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About
This randomized phase I trial is studying the side effects, such as high blood pressure, and best dose of sorafenib in treating patients with advanced solid tumors. Sorafenib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth and by blocking blood flow to the tumor.
Full description
PRIMARY OBJECTIVES:
I. Determine whether increasing the dose of sorafenib tosylate increases the plasma steady-state concentration in patients with advanced solid tumors.
II. Determine whether increasing the dose of this drug affects blood pressure in these patients.
SECONDARY OBJECTIVES:
I. Determine whether the variability in blood pressure elevation is due to pharmacokinetic or pharmacodynamic variability.
II. Compare the toxicity and differences in pharmacokinetics of delivering a higher dose of this drug per day (using two different schedules) vs delivering the currently recommended dose of this drug.
III. Investigate mechanisms of sorafenib tosylate-induced hypophosphatemia with serial measurements of phosphate metabolism (no longer assessed as of 4/29/2009) in these patients, detailed baseline measurements in all patients, and detailed evaluations of patients developing grade 3 or greater hypophosphatemia.
IV. Detect subclinical effects of this drug on measures of thyroid function. V. Identify biomarkers predicting the categorization of patient response.
OUTLINE: This is a randomized, dose-escalation study.
Patients receive oral sorafenib tosylate twice daily on days 1-7 and once on day 8. Patients not experiencing at least one grade 2 or higher toxicity during the initial sorafenib treatment are randomized to 1 of 3 dose-escalated treatment arms.
ARM I: Patients receive higher-dose oral sorafenib tosylate twice daily on days 15-36.
ARM II: Patients receive standard-dose oral sorafenib tosylate three times daily on days 15-36.
ARM III: (closed to accrual as of 4/29/2009) Patients receive standard-dose oral sorafenib tosylate twice daily on days 15-36.
In all arms, treatment repeats every 3 weeks in the absence of disease progression or unacceptable toxicity.
Patients undergo ambulatory blood pressure monitoring at baseline, on days 7, 14, and 21, and at 6 and 12 months. Blood samples are collected periodically throughout study and evaluated for pharmacokinetic studies, thyroid function, serum markers, and phosphate metabolism*. CT perfusion imaging is performed at baseline, week 6, week 12, and then every 8-12 weeks thereafter.
NOTE: * Phosphate metabolism no longer assessed as of 4/29/2009.
After completion of study treatment, patients are followed every 4 weeks for 1 year and then every 3 months thereafter.
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Inclusion and exclusion criteria
Inclusion Criteria:
Histologically or cytologically confirmed malignant solid tumor
Measurable OR nonmeasurable disease
Normotensive (blood pressure [BP] ≤ 140/90 mm Hg) meeting 1 of the following criteria:
Brain metastases allowed provided the following criteria are met:
ECOG performance status 0-1
Life expectancy > 12 weeks
Age ≥ 14 years OR weight ≥ 45 kilograms (pediatric patients)
Not pregnant or nursing
Negative pregnancy test
Fertile patients must use effective contraception
Hemoglobin ≥ 8.5 g/dL
Absolute neutrophil count ≥ 1,500/mm³
Platelet count ≥ 100,000/mm³
Bilirubin ≤ 1.5 times upper limit of normal (ULN)
AST and ALT ≤ 2.5 times ULN (5 times ULN if there is liver involvement)
Creatinine ≤ 1.5 times ULN
No New York Heart Association class II-IV congestive heart failure
No unstable angina (anginal symptoms at rest) or new-onset angina (began within the past 3 months)
No myocardial infarction within the past 6 months
No ventricular arrhythmias requiring anti-arrhythmic therapy
No thrombotic or embolic events, such as symptomatic pulmonary embolus or any cerebrovascular accident (including transient ischemic attacks) within the past 6 months
No pulmonary hemorrhage/bleeding event > grade 2 within the past 4 weeks
No other hemorrhage/bleeding event > grade 3 within the past 4 weeks
No evidence or history of bleeding diathesis or coagulopathy
No serious nonhealing wound, ulcer, or bone fracture
No ongoing or active infection > grade 2
No psychiatric illness or social situation that would limit compliance with study requirements
No allergy to sorafenib tosylate or excipients
No unstable condition that would jeopardize the safety of the patient and/or her/his compliance with the study
No significant traumatic injury within the past 4 weeks
No condition that would impair the patient's ability to swallow whole pills or capacity to absorb oral medications
No seizure disorder requiring steroids or anticonvulsant therapy
No other concurrent illness
Recovered from prior therapy
Prior vascular endothelial growth factor (VEGF) pathway inhibitor (e.g., bevacizumab, sunitinib malate, axitinib) allowed provided the following criteria are met:
More than 2 weeks since prior and no concurrent radiotherapy
At least 3 weeks since prior and no concurrent chronic epoetin alfa (or congeners)
More than 3 weeks since prior immunotherapy or chemotherapy (6 weeks for nitrosoureas or mitomycin C)
More than 4 weeks since prior major surgery or open biopsy
At least 3 weeks since prior uncharacterized herbal agents or nutritional supplements
More than 12 weeks since prior radioimmunotherapy
No prior sorafenib tosylate
No prior organ allograft or allogeneic bone marrow or peripheral blood stem cell transplantation
No prior cyclosporine, Hypericum perforatum (St. John's wort), or rifampin
No other concurrent investigational agents
No other concurrent antineoplastic therapy, including chemotherapy, except androgen-ablating agents (for patients with prior prostate cancer)
No concurrent hematopoietic growth factors
No concurrent combination antiretroviral therapy for HIV-positive or chronic hepatitis B-positive patients
No concurrent hormonal therapy except steroids for adrenal insufficiency or hormones for nondisease-related conditions (e.g., insulin for diabetes)
No anticipated need for other antineoplastic therapy within the next 4 weeks
Primary purpose
Allocation
Interventional model
Masking
110 participants in 3 patient groups
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Data sourced from clinicaltrials.gov
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