Active clinical trials for "Colorectal Neoplasms"

The incidence of colorectal cancer ranks fourth worldwide after lung, prostate and breast cancers. Although chemotherapy has an important place in the treatment of colorectal cancers, it can cause side effects such as diarrhea and fatigue in patients. Cancer patients' ability to cope with treatment side effects can be benefited from technological developments. Studies have shown that mobile health applications reduce symptom experience and increase quality of life in patients with breast cancer and leukemia.

Colorectal cancer (CRC) is one of the most common gastrointestinal tumors. According to the latest cancer report, the incidence and mortality rates of CRC are both ranked top 5 among malignant tumors worldwide and continue to rise. Patients who receive treatment in the early stage (stage I) have a 5-year survival rate of approximately 90%. However, for high-risk stage II and III colorectal cancer patients, the 5-year survival rate is only 40%-70%, and almost half of the patients experience postoperative recurrence and metastasis. Circulating tumor DNA (ctDNA) is a small fraction of total cell-free DNA (cfDNA) in peripheral blood circulation, carrying tumor-specific genetic and epigenetic information. It can usually be detected in the serum or plasma of tumor patients in peripheral blood. Studies have shown that methylation detection of plasma ctDNA can be used for predicting the efficacy and prognosis of tumor postoperatively, as well as for dynamic monitoring. Current methods for monitoring CRC recurrence include testing for carcinoembryonic antigen (CEA) in blood and periodic computed tomography (CT) scans. However, due to the low sensitivity of CEA and the radiation and cost limitations of CT examination, the disease status of postoperative CRC patients cannot be well-monitored. ctDNA is a promising biomarker for monitoring the recurrence and metastasis of CRC. Research results have shown that ctDNA can be detected in all subjects before surgery, and the changes in ctDNA levels are related to the extent of surgical resection. The detection of ctDNA after surgery generally indicates recurrence within one year. ctDNA may be a more reliable and sensitive indicator than the current standard biomarker CEA, providing a window for early intervention. This multicenter, prospective, and randomized controlled cohort study uses a single-tube methylation-specific quantitative PCR (mqMSP) detection, which detects 10 different methylation markers and can quantitatively analyze plasma samples containing tumor DNA as low as 0.05%. This study will use the ctDNA methylation detection technology to conduct quantitative detection of ctDNA methylation in the plasma of enrolled patients, hoping to predict the recurrence and metastasis risk of patients at an earlier stage through ctDNA changes, and to explore the value of ctDNA detection in guiding postoperative follow-up for high-risk stage II and III CRC.

The goal of this clinical trial is to detect the prognostic value of longitudinal monitoring circulating tumor DNA (ctDNA) for no evidence of disease (NED) status in metastatic colorectal cancer (mCRC) patients and its utility in guiding therapeutic intervention. The main questions it aims to answer are: Whether ctDNA monitoring could evaluate NED status ahead of normal radiologic monitoring. What about the concordance of evaluating NED status by ctDNA monitoring compared with normal radiologic monitoring? Whether the patients with ctDNA positive status could benefit from early therapeutic intervention. Patients who receive any kinds of therapies with the aim of NED and are confirmed by clinical and radiologic examination will go through longitudinal ctDNA monitoring. According to the results of ctDNA monitoring, the patients will be divided into ctDNA positive group and ctDNA negative group. Patients in ctDNA positive group will receive individual therapeutic plan decided by the investigator. Patients in ctDNA negative group will receive regular examinations. When radiologic recurrences are confirmed, the patients will be re-evaluated for a second opportunity of radical resection.

The study will be conducted in patients with metastatic colorectal cancer (mCRC) harboring a BRAFV600E mutation, to collect clinical data and biological samples to be used for research but also to gather real-world clinical data concerning the treatments and the survival outcomes in patients with this pathology.

The goal of this study is to determine the feasibility of CEA assessments at home using (automated) capillary sampling in patients in the follow-up after treatment for colorectal cancer. The main questions it aims to answer are: To determine the success rate of capillary sampling at home by the patient To assess reliability and satisfaction of (automated) capillary CEA measurements Participants will be asked to perform automated capillary sampling and lancet capillary sampling at home twice after regular check-up visits in the hospital, with an interval of 3-6 months in between. During this hospital visit, a CEA measurement in blood sampled by venipuncture will be performed to act as a reference for the CEA measurements in (automated) capillary blood to be sampled at home. Reliability of CEA measurements will be assessed for automated capillary and lancet capillary sampling compared to venipuncture. Satisfaction in terms of patient reported outcomes (pain, burden, ease of use, and preference) will be evaluated.

Colorectal cancer (CRC) is the third most common cancer and the second leading cause of malignancy-related mortality. Capecitabine has been approved for the treatment of colorectal cancer as first-line therapy. About 50%-68% of patients who take capecitabine develop Hand-foot syndrome. Hand-foot syndrome (HFS) is the most common adverse event of capecitabine-based chemotherapy. Initial symptoms of HFS are dysesthesia, tingling in the palms, fingers, and soles of the feet, and erythema, which may progress to an extremely painful and debilitating condition without prompt management. These symptoms can potentially lead to a worsened quality of life in patients taking capecitabine-based chemotherapy. Moreover, the adverse reaction necessitates dose-reduction or withdrawal of the chemotherapeutic agent. The mechanisms of HFS are still unknown, and there are limited data available on how to prevent them or manage them. However, different hypotheses of capecitabine-induced HFS pathogenesis have been suggested. One of the hypotheses stated that HFS is a kind of inflammation mediated by cyclooxygenase's (COX-2) over expression in palm and feet by capecitabine and its metabolites causing elevation of inflammatory markers as tumor necrosis factor alpha (TNF-α). COX-2 enzyme plays a main role in inflammation and pain. Therefore, celecoxib which is selective (COX-2) inhibitor may have a key role in the HFS treatment plan. A retrospective study and two prospective studies showed that combining capecitabine with celecoxib, a selective COX-2 inhibitor, can significantly reduce capecitabine-related HFS in colorectal cancer patients. Those studies were dependent on HFS grading only without measuring any markers. So, in our study we assess possible protective effect of celecoxib against capecitabine induced HFS and measure inflammatory marker as tumor necrosis factor alpha (TNF-α), oxidative stress marker as Malondialdehyde (MDA), and cyclooxygenase-2 (COX-2) enzyme to show whether capecitabine induced HFS is caused by COX-2 mediated inflammation or not.

The present study aims to compare effectiveness and cost-effectiveness of the miRFec test with respect to fecal immunochemical test (FIT) for the detection of advanced colorectal neoplasm among individuals participating in colorectal cancer (CRC) screening.

ABCSG C08 is a randomized, two-arm, multicenter trial to investigate the efficacy of endurance exercise following adjuvant chemotherapy in patients with colorectal cancer. Indication: Locally advanced colorectal cancer after adjuvant chemotherapy. Evidence supporting the beneficial effects of exercise programs during chemotherapy are available, the results across studies are not entirely consistent. Additional studies are needed to determine the optimal content, intensity, and form of training programs.

For patients with stage III colon cancers, radical resection of primary tumor followed by adjuvant chemotherapy is currently the standard treatment. Adjuvant chemotherapy with 5-fluorouracil and oxaliplatin based regimen has been proved effective to improve recurrence-free survival and overall survival. Approximately half of patients with stage III colon cancers can be cured by surgery alone, while a substantial number of patients still experience recurrence, even with standard adjuvant chemotherapy. In recent years, circulating tumor DNA (ctDNA) has been detected in the cell-free component of peripheral blood samples in advanced colorectal cancers and many other solid tumors. Several previous studies have suggested that in patients with stage I-III colorectal cancer, postoperative ctDNA was an valuable biomarker to predict minimal residual disease (MRD) after radical resection, thus redefining patients risk outcome groups and guiding postoperative treatment. In addition, recent studies based on serial postoperative ctDNA detection showed that serial ctDNA analyses revealed disease recurrence up to 5-16.5 months ahead of radiological imaging. Here, based on the role of ctDNA in predicting MRD, we conducted an open, prospective, randomized controlled phase II cohort study to explore if ctDNA can as a biomarker to guide personalized surveillance strategy after surgery.

MRI is a potentially powerful tool to reliably determine the intra-abdominal tumor load and relations with intra-abdominal organs. In recent years diffusion weighted MRI has proven its value as a highly sensitive technique to detect small malignant disease in a wide variety of cancers [1-3]. However, literature concerning the clinical impact of detecting peritoneal metastases with MRI is very limited. Therefore, there is a need for a large randomized multicenter trial to determine whether dedicated MRI can be used as a selection tool for CRS-HIPEC candidates in daily practice.