View clinical trials related to Rectal Neoplasms.
Filter by:This is a prospective multicenter randomized controlled trial study. According to the enrollment criteria, patients with locally advanced rectal cancer who need neoadjuvant therapy before radical surgery were randomly divided into the organoids drug sensitivity group and the standard whole-course neoadjuvant therapy group. The Organoids drug sensitivity group was treated with personalized neoadjuvant therapy under the guidance of tumor organoids drug sensitivity technology combined with standard long-term radiotherapy. The standard whole-course neoadjuvant therapy group was treated with neoadjuvant simultaneous radiotherapy and chemotherapy (Total Neoadjuvant Therapy, TNT) based on guidelines and clinical experience. The tumor pathological complete remission rate (pCR), postoperative complication rate, postoperative tumor withdrawal grade, postoperative recurrence rate, treatment tolerance rate, R0 resection rate, and sphincter preservation rate were observed and compared.
An interventional, prospective IVD device study for the testing of DNA extracted from tumor tissue biopsy samples from patients with Colorectal Cancer (CRC) who have previously tested positive for the KRAS G12C mutation for potential inclusion into the Amgen Phase III clinical trial (Protocol No 20190172) to demonstrate clinical performance of the therascreen® KRAS RGQ PCR Kit
- In this longitudinal study, 171 patients were evaluated and compared based on the radiation therapy they received. - Bowel function was assessed longitudinally with Memorial Sloan Kettering Cancer Center and Wexner scores every 6 months after restoration of bowel continuity. Patients with at least two follow-up visits were included.
The incidence rate of colorectal cancer is third in male tumors and second in female tumors. The newly diagnosed incidence of colorectal cancer is no less than 100 thousand in China, which poses a great threat to people's health and a heavy burden of public health. Preoperative neoadjuvant radiotherapy and chemotherapy combined with radical surgery is recommended for locally advanced rectal cancer. Low rectal cancer accounts for about one third of all rectal cancer cases. Due to the particularity of its location，surgical complications and postoperative patients need permanent colostomy (artificial anus) to solve the defecation problems, which has a serious impact on the patients' work and life. How to improve the quality of life of patients without reducing the survival rate has become an important topic in the treatment of low rectal cancer. Previous studies have shown that the prognosis of patients with pathological complete remission (pCR) after neoadjuvant chemoradiotherapy for rectal cancer is optimistic. The clinical efficacy of "observation and waiting" is good. The results of small sample exploratory clinical studies of radical radiotherapy and chemotherapy for low rectal cancer are satisfactory, and MR-linear accelerator can be used for precision radiotherapy for colorectal cancer. This study is aimed to explore the efficacy and safety of radical radiotherapy boost for low rectal cancer by using magnetic resonance guided radiotherapy system, and further evaluate the impact of boost on the quality of life of patients.
A study to investigate if pelvic side wall lymph nodes that remain after neo-adjuvant chemoradiotherapy can be identified intraoperatively using dual radioisotope and fluorescence guidance.
This retrospective study aims to investigate whether initial imaging characteristics of rectal cancer on Magnetic Resonance Imaging (MRI) correlate with the underlying tumour pathology and oncological outcomes such as response to treatment. Using radiomic features, calculated using new high throughput analysis of previously acquired imaging, a statistically robust prognostic model will be created with the overall aim of developing imaging biomarkers.
Colorectal cancer is common with an annual prevalence of 6000. The majority can be cured and the five year survival rate is over 60%. In december 2019 reports came in about SARS-Cov-2, which later was named Covid-19. The World Health Organization classified it as a pandemic in March 2020. In Sweden the number of patients with Covid-19 increased mainly in the urban areas in March 2020. Care for patients with other diseases were affected and local changes from guidelines were adopted. In some regions and countries the indications for adjuvant and neoadjuvant treatment for colorectal cancer were somewhat changed. The number of patients diagnosed with colorectal cancer also decreased, as well as other types of cancer. The true effect on outcome with a delayed diagnosis remains unknown. The aim of this study is to evaluate the effects of the Covid-19 pandemic on the diagnosis, treatment and survival of patients with colorectal cancer.
Currently, low concordance (36%) is found between clinical complete response and pathologic complete response in patients with rectal cancer after neoadjuvant chemoradiotherapy. Probe-based confocal laser endoscopy (pCLE) provides a promising targeted optical biopsy to evaluate the response to neoadjuvant chemoradiotherapy. The aim of this study is to investigate whether pCLE-targeted optical biopsy can improve the accuracy of preoperative endoscopic biopsy for local rectal scars in rectal cancer patients after neoadjuvant chemoradiotherapy.
This phase II trial tests whether adding nivolumab to the usual treatment (encorafenib and cetuximab) works better than the usual treatment alone to shrink tumors in patients with colorectal cancer that has spread to other places in the body (metastatic) or that cannot be removed by surgery (unresectable) and whose tumor has a mutation in a gene called BRAF. Encorafenib is in a class of medications called kinase inhibitors. It is used in patients whose cancer has a certain mutation (change) in the BRAF gene. It works by blocking the action of mutated BRAF that signals cancer cells to multiply. This helps to stop or slow the spread of cancer cells. Cetuximab is in a class of medications called monoclonal antibodies. It binds to a protein called EGFR, which is found on some types of cancer cells. This may help keep cancer cells from growing. Immunotherapy with monoclonal antibodies, such as nivolumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving nivolumab in combination with encorafenib and cetuximab may be more effective than encorafenib and cetuximab alone at stopping tumor growth and spreading in patients with metastatic or unresectable BRAF-mutant colorectal cancer.
The purpose of this study is to explore whether rectal artery infusion chemotherapy combined with anti-PD1 antibody is an effective neoadjuvant therapy for the microsatellite stable locally advanced rectal cancer.