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Pazopanib Hydrochloride Followed by Chemotherapy and Surgery in Treating Patients With Soft Tissue Sarcoma

The Effect of Antiangiogenic Therapy With Pazopanib Prior to Preoperative Chemotherapy for Subjects With Extremity Soft Tissue Sarcomas: A Randomized Study to Evaluate Response by Imaging

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01446809
Enrollment
23
Registered
2011-10-05
Start date
2012-04-30
Completion date
2019-01-31
Last updated
2020-04-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stage IIA Adult Soft Tissue Sarcoma, Stage III Adult Soft Tissue Sarcoma, Stage IV Adult Soft Tissue Sarcoma

Brief summary

This randomized pilot clinical trial studies pazopanib hydrochloride followed by chemotherapy and surgery in treating patients with soft tissue sarcoma. Pazopanib hydrochloride may stop the growth of tumor cells by blocking some of the enzymes that are needed for cell growth and may also stop the growth of soft tissue sarcoma by blocking blood flow to the tumor. Giving pazopanib hydrochloride and chemotherapy before surgery may make the tumor smaller and reduce the amount of tissue that needs to be removed.

Detailed description

PRIMARY OBJECTIVES: I. To determine the absolute values and changes in standardized uptake values (SUV) by fludeoxyglucose F18 (FDG)-positron emission tomography (PET) before and after a 14 day Run-in period of pazopanib (pazopanib hydrochloride) versus placebo, and to compare this to the change in SUV following pre-operative chemotherapy. II. To evaluate the correlation between antiangiogenic activity and pazopanib drug exposure. III. To assess the response rate by Response Evaluation Criteria In Solid Tumors (RECIST) criteria after the 14 day Run-in period of pazopanib versus placebo and compare this to the response rate following pre-operative chemotherapy. SECONDARY OBJECTIVES: I. To examine the activity of antiangiogenic therapy with pazopanib combined with pre-operative chemotherapy for high risk extremity soft tissue sarcomas as measured by: histological necrosis at surgery; change in plasma and tumor biomarker assays of angiogenesis II. To evaluate the safety of sequential treatment with pazopanib and pre-operative chemotherapy with doxorubicin (doxorubicin hydrochloride) and ifosfamide. OUTLINE: Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive pazopanib hydrochloride orally (PO) once daily (QD). Treatment continues for 14 days in the absence of disease progression or unacceptable toxicity. ARM II: Patients receive placebo PO QD. Treatment continues for 14 days in the absence of disease progression or unacceptable toxicity. All patients then receive neoadjuvant chemotherapy comprising doxorubicin hydrochloride intravenously (IV) continuously over days 1-3 and ifosfamide IV on days 1-5. Treatment repeats every 21 days for 4 courses. Beginning 2-4 weeks later, all patients undergo surgery followed by 2 more courses of chemotherapy 2-4 weeks after completion of surgery. Some patients may also undergo adjuvant external beam radiation therapy 5 days a week for 5 days followed by a boost. Patients treated on Arm I may resume pazopanib hydrochloride 1 week after completion of all adjuvant therapy for up to 1 year. Treatment continues in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days.

Interventions

DRUGDoxorubicin Hydrochloride

Given IV

RADIATIONExternal Beam Radiation Therapy

Undergo external beam radiation therapy

DRUGIfosfamide

Given IV

OTHERLaboratory Biomarker Analysis

Correlative studies

DRUGPazopanib Hydrochloride

Given PO

OTHERPharmacological Study

Correlative studies

OTHERPlacebo

Given PO

PROCEDURETherapeutic Conventional Surgery

Undergo surgery

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
University of Washington
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologically or cytologically confirmed soft-tissue sarcoma, excluding alveolar and embryonal rhabdomyosarcoma, well- and dedifferentiated adipocytic sarcomas, Ewing's, osteosarcoma, or gastrointestinal stromal tumor; American Joint Committee on Cancer (AJCC) (6th Edition) Stage III or T2a Stage II or Stage IV treatment naive patients planned for resection of the primary tumor, with resectable metastatic disease * Measurable disease greater than 5 centimeters in greatest dimension; measurable lesions are defined as those that can be accurately measured in at least one dimension (longest diameter for non-nodal lesions and short axis for nodal lesions to be recorded) by chest x-ray, computed tomography (CT) scan, magnetic resonance imaging (MRI) or with calipers by clinical exam; all tumor measurements must be recorded in millimeters (or decimal fractions of centimeters) * Intermediate or high grade lesions: 2 or 3 on a scale of 1-3 or grades 2 to 4 on a scale of 1-4 * Sarcoma located on upper (includes shoulder) or lower (includes hip) extremities or on the body wall * Life expectancy of greater than 6 months * Eastern Cooperative Oncology Group (ECOG) performance status =\< 1 * Karnofsky \>= 80% * No prior chemotherapy, radiotherapy, or antiangiogenic therapy * Absolute neutrophil count (ANC) \>= 1500/uL * Hemoglobin (Hgb) \>= 9.0 g/dL * Platelets \>= 100,000/uL * Creatinine =\< 1.5 x upper limit of normal (ULN) * Bilirubin =\< 1.5 mg/dL * Aspartate aminotransferase (AST)/alanine aminotransferase (ALT) =\< 1.5 x ULN * Prothrombin time (PT)/international normalized ratio (INR)/partial thromboplastin time (PTT) within 1.2 X the ULN unless a subject is receiving Coumadin and has stable INR which is in range for the desired level of anticoagulation * Left ventricular ejection fraction (LVEF) \>= 50% * Blood pressure (BP) no greater than 140 mmHg (systolic) and 90 mmHg (diastolic) for eligibility; initiation or adjustment of BP medication is permitted prior to study entry provided that the average of three BP readings on baseline assessment prior to enrollment is less than 140/90 mmHg * Eligibility of subjects receiving any medications or substances known to affect or with the potential to affect the activity or pharmacokinetics of pazopanib will be determined following review of their cases by the Principal Investigator * Women of child-bearing potential and men must agree to use adequate contraception * A female is eligible to enter and participate in this study if she is of non-childbearing potential (i.e., physiologically incapable of becoming pregnant) or if she is of childbearing potential * Ability to understand and the willingness to sign a written informed consent document

Exclusion criteria

* Subjects with known brain metastases and/or unresectable sarcoma * Uncontrolled intercurrent illness including, active serious infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac ventricular arrhythmia requiring anti-arrhythmic therapy, serious hepatic impairment, or psychiatric illness/social situations that would limit compliance with study * Pregnant or lactating women * Subjects with no additional active malignancy within the last 3 years * Subjects receiving other investigational agents * Subjects with a history of allergic reactions attributed to compounds of similar chemical or biologic composition to pazopanib or other agents used in the study * Subjects who have both bilirubin \> ULN and AST/ALT \> ULN * Subjects with a urine protein/creatinine ratio greater than 1 * Subjects with a baseline corrected QT (QTc) of equal to or greater than 480 msecs or other significant electrocardiogram (ECG) abnormalities * Certain medications that act through the cytochrome P450 (CYP450) system are specifically prohibited in subjects receiving pazopanib and others should be avoided or administered with extreme caution and require principal investigator (PI) approval * Strong inhibitors of CYP3A4 such as ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, voriconazole may increase pazopanib concentrations and are prohibited; grapefruit juice is also an inhibitor of CYP450 and should not be taken with pazopanib * Strong inducers of CYP3A4, such as rifampin, may decrease pazopanib concentrations, are prohibited * Medications which have narrow therapeutic windows and are substrates of CYP3A4, CYP2D6, or CYP2C8 should be avoided and, if necessary, administered with caution * Pazopanib, 800 mg once daily, has no effect on CYP2C9, CYP1A2, or CYP2C19 in vivo but does in vitro; therefore, therapeutic doses of warfarin, a substrate of CYP2C9, and omeprazole, a substrate of CYP2C19 are permitted; caffeine, a substrate of CYP1A2, is also permitted * Certain medications that are associated with a risk for QTc prolongation and/or Torsades de Pointes, although not prohibited, should be avoided or replaced with medications that do not carry these risks, if possible * Subjects who require heparin other than low-molecular weight heparin * Subjects with any condition that may impair the ability to swallow or absorb oral medications/investigational product including: * Any lesion, whether induced by tumor, radiation or other conditions, which makes it difficult to swallow capsules or pills * Prior surgical procedures affecting absorption including, but not limited to major resection of stomach or small bowel * Active peptic ulcer disease, not on a proton pump inhibitor * Malabsorption syndrome * Subjects with any condition that may increase the risk of gastrointestinal bleeding or gastrointestinal perforation, including * Active peptic ulcer disease, not on a proton pump inhibitor * Known intraluminal metastatic lesions * Inflammatory bowel disease (e.g., ulcerative colitis, Crohn's disease) or * Other gastrointestinal conditions which increase the risk of perforation * History of abdominal fistula, gastrointestinal perforation or intra-abdominal abscess within 28 days prior to beginning study treatment * Subjects with any of the following cardiovascular conditions within the past 6 months: * Cerebrovascular accident (CVA) or transient ischemic attack (TIA) * Cardiac arrhythmia * Admission for unstable angina * Cardiac angioplasty or stenting * Coronary artery bypass graft surgery * Pulmonary embolism, untreated deep venous thrombosis (DVT) or DVT which has been treated with therapeutic anticoagulation for less than 6 weeks * Arterial thrombosis * Symptomatic peripheral vascular disease * Class III or IV heart failure as defined by the New York Heart Association (NYHA) functional classification system; a subject who has a history of Class II heart failure and is asymptomatic on treatment may be considered eligible * History of hemoptysis in excess of 2.5 mL (1/2 teaspoon ) within 8 weeks prior to first dose of study drug * History of serious or non-healing wound, ulcer, or bone fracture * Human immunodeficiency virus (HIV)-positive subjects on combination antiretroviral therapy are ineligible * Subjects with severe hepatic impairment * Bilirubin \> 3 x ULN, regardless of any level of ALT

Design outcomes

Primary

MeasureTime frameDescription
Pharmacokinetic Profile of PazopanibUp to 14 daysTrough plasma pazopanib concentration measured during the 14 day run-in period on days 10 through 14.
Change in Maximum SUV of Tumors Measured by FDG-PET Pre- and Post Receipt of Pazopanib Versus PlaceboFrom baseline to 15 daysChange in maximum SUV (standardized uptake value) of tumors measured by FDG-PET. Comparison conducted using a two-sided Wilcoxon rank sum test.
Change in Maximum SUV of Tumors Measured by FDG-PET Post Receipt of 2 Courses of Preoperative ChemotherapyFrom baseline to 8 weeksChange in maximum SUV of tumors measured by FDG-PET. Comparison conducted using a two-sided Wilcoxon rank sum test.
Tumor Response by RECIST CriteriaAt 15 daysRECIST measurements will be performed on serial MRIs to evaluate the correlation with FDG-PET. The longest diameter (LD) of the target lesions will be measured and reported as the baseline LD. The baseline LD will be used as reference to further characterize the objective tumor response of the measurable dimension of the disease.Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Progression (PD), a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions

Secondary

MeasureTime frameDescription
Change in Levels of VEGF and Soluble VEGFR2 Assessed by ELISA on Plasma and Tumor ExtractsAt baseline and after 14 daysPlasma will be collected for measurement of VEGF and soluble VEGFR2 (sVEGFR2) at baseline, after the 14 day Run-in period of pazopanib, after completion of neoadjuvant chemotherapy and approximately every 3 months thereafter until completion of pazopanib maintenance therapy, when indicated. Quantitative enzyme-linked immunosorbent assays (ELISA) for VEGF and sVEGFR2 will be performed on plasma and tumor extracts. Plasma will also be collected for micro RNA at baseline, after the 14 day Run-in period of pazopanib, following neoadjuvant chemotherapy and every 3 months thereafter until completion of pazopanib maintenance therapy, when indicated.
Overall SurvivalUp to 3 yearsDefined as the interval of time from randomization until death from any cause.
Number of Participants With Pathologic Response at the Time of Surgery as Measured by % Tumor Viability ( >= 95% Necrosis)An expected average of 12 weeksEstimate the amount of viable tumor, and report the percentage of necrosis. Analysis was only completed on a subset of participants.
Progression Free SurvivalUp to 3 yearsDefined as the duration of time from randomization to progressive disease (per RECIST), local recurrence, distant metastatic disease (exclusive of stage IV subjects), or death, whichever occurs first.

Countries

United States

Participant flow

Participants by arm

ArmCount
Pazopanib
Patients receive pazopanib hydrochloride PO QD. Treatment continues for 14 days in the absence of disease progression or unacceptable toxicity. Doxorubicin Hydrochloride: Given IV External Beam Radiation Therapy: Undergo external beam radiation therapy Ifosfamide: Given IV Laboratory Biomarker Analysis: Correlative studies Pazopanib Hydrochloride: Given PO Pharmacological Study: Correlative studies Therapeutic Conventional Surgery: Undergo surgery
14
Placebo
Patients receive placebo PO QD. Treatment continues for 14 days in the absence of disease progression or unacceptable toxicity. Doxorubicin Hydrochloride: Given IV External Beam Radiation Therapy: Undergo external beam radiation therapy Ifosfamide: Given IV Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies Placebo: Given PO Therapeutic Conventional Surgery: Undergo surgery
7
Total21

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event001
Overall StudyFailure to complete study procedures001

Baseline characteristics

CharacteristicPazopanibTotalPlacebo
Age, Continuous49.5 years53 years61 years
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants1 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
13 Participants20 Participants7 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Asian
1 Participants2 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
13 Participants18 Participants5 Participants
Screening SUV7.1 Standardized Uptake Value- SUV8.3 Standardized Uptake Value- SUV9.9 Standardized Uptake Value- SUV
Sex: Female, Male
Female
2 Participants4 Participants2 Participants
Sex: Female, Male
Male
12 Participants17 Participants5 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
2 / 143 / 72 / 2
other
Total, other adverse events
0 / 140 / 70 / 2
serious
Total, serious adverse events
9 / 144 / 71 / 2

Outcome results

Primary

Change in Maximum SUV of Tumors Measured by FDG-PET Post Receipt of 2 Courses of Preoperative Chemotherapy

Change in maximum SUV of tumors measured by FDG-PET. Comparison conducted using a two-sided Wilcoxon rank sum test.

Time frame: From baseline to 8 weeks

Population: 8 week PET not done on one Pazopanib participant.

ArmMeasureValue (MEDIAN)
PazopanibChange in Maximum SUV of Tumors Measured by FDG-PET Post Receipt of 2 Courses of Preoperative Chemotherapy-1.1 SUV
PlaceboChange in Maximum SUV of Tumors Measured by FDG-PET Post Receipt of 2 Courses of Preoperative Chemotherapy-4.0 SUV
p-value: 0.13Wilcoxon (Mann-Whitney)
Primary

Change in Maximum SUV of Tumors Measured by FDG-PET Pre- and Post Receipt of Pazopanib Versus Placebo

Change in maximum SUV (standardized uptake value) of tumors measured by FDG-PET. Comparison conducted using a two-sided Wilcoxon rank sum test.

Time frame: From baseline to 15 days

ArmMeasureValue (MEDIAN)
PazopanibChange in Maximum SUV of Tumors Measured by FDG-PET Pre- and Post Receipt of Pazopanib Versus Placebo-0.1 Standardized uptake value-SUV
PlaceboChange in Maximum SUV of Tumors Measured by FDG-PET Pre- and Post Receipt of Pazopanib Versus Placebo-0.1 Standardized uptake value-SUV
p-value: 0.4Wilcoxon (Mann-Whitney)
Primary

Pharmacokinetic Profile of Pazopanib

Trough plasma pazopanib concentration measured during the 14 day run-in period on days 10 through 14.

Time frame: Up to 14 days

ArmMeasureValue (MEAN)Dispersion
PazopanibPharmacokinetic Profile of Pazopanib56.38 ng/mLStandard Deviation 0.94
PlaceboPharmacokinetic Profile of Pazopanib0 ng/mLStandard Deviation 0
Primary

Tumor Response by RECIST Criteria

RECIST measurements will be performed on serial MRIs to evaluate the correlation with FDG-PET. The longest diameter (LD) of the target lesions will be measured and reported as the baseline LD. The baseline LD will be used as reference to further characterize the objective tumor response of the measurable dimension of the disease.Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Progression (PD), a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions

Time frame: At 8 weeks

Population: 8 week MRI not done on one Placebo patient.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
PazopanibTumor Response by RECIST CriteriaStable Disease11 Participants
PazopanibTumor Response by RECIST CriteriaProgressive Disease2 Participants
PazopanibTumor Response by RECIST CriteriaPartial Response1 Participants
PlaceboTumor Response by RECIST CriteriaStable Disease5 Participants
PlaceboTumor Response by RECIST CriteriaProgressive Disease0 Participants
PlaceboTumor Response by RECIST CriteriaPartial Response1 Participants
Primary

Tumor Response by RECIST Criteria

RECIST measurements will be performed on serial MRIs to evaluate the correlation with FDG-PET. The longest diameter (LD) of the target lesions will be measured and reported as the baseline LD. The baseline LD will be used as reference to further characterize the objective tumor response of the measurable dimension of the disease.Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the longest diameter of target lesions; Progression (PD), a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions

Time frame: At 15 days

Population: Per RECIST v1.0 for target lesions and assessed by MRI: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>=30% decrease in the sum of the LD of target lesions; Progression (PD),20% increase in the sum of the LD of target lesions,or measurable increase in a non-target lesion,or appearance of new lesions.,

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
PazopanibTumor Response by RECIST CriteriaStable Disease14 Participants
PazopanibTumor Response by RECIST CriteriaProgressive Disease0 Participants
PlaceboTumor Response by RECIST CriteriaStable Disease6 Participants
PlaceboTumor Response by RECIST CriteriaProgressive Disease1 Participants
Secondary

Change in Levels of VEGF and Soluble VEGFR2 Assessed by ELISA on Plasma and Tumor Extracts

Plasma will be collected for measurement of VEGF and soluble VEGFR2 (sVEGFR2) at baseline, after the 14 day Run-in period of pazopanib, after completion of neoadjuvant chemotherapy and approximately every 3 months thereafter until completion of pazopanib maintenance therapy, when indicated. Quantitative enzyme-linked immunosorbent assays (ELISA) for VEGF and sVEGFR2 will be performed on plasma and tumor extracts. Plasma will also be collected for micro RNA at baseline, after the 14 day Run-in period of pazopanib, following neoadjuvant chemotherapy and every 3 months thereafter until completion of pazopanib maintenance therapy, when indicated.

Time frame: At baseline and after 14 days

ArmMeasureValue (NUMBER)
PazopanibChange in Levels of VEGF and Soluble VEGFR2 Assessed by ELISA on Plasma and Tumor ExtractsNA percentage of concentration
PlaceboChange in Levels of VEGF and Soluble VEGFR2 Assessed by ELISA on Plasma and Tumor ExtractsNA percentage of concentration
Secondary

Number of Participants With Pathologic Response at the Time of Surgery as Measured by % Tumor Viability ( >= 95% Necrosis)

Estimate the amount of viable tumor, and report the percentage of necrosis. Analysis was only completed on a subset of participants.

Time frame: An expected average of 12 weeks

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PazopanibNumber of Participants With Pathologic Response at the Time of Surgery as Measured by % Tumor Viability ( >= 95% Necrosis)6 Participants
PlaceboNumber of Participants With Pathologic Response at the Time of Surgery as Measured by % Tumor Viability ( >= 95% Necrosis)6 Participants
Secondary

Overall Survival

Defined as the interval of time from randomization until death from any cause.

Time frame: Up to 3 years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PazopanibOverall Survival12 Participants
PlaceboOverall Survival4 Participants
Secondary

Progression Free Survival

Defined as the duration of time from randomization to progressive disease (per RECIST), local recurrence, distant metastatic disease (exclusive of stage IV subjects), or death, whichever occurs first.

Time frame: Up to 3 years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PazopanibProgression Free Survival10 Participants
PlaceboProgression Free Survival4 Participants

Source: ClinicalTrials.gov · Data processed: Mar 14, 2026