View clinical trials related to Colorectal Neoplasms.
Filter by:Lymph node involvement remains the main criteria for postoperative chemotherapy in patients with colon cancer (CC) without distant metastasis. To date, the prognostic value of the somatic quantitative molecular alterations such as loss or gain of genomic region is not established in CC. AIMS & METHODS: Using the one-step screening method based on the Quantitative Multiplex PCR of Short fluorescent Fragments (QMPSF), we aimed to assess the prognostic role of the simultaneous detection of main quantitative somatic alterations in stage II-III CC. Patients and Methods. We enrolled and collected all baseline characteristics of patients operated for a stage II-III CC with storage frozen tissues. The QMPSF was based on a simultaneous amplification of 9 selected target genomic sequences from literature: DCC (18q21); EGFR (7p12); P53 (17p13.1); BLK (8p23-p22); c-myc (8q24.12); APC (5q22.2); ERBB2 (17q12); STK6 (20q13.31); NR21 (14p11.1) and two control: DCOHM (5q31.1); HMBS (11q23.3). Comparison of each amplicon electropherograms obtained from tumour vs normal peritumoral tissue allowed us to identified gain or loss genomic region. The primary end-point was the local and/or distant recurrence and relation between clinical and single or combined molecular alterations and recurrence were evaluated.
The purpose of the study is to determine the safety, tolerability and maximum tolerated dose of Urelumab in combination with Cetuximab in patients with Advanced/Metastatic Colorectal Cancer or Advanced/Metastatic Squamous Cell Carcinoma of the Head and Neck.
To investigate and collect post-marketing data on the safety of Stivarga in real world practice in its registered indication(s) as required by Health Authority.
Objective: To determine the oxidative stress during cycles of chemotherapy in patients after surgery for colorectal cancer, with or without oral zinc supplementation. Subjects: Twenty four adults from both genders participated in this study. All patients underwent stage II, III or IV colorectal cancer surgical resection and were starting chemotherapy in HCFMRP- USP. Patients were randomized into two groups. The first one (QTx-Zn Group, n=10) received 70 mg/d of zinc orally and the second one received placebo (QTx-Placebo Group, n=14) for 16 weeks. The study also included 30 healthy volunteers matched for age, gender and socioeconomic status, who received 70 mg/d of zinc supplement (Control-Zn Group, n=21) or placebo (Control-Placebo Group, n=9) for 16 weeks. Methods: The questionnaires about dietary intake (semiquantitative food frequency and food record), fatigue and quality of life (FACIT-F) and questionnaires that assess the side effects of chemotherapy (CTCAE) were evaluated. Anthropometry and bioelectrical impedance measurements were made. Blood collection was performed before the 1st, 2nd, 3rd and 4th cycles of chemotherapy (median duration of 21 days among cicles). Routine laboratory tests, vitamin E and markers anti and pro-oxidants (MDA, SOD, GPx and isoprostane) ere determined. The control group underwent the same procedures, except for chemotherapy. A longitudinal linear mixed effects model was adjusted for each of the variables of interest. The models were fitted using PROC MIXED of SAS version 9 (SAS, CARY, NC, USA). To analyze the association of categorical variables in the different items of the CTCAE, the investigators used the Fisher exact test. Results: The oral zinc supplementation was sufficient to increase plasma levels of zinc and did not alter food intake, body composition and routine laboratory evaluation of patients undergoing chemotherapy for colorectal cancer. Compared with QTx-Placebo Group, QTx-Zn Group showed lower prevalence of complaint on the salivary gland (17 vs. 75%). Fatigue (43 ± 6 vs. 36 ± 13) and quality of life (126 ± 160 vs. 116 ± 27) has become worst in the period between the 1st and 4th cycles of QTx in QTx-Placebo Group. When compared with QTx-Placebo Group, QTx-Zn Group had higher values of SOD before the 1st (2297 ± 503 vs. 1604 ± 352 USOD/g Hb), 2nd (2037 ± 515 vs. 1712 ± 417 USOD/g Hb) and 4th (2202 ± 323 vs. 1821 ± 360 USOD/g Hb) cycles of QTx. GPx values decreased in QTx-Zn Group before the 3rd cycle of QTx (48.5 ± 7.0 vs. 54.3 ± 2.3 mol NADPH/min/gHb). Conclusions: These data suggest that zinc supplementation reduces complaints related to the change in salivary gland, preserving the quality of life and preventing the worsening of fatigue. The increase in SOD can be attributed to zinc supplementation per se, whereas this mineral is a cofactor that endogenous antioxidant enzyme. The highest activity of SOD increases the production of H2O2, whose detoxification involves the participation of GPx, justifying its reduction. There were no changes in plasma levels of vitamin E, MDA and isoprostane during the study period. Considering the values of MDA and isoprostane, the data indicate that regardless of zinc supplementation, the lipid peroxidation of the cell membrane was unchanged during chemotherapy.
The purpose of this study is to evaluate the safety and efficacy of Abraxane (nab-paclitaxel) in subjects with previously treated metastatic colorectal cancer. Subjects will be placed into two separate cohorts based on their RAS mutation status.
The aim of the study is to determine if more force is used during colonoscopy when patients receive monitored anesthesia with propofol versus conscious sedation. Force measurements will be performed using the colonoscopy force monitor (CFM). This device measures the magnitude and direction of force applied to the insertion tube of a standard colonoscope during colonoscopy.
This randomized clinical trial studies narrative or fact-based videos in increasing colorectal cancer screenings in African American communities. Informational videotapes may help increase the number of participants who engage in colonoscopy screenings. It is not yet known whether narrative videos may be more effective than fact-based videos in increasing colorectal cancer screenings.
This two-stage study is designed to compare the safety and activity between RRx-001 against regorafenib followed by irinotecan-based therapies in a parallel comparative study. Patients who are suffering from advanced or metastatic (meaning the disease has spread) colorectal cancer are invited to participate in this study. There will be two groups of patients (Randomized, open label study), one of these will receive RRx-001 and the other one will receive regorafenib. If patients qualify to participate in this study, they will be randomly assigned to the 'interventional arm' where patients will receive the experimental drug, RRx-001, or the 'control arm' where they will receive the current standard-of-care, Regorafenib. Patients have a 66% chance (2 out of 3) of receiving RRx-001 and a 33 % chance (1 out of 3) of receiving regorafenib. On progression in the first part of the study, provided ECOG performance status is adequate, and if clinically appropriate i.e. there are no absolute or relative contraindications in the opinion of the Investigator, all subjects will enter the second part of the study and receive irinotecan plus bevacizumab. Whether patients are given RRx-001 or regorafenib, they will also receive best supportive care, which includes treatments to help manage side effects and symptoms of cancer. This is an open label study, which means patients will know to which of these treatments, RRx-001 or regorafenib, they are assigned.
The metastatic colon cancer is a major public health problem despite advances in chemotherapy; few new drugs are in development for the treatment of this pathology. Many studies have shown that human colon cancer is a tumor that is recognized by the immune system and the presence of lymphocytic infiltrates in the tumor bed is associated with a better prognosis. Conversely, the effect of chemotherapy on the immune response is little studied. Recently the importance of myeloid suppressor cells (MDSC) in the development of colon cancer and the effect of 5- fluorouracil on this cell population has been highlighted. An accumulation of these cells in the blood and lymphoid organs during tumor progression is observed. Moreover, it has been established that the death of MDSC induced by 5-fluorouracil induces activation of caspase -1 and IL-1beta by these MDSC. These events promote the polarization of CD4 T cells in intratumoral Th17 lymphocytes. The IL- 17 produced by these cells exerts a pro-angiogenic effect in inducing proliferation of endothelial cells expressing and thus limits the effect of 5- fluorouracil endoglin. In humans, it has also been observed that chemotherapy using 5- fluorouracil and in particular LV5FU2 association +/- bevacizumab induces rapid death of blood MDSC as well as activation of caspase 1 in these cells. Thus, production of IL - 1 is detected in the serum of patients after 24 hours of the administration of 5-fluorouracil. Chronic inflammation and the production of interleukin- 1 can alter the effectiveness of anti -tumor immune responses and facilitate angiogenesis. Many preclinical data suggest a role of anti -tumor inhibition of IL- 1beta, but the effect of a combination of chemotherapy and an inhibitor of IL - 1beta has not yet been tested in human. Anakinra is a drug used in humans for many years to treat signs and symptoms of rheumatoid arthritis. In combination with methotrexate, in patients whose response to methotrexate alone is not satisfactory it had shown interesting results. The dose used clinically is 100 mg per day which is the dose that is proposed to be tested in this study. In this context it should be remembered that methotrexate is a chemotherapeutic agent from the class of antimetabolites such as 5- fluorouracil. RCP of this drug indicate that in studies originator toxicity was similar between the control arm and anakinra arm with an increase in serious infections (1.8 % vs 0.7 %) and an increased incidence of neutropenia (2.5 % neutropenia > grade = 1). The main toxicity observed is a painful inflammatory reaction at the injection site in 70 % of patients The investigators believe that this project could permit to validate in man preclinical observations showing an anti-tumor potential for combination anakinra and 5 fluorouracil.
The efficacy and safety of panitumumab (Vectibix) in the routine clinical setting will be studied. Specifically, information will be collected on the following as events of interest: skin disorders, interstitial lung disease, infusion reactions, electrolyte abnormalities, and cardiac disorders.