Active clinical trials for "Colorectal Neoplasms"

In this national Phase I dose-escalation study the safety and tolerability of AP 12009 is evaluated in adult patients with advanced tumors known to overproduce TGF-β2, who are not or no longer amenable to established therapies.

Standard treatment of metastatic colorectal cancers relies on fluoropyrimidines, irinotecan alone or in association with fluoropyrimidines, oxaliplatin in association with fluoropyrimidines, bevacizumab and anti EGFR antibodies. After failure of classical regimen the national reference frame on the basis of phase II study proposes an association of fluoropyrimidine and mitomycin. These treatments give response rates of 10-20% with progression free survivals from 2 to 3 months. Hepatic intra-arterial chemotherapy is logical in the case of isolated hepatic metastases nonaccessible to curative resection: 1) hepatic metastases are vascularized by hepatic arterial system in contrast to nontumoral hepatic parenchyma; 2) arterial perfusion of oxaliplatin leads to a strong extraction by the liver during the first passage, a high intra-tumoral concentration and a low systemic concentration. So oxaliplatin is a drug of choice for arterial treatment but combination with fluoropyrimidines is impossible because of need for prolonged perfusion. Floxuridin is not available in France. Raltitrexed, a definitive inhibitor of the thymidylate synthase, does not require a prolonged perfusion and could be a good substitute.In a previous pilot study we demonstrated the feasibility, safety and efficacy of combination of raltitrexed and oxaliplatin arterial perfusion. Now we propose a phase II randomized clinical trial to evaluate the efficacy of hepatic arterial infusion of raltitrexed and oxaliplatin association versus standard chemotherapy for patients with metastases of colorectal origin restricted to the liver after failure of conventional chemotherapy.

Background: - MK-2206 and AZD6244 (Selumetinib) are experimental cancer treatment drugs that block the effect of certain proteins that cancer cells need to grow and survive. These drugs may be effective treatments for some types of colorectal cancer that has not responded to or has relapsed after standard treatment. Researchers are interested in studying how MK-2206 and AZD6244 affect levels of certain proteins in colorectal cancer tumor, and how well the drugs work against cancer cells by examining cells from a tumor sample collected before the drugs are given and again after the drugs are given. Objectives: - To evaluate the safety and effectiveness of MK-2206 and AZD6244 in individuals with advanced colorectal carcinoma that has not responded to standard treatments. Eligibility: - Individuals at least 18 years of age who have been diagnosed with advanced colorectal carcinoma that has not responded to at least one type of standard chemotherapy. Design: Participants will be screened with a physical examination, medical history, blood tests, and tumor imaging studies. Participants will take MK-2206 and AZD6244 by mouth for 4-week cycles of treatment, with one dose of MK-2206 per week and one dose of AZD6244 every day. (If participants have negative side effects from the medications, the doses will be adjusted to a smaller dose). Participants will keep a diary to record doses and keep track of any side effects. During treatment, participants will have regular visits to the clinical center, involving blood and urine tests, tumor biopsies, and other examinations to monitor the effects of treatment. Participants will have imaging studies every two cycles (8 weeks) to study the cancer's response to the treatment. Participants will continue to have cycles of treatment for as long as the treatment continues to be effective and the side effects are not severe enough to stop participation in the study....

The purpose of this study is to investigate the therapeutic effect and the safety of high-dose vitamin D supplementation in metastatic colorectal cancer patients. We propose to supplement metastatic (stage 4) colorectal cancer patients with oral doses of vitamin D to raise serum 25-hydroxy-vitamin D [25(OH)D] levels to the high normal range of 200-250 nmol/L. The primary objective of this study is to evaluate the metabolic consequences, including tolerability and toxicity, of prolonged, high-dose physiological vitamin D in patients with colorectal cancer. The secondary objective is to evaluate patient survival with regards to high-dose vitamin D supplementation. Hypothesis: Whereas low doses of vitamin D reportedly play a significant role in prevention of colorectal cancers, do much larger (pharmacological) doses of vitamin D have a significant therapeutic effect against the same kind of cancer?

This study will assess the efficacy and safety of treatment with the combination Avastin (bevacizumab) 5mg/kg iv every 2 weeks, Xeloda (capecitabine) 1000 mg po b.i.d. on Days 1-14 of every 28-day cycle and oxaliplatin 40mg/m2 iv weekly in patients with inoperable locally advanced or metastatic colorectal cancer. The anticipated time on study treatment is until disease progression.

This randomized (2:1), multi-center, placebo-controlled, phase II efficacy study is designed to compare PFS between regorafenib + FOLFIRI chemotherapy (ARM A) versus placebo + FOLFIRI (ARM B) in patients with mCRC previously treated with a FOLFOX regimen.

This randomized, multicenter, open label study will evaluate the safety and efficacy of RO5083945 in combination with FOLFIRI as compared to FOLFIRI plus cetuximab or FOLFIRI alone as second line treatment in patients with metastatic colorectal cancer. Patients will be randomized to receive RO5083945 (1400 mg intravenously on Day 1 and Day 8 and every 2 weeks thereafter) plus FOLFIRI standard iv chemotherapy or FOLFIRI plus cetuximab (400 mg/m2 iv on Day 1 followed by 250 mg/m2 iv every week) or FOLFIRI alone. Anticipated time on study treatment is until disease progression or unacceptable toxicity occurs.

The purpose of this study is to determine whether treatment with Selumetinib (AZD6244) (Hyd-Sulfate) in combination with Irinotecan as a second treatment in patients with K-ras or B-raf mutation will prevent tumor progression and prolong progression free survival.

This is an open-label, multi-center, dose-finding study of tivozanib administered in combination with capecitabine. During the dose-escalation portion, sequential cohorts of subjects with advanced solid tumors will be enrolled in order to establish the maximum tolerated dose (MTD). If the MTD is not reached, the recommended Phase 2 dose (RP2D) will be determined. In the expansion cohort, subjects with locally advanced or metastatic breast or colon cancer will be enrolled at MTD (or RP2D) to further evaluate safety and activity of this combination in these tumor types.

The primary objective of this study is to evaluate the efficacy of Irinotecan in combination with FOLFOX+Bevacizumab versus FOLFOX+Bevacizumab alone in the first-line treatment of patients with metastatic colorectal cancer.