Phase I Trial of Sorafenib + FOLFIRI In Metastatic Colorectal Cancer

Study Overview
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Brief Summary
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The purpose of this study is to assess the safety, the maximum tolerated dose and the recommended dose for phase II studies of a chemotherapy-combination of sorafenib, irinotecan, and 5-fluorouracil (5-FU)/folinic acid (FA) (FOLFIRI) as first-line treatment for metastatic colorectal cancer.

Detailed Description
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A standard phase I dose escalation design with three to six patients per dose level will be used. The first three patients will receive chemotherapy at the dose level 1 for 4 weeks (2 FOLFIRI regimen). The dose will be escalated for the next patients by one dose level if none of the three patients at a dose level experience a dose-limiting toxicity (DLT) during the first six weeks. Intrapatient dose escalation is not allowed. If one of the three patients has a DLT, an additional three patients will be enrolled at this dose level and the dose will be escalated if no additional patients experience a DLT. Otherwise, the dose escalation will be stopped, and the last dose will be regarded as the Maximum Administered Dose (MAD). The preceding dose level will be declared the Maximum Tolerated Dose (MTD). This dose level will be the recommended dose (RD). At least 6 patients will be treated at the MTD. The cohort at the MTD dose level can be expanded to as many as 12 patients to gain experience with the toxicities and efficacy of Sorafenib + FOLFIRI combination over a broad patient range. Patients experiencing a DLT during the first cycle of treatment will have the drug withheld. They will be eligible for repeated treatment at a lower dose or treated off protocol. Treatment is to be discontinued in cases of serious or unmanageable toxicity or request by the patient. Otherwise therapy will continue until clinically or radiologically documented disease progression.

Official Title
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A Phase I Study of Sorafenib (Nexavar®) in Combination With FOLFIRI as First Line Therapy for Metastatic Colorectal Cancer

Conditions
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Metastatic Colorectal Cancer

Intervention / Treatment
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* Drug: sorafenib + FOLFIRI


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Metastatic colorectal cancer Histopathological verification of the primary tumor Measurable disease according to RESIST criteria Response Evaluation Criteria in Solid Tumors (ECOG) performance status ≤ 2 Age > 18 years. Women of childbearing potential must have had a negative pregnancy test within 7 days prior to start of treatment. Women of childbearing potential and men must agree to use adequate contraception prior to study entry and for the duration of study participation. Patients may have had prior adjuvant chemotherapy with fluoropyrimidines WITHOUT pelvic radiotherapy. Radiation: Patients may have had prior palliative radiation therapy to NO more than 50% of the areas bearing of bone marrow stores. Adequate organ and marrow function : Hemoglobin > 9.0 g/dl; absolute neutrophil count (ANC) >1,500/mm3; absolute granulocyte count(AGC) > 1.5 x 109 /L; Platelets > 100 x 109 /L; Serum creatinine and creatinine clearance within upper normal limit; Bilirubin < 1.0 x upper normal limit, < 2.5 x upper normal limit if documented liver metastases; aspartate aminotransferase (AST) < 2.5 x upper normal limit, < 5 x upper normal limit if documented liver metastases Life expectancy > 3 months Informed consent Exclusion Criteria: Previous or concurrent malignancies Patients with central nervous system (CNS) metastases Pregnant or lactating women Concurrent treatment with other experimental drugs or anticancer therapy Previous chemotherapy for advanced and/or metastatic disease Previous adjuvant therapy with irinotecan or targeted agents Previous Sorafenib therapy Previous full dose curative pelvic radiotherapy History of cardiovascular disease, cerebral ischemia infarction or hemorrhage, Gilbert's disease, HIV positivity Unable to be compliant with the procedures in the protocol Currently use prohibited medications

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: sorafenib +FOLFIRI<br>This is a Phase I safety study. There is only one arm of FOLFIRI administered every 14 days (2 week schedule) and sorafenib administered orally, twice daily continuously. First cycle sorafenib began at day +2 to FOLFIRI. | Drug: sorafenib + FOLFIRI<br>* escalating doses of sorafenib and irinotecan sorafenib starting dose 400 mg/day irinotecan starting dose 80 mg/m2 on day 1<br>* Other names: sorafenib - Nexavar;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Toxicity spectrum of Sorafenib (MTD, DLT) and the recommended dose (RD) for phase II studies of Sorafenib when combined with FOLFIRI in first line patients with metastatic colorectal cancer (mCRC) |  | each cycle - 4 weeks; continuous monitoring of AEs | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pharmacokinetics of Irinotecan in the presence of Sorafenib |  | 2 years | 
| Response according to Response Evaluation Criteria in Solid Tumors (RECIST) |  | every 2 cycles - 8 weeks | 
| Time to Progression and Overall Survival |  | each cycle - 4 weeks |