of:
Patients must exhibit an Eastern Cooperative Oncology Group (ECOG) performance status of 0-1
Patients must have measurable disease within 4 weeks prior to registration by Response Evaluation Criteria In Solid Tumors (RECIST) 1.1, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded) as >= 20 mm with conventional techniques or as >= 10mm with spiral computed tomography (CT) scan
Patients must have had a minimum of 1 and a maximum of 4 prior chemotherapy regimens for recurrent/metastatic disease; it will be up to the investigator to determine what constitutes a "regimen" in each case; the last dose of systemic therapy much have been given at least 4 weeks prior to initiation of therapy; patients receiving BCNU or mitomycin C must have received their last dose at least 6 weeks prior to initiation of therapy
Patients with brain metastasis are eligible for participation only if they have been treated with definitive surgery or radiation (surgery ± radiotherapy, radiosurgery, or gamma knife) and meet both of the following criteria: a) are asymptomatic and b) have no requirement for steroids or enzyme-inducing anticonvulsants in prior 12 week interval
Absolute neutrophil count (ANC) >= 1.5 X 10^9/L (tested within 7 days prior to Registration)
Hemoglobin >= 9 g/dL (5.6 mmol/L)
Platelets >= 100 X 10^9/L
Prothrombin time (PT) or international normalized ratio (INR) =< 1.2 X upper limit of normal (ULN)
Activated partial thromboplastin time (aPTT) =< 1.2 X ULN
Total bilirubin =< 1.5 X ULN
Alanine amino transferase (ALT) and aspartate aminotransferase (AST) =< 2.5 X ULN
Serum creatinine =< 1.5 mg/dL (133 umol/L) or, if > 1.5 mg/dL: calculated creatinine clearance (ClCR) >= 30 mL/min to >= 50 mL/min
Urine protein to creatinine ratio (UPC) < 1
Females of child-bearing potential (FOCBP) and males must agree to use adequate contraception prior to study entry, for the duration of study participation, and for 30 days following completion of therapy; should a female patient become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately; Note: a FOCBP is any woman (regardless of sexual orientation, having undergone a tubal ligation, or remaining celibate by choice) who meets the following criteria:
FOCBP must have a negative pregnancy test within 7 days prior to registration on study
Are able to swallow and retain oral tablets
Exclusion criteria
Patients with any of the following sarcoma histologic subtypes will not be eligible for participation:
Patients must not have received prior treatment with pazopanib or topotecan
Patients must not have an active secondary malignancy
Prior malignancy, unless they have been disease-free for 3 years, or have a history of completely resected non-melanomatous skin carcinoma or successfully treated in situ carcinoma
Clinically significant gastrointestinal abnormalities that may increase the risk for gastrointestinal bleeding including, but not limited to:
Clinically significant gastrointestinal abnormalities that may affect absorption of investigational product including, but not limited to:
Corrected QT interval (QTc) > 480 msecs using Bazett's formula
History of any one or more of the following cardiovascular conditions within the past 12 months:
Poorly controlled hypertension [defined as systolic blood pressure (SBP) of >= 140 mmHg or diastolic blood pressure (DBP) of >= 90mmHg Note: initiation or adjustment of antihypertensive medication(s) is permitted prior to study entry; following antihypertensive medication initiation or adjustment, blood pressure (BP) must be re-assessed three times at approximately 2-minute intervals; at least 24 hours must have elapsed between anti-hypertensive medication initiation or adjustment and BP measurement; these three values should be averaged to obtain the mean diastolic blood pressure and the mean systolic blood pressure; the mean SBP / DBP ratio must be < 140/90 mmHg (or 150/90 mm Hg, if this criterion deemed safe by principal investigator [PI] and the quality assurance monitor [QAM]) in order for a patient to be eligible for the study
Patients with a history of cerebrovascular accident including transient ischemic attack (TIA), pulmonary embolism, or untreated deep venous thrombosis (DVT); patients with DVT must have received appropriate therapy for at least 6 months to be considered eligible
Major surgery or trauma within 28 days prior to first dose of investigational product and/or presence of any non-healing wound, fracture, or ulcer (procedures such as catheter placement not considered to be major surgery)
Evidence of active bleeding or bleeding diathesis
Known endobronchial lesions and/or lesions infiltrating major pulmonary vessels that increase the risk of pulmonary hemorrhage
Recent hemoptysis (>= 1/2 teaspoon [2.5 mL]) of red blood within 8 weeks before first dose of study drug
Any serious and/or unstable pre-existing medical, psychiatric, or other condition that could interfere with patient's safety, provision of informed consent, or compliance to study procedures
Unable or unwilling to discontinue use of inducers and inhibitors of cytochrome P450 (CYP450) listed for at least 14 days or five half-lives of a drug (whichever is longer) prior to the first dose of study drug and for the duration of the study; cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) substrates can be administered, but investigators will need to be aware of possible increased or decreased effectiveness of the non-study drug and this should be recorded in concomitant medications; breast cancer resistance protein (BCRP) and p-glycoprotein (PgP) inducers and inhibitors will be also prohibited
Treatment with any of the following anti-cancer therapies:
Administration of any non-oncologic investigational drug within 30 days or 5 half-lives whichever is longer prior to receiving the first dose of study treatment
Any ongoing toxicity related to prior anti-cancer therapy that is > grade 1 and/or that is progressing in severity (exceptions include alopecia, fatigue, and hematologic toxicities)
Have a known immediate or delayed hypersensitivity reaction or idiosyncrasy to drugs chemically related to pazopanib or topotecan
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178 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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