View clinical trials related to Rectal Cancer.
Filter by:The iCaRe2 is a multi-institutional resource created and maintained by the Fred & Pamela Buffett Cancer Center to collect and manage standardized, multi-dimensional, longitudinal data and biospecimens on consented adult cancer patients, high-risk individuals, and normal controls. The distinct characteristic of the iCaRe2 is its geographical coverage, with a significant percentage of small and rural hospitals and cancer centers. The iCaRe2 advances comprehensive studies of risk factors of cancer development and progression and enables the design of novel strategies for prevention, screening, early detection and personalized treatment of cancer. Centers with expertise in cancer epidemiology, genetics, biology, early detection, and patient care can collaborate by using the iCaRe2 as a platform for cohort and population studies.
This trial will enroll patients with locally advanced rectal cancer (resectable and non-resectable).The phase Ib dose escalation portion of trial is designed to determine the maximum tolerated dose (MTD) of CRLX101 when combined with standard neoadjuvant therapies capecitabine (Cape) and radiation therapy (XRT). CRLX101 is a nanopharmaceutical (NP) formulation of camptothecin. These results will determine the recommended phase II dose (RP2D) for CRLX101 in this setting. The phase II portion of the trial is designed to evaluate the efficacy and safety of CRLX101 at the RP2D, when combined with capecitabine and radiation therapy prior to surgery.
The study is designed to test the hypothesis that patients with Locally advanced rectal cancer ( LARC) treated with Total neoadjuvant therapy (TNT) and Total mesorectal excision (TME) or Non-operative management (NOM) will have an improved 3-year disease-free survival (DFS) compared to patients with similar tumors treated with Chemoradiation therapy (CRT), Total mesorectal excision (TME) and Adjuvant chemotherapy (ACT).
The aim of this study is to monitor by microdialysis the postoperative outcomes in order to identify anastomotic leaks after rectal surgery.
In patients with rectal cancer, an anterior resection with a colo-rectal or colo-anal anastomoses is the gold standard. However, in patients with a weak sphincter and fecal incontinence or in patients with severe co-morbidity and reduced general condition, this operation is not suitable. In these situations there are two other radical surgical options, Hartmanns procedure and the Abdominoperineal excision that can be performed with intersphincteric dissection to minimise perineal complications.There are no data on which of these procedures that are best suited for these patients with fecal incontinence or severe co-morbidity( at risk for life-threatening anastomotic leak). In this randomized study we intend to compare postoperative complications within 30 days after these two procedures and also late complications and quality of life after one year postoperatively.
Several studies have shown that tumour hypoxia may have a negative impact on the outcome of anticancer treatment. Assessment of tumor hypoxia at baseline or shortly after start of treatment may serve as a predictive marker to determine treatment efficacy at an early stage. Preferably, such an assessment is performed in vivo and non-invasively.Non-invasive imaging with positron emission tomography (PET) using the 2-nitroimidazole nucleoside analogue, 3-18F-fluoro-2-(4-((2-nitro-1H-imidazol-1-yl)methyl)-1H-1,2,3-triazol-1- yl)propan-1-ol (18F-HX4), was tested as a new marker of tumor hypoxia. Before hypoxia-measurements can be clinically implemented for response prediction, the reproducibility of the technique should be assessed for each specific tumor type. Knowledge of reproducibility is needed to determine what change in parameters between two examinations can be considered relevant in an individual patient. Assessment of reproducibility becomes even more important in early response monitoring since the changes in the tumor induced by the treatment may be smaller during the treatment compared to response monitoring after completion of treatment. Also, as image quality of 18F-HX4-PET increases with increasing time intervals after injection, determination of the optimal time point for measurement of hypoxia is warranted.
Colorectal neoplasms are the third most common malignancies in the United States. Patients with metastatic (stage IV) colorectal cancer have a median life expectancy of 2 years. The response rates to chemotherapy range from 35-40%. Epidemiologic evidence suggests that soy compounds may reduce the incidence of colorectal cancers. Laboratory analyses demonstrate that genistein, a soy-derived compound, may inhibit Wnt signaling, a pathway activated in majority of colorectal cancers. Laboratory observations also demonstrate that genistein may augment growth inhibition when combined with chemotherapeutic agents of 5-Fluorouracil and platinum compounds. Based on pre-clinical data the investigators hypothesize that combining genistein with the standard of care chemotherapeutic regimens will reduce chemotherapy resistance and improve response rates in patients. The aim of the study is to add genistein to the regimens of FOLFOX or FOLFOX-Avastin in patients with newly diagnosed stage IV colon or rectal neoplasms.
In this study, the investigators assessed the difference in efficacy and safety among robotic-assisted versus laparoscopic abdominoperineal resection for patients with low rectal cancer.
To improve rectal cancer management, there is a need for better visualization of drug targets in rectal cancer to identify patients who might benefit from specific targeted treatments. Molecular imaging of rectal cancer associated targets is a promising technique to accommodate this need. Vascular Endothelial Growth Factor (VEGF), which is differentially expressed in normal versus malignant colon tissue, has proven to be a valid target for molecular imaging. Fluorescent labeling of bevacizumab (a VEGF targeting humanized monoclonal antibody currently used in anti-cancer therapy) using IRDye800CW (a fluorescent dye) has potential advantages in view of safety, infrastructure, costs, stability and imaging resolution. Therefore, the fluorescent tracer bevacizumab-IRDye800CW has been developed at the University Medical Center Groningen (UMCG) and was recently approved to be administered to patients in a tracer dose. To detect this tracer in vivo in patients with colorectal cancer, a newly developed flexible near-infrared (NIR) fluorescence endoscope and optoacoustic endoscope have been developed which can be used in clinical studies. Optical fluorescence imaging may support response evaluation following chemoradiotherapy and give insight which patient might benefit from anti-VEGF targeted therapy in future studies.
Randomized controlled trial in which the effect is investigated of a radiation boost in addition to standard chemoradiation in patients with locally advanced rectal cancer on complete response rate defined as pathological complete response, in those who undergo surgery, or 2-years local recurrence-free survival (2y-LRFS), in those who opted for a wait and see approach. Secondary objectives are adverse events due to chemoradiation (acute, perioperative and late toxicity), tumor response assessed with MRI, the impact of the boost on local and distant recurrence and survival as well as patient-reported quality of life and workability. The need for this comprehensive study is emphasized by the sub-optimal (radiation-) methods, heterogeneity between and poor reporting in the few previous trials in this field.