View clinical trials related to Rectal Cancer.
Filter by:This study will evaluate whether the addition of Rosuvastatin to standard chemoradiation therapy for the treatment of locally advanced rectal cancer may improve the pathological response rate and survival compared to standard chemoradiation therapy alone.
The incidence of rectal cancers is at 15,000 new cases per year in France of which 10 to 15% are locally advanced (T4bNxM0) at the moment of diagnosis. The rate of invaded resection margins (R1) for these locally advanced and fixed rectal tumours varies from 10 to 20%. The invasion of the resection margins triples the risk of local recurrence. In the absence of surgical treatment, the 5-year survival rate for patients having had pelvic recurrence of rectal cancer is lower than 4% whereas it varies from 35 to 40% in cases of curative resection. The care and management of locally advanced and fixed rectal tumours and pelvic recurrence of rectal cancer constitutes, therefore, in the absence of recommendation, a difficult therapeutic problem with great variability in the methods of care and management around the world. These variations in practice can be explained by structural and organizational differences, as well as cultural dissimilarities. With regards to the organization of its healthcare system, Australia is shown to be a leader as regards the care and management of locally advanced and fixed rectal tumours and pelvic recurrence of rectal cancer.
INTRODUCTION: Transanal TME (T-TME) combined with laparoscopy, called hybrid-NOTES, is a less invasive procedure that responds to some of the limitations of the rectal laparoscopic approach. MAIN OBJECTIVE: To analyze that the T-TME gets a faster recovery due to a lower conversion rate to open surgery than laparoscopic low anterior resection (L-LAR) in rectal cancer with the same pathological, functional and oncologic results. METHODOLOGY: A prospective multicenter randomized controlled study of patients with rectal cancer that, were randomized in the T-TME- and L-LAR group. The main variables are: general morbidity, anastomotic dehiscence, conversion rate to open surgery and hospital stay. The sample calculation is 58 patients per group.
The primary goal of this Brown University Oncology Research Group is to determine that a safe dose of BYL719 can be administered with capecitabine and radiation in patients with rectal cancer. Therefore, the threshold of success for this phase I study is to establish safety.
Preoperative radiotherapy in locally advanced rectal cancer increases the possibility of complete resection and anal sphincter preservation. However, a treatment period of from 5 to 6 weeks is an obstacle of proper surgical intervention. Also, radiotherapy itself is confronting challenges for maximizing the therapeutic effect and minimizing the side effects. Electro-hyperthermia is appropriate treatment method to solve these kinds of problems. In this clinical trial, therapeutic effect of the high-frequency electro-hyperthermia is to be verified during preoperative radiotherapy for locally advanced rectal cancer. The ultimate goal is to establish a safe and effective treatment protocol.
Early cancers of the rectum can be removed safely through the anus without subjecting patients to major abdominal surgery in a procedure called TEMS (transanal endoscopic microsurgery). Patients undergoing TEMS can benefit from reduced mortality, impotence, hospital stay and avoiding a stoma that may be associated with pelvic surgery. Currently few of the patients eligible for TEMS are offered it for a variety of reasons that include uncertainties about the risk of leaving residual tumour and the increased risk of subsequent recurrence of cancer within the pelvis. Current UK guidelines state there is no role for imaging in assessing the malignant polyp. Conversely whilst retrospectively reviewing their MRI databank the investigators have found evidence that MRI can accurately judge the depth of these early tumours and thereby potentially identify patients for local excision. The investigators hope to prospectively test their hypothesis that an MRI scan can accurately gauge depth of tumour spread in an unselected group of benign and malignant tumours measuring between 20mm and 50mm in size. The investigators will identify eligible patients awaiting surgery / polypectomy and if they consent to this pilot study participants will undergo an MRI to assess their tumour which assesses safety at all levels of the rectal wall. The accuracy of MRI can then be established by reference to gold standard histopathology. Should MRI prove sensitive and specific then the investigators hope to change national guidelines to mandate MRI to standardise assessment and thereby increase the appropriate use of TEMS in the UK.
The purpose of this study is to estimate the rate of patients in whom a significant change in the area to be irradiated will be observed between the assessment before and after laying the evaluation of Trustees.
Standard treatment of rectal cancer is rectal excision with neoadjuvant radiochemotherapy. A new concept suggests organ preservation as an alternative to rectal excision in good responders after neoadjuvant radiochemotherapy to decrease surgical morbidity and increase quality of life. The rational is the fact that 15% of patients have sterilized tumours after radiochemotherapy for T3T4 rectal cancer. The French GRECCAR 2 trial is the first phase III trial investigating this strategy: patients with T2T3 low rectal carcinomas (size ≤4 cm) received 50 Gy with capecitabine and good clinical responders (≤2 cm) were randomized between local and rectal excision. The main findings were: the rate of complete pathologic response was higher after radiochemotherapy for small T2T3 than for T3T4 tumours (40% vs 15% ypT0) and good pathologic responders (ypT0-1) were associated with zero positive mesorectal nodes. The objective of the new trial is to increase the proportion of patients treated with organ preservation by optimizing tumour response. As compared to Folfiri, tritherapy Folfirinox has been shown to enhance the response rate. In patients with colorectal metastases, response rate and R0 resection were twice higher, resulting in improved survival. Folfirinox also increases response and chance of R0 resection rates in initially unresectable colorectal metastases, compared to standard or intensified bi-chemotherapy regimens. Adding two months of neoadjuvant chemotherapy (Folfirinox) before radiochemotherapy, the investigators expect to increase chance of organ preservation rate, as compared to radiochemotherapy alone.
A randomized trial comparing weather preoperative short-course radiotherapy with local boost is better than conventional preoperative short-course radiotherapy for local advanced rectal cancer.
The purpose of this study is evaluation of the safety and the efficacy of transanal local excision in patients with cT3 rectal cancer which was downstaged into ycT0-1 after neoadjuvant chemoradiotherapy.