Active clinical trials for "Colorectal Neoplasms"

Enhanced recovery after surgery (ERAS) has been reported to be associated with improved outcomes in many studies, most of which involve short-term effects. Only a few studies have reported the long-term effects of highly compliant ERAS. However, to the best of our knowledge, there are no large-scale comparisons between incomplete ERAS (compliance < 70%) and non-ERAS. The aim of this comparative study is to analyze and evaluate the long-term outcomes of incomplete ERAS in laparoscopic colorectal cancer surgery.

The investigators hypothesize that gut microbiome composition and the four bacterial gene markers (M3) show dynamic changes after endoscopic resection of advanced neoplasia, some key bacteria are associated with restoration of gut microbiome after endoscopic resection.

Surgery is the main treatment method for colon cancer. About 50% of patients can be cured with surgery alone. For colon cancer with high-risk stage II or III after surgery, the current guidelines recommend 3-6 months after surgery. adjuvant chemotherapy to reduce the risk of recurrence and metastasis. However, for this part of the population, the overall benefit of adjuvant chemotherapy is limited, and different high-risk factors have different weights; some patients will still experience recurrence and metastasis even after receiving adjuvant chemotherapy. A number of previous studies have shown that patients with a positive ctDNA test on postoperative liquid biopsy without postoperative adjuvant therapy have a recurrence risk of 70-80%. Even if they receive adjuvant chemotherapy, the recurrence risk is significantly higher than that of ctDNA-negative patients. ctDNA has received increasing attention as a predictor of postoperative recurrence risk. This study intends to randomly assign 1:1 to mFOLFOXIRI regimen adjuvant chemotherapy for 6 months and mFOLFOX6 regimen for colon cancer patients with postoperative high-risk stage II-III and liquid biopsy results within 1 month after surgery. Adjuvant chemotherapy was performed for 6 months, ctDNA was dynamically monitored after 3 months of treatment and at the end of adjuvant therapy. During the follow-up period, CEA was reviewed every 3 months, and chest, abdomen, and pelvis CT and ctDNA were reviewed every 6 months; the primary endpoint of the study was 2 years RFS, secondary endpoints included 3-year DFS, OS, safety and tolerability. Through intensive postoperative adjuvant therapy, we hope to screen colon cancer patients with high recurrence risk to receive adjuvant chemotherapy and improve the survival prognosis of ctDNA-positive colon cancer patients.

The goal of this clinical trial is to learn about clinical usefulness endoscopic gastrointestinal anastomoses to restore the gastrointestinal continuity in patients with permanent colostomy after Hartmann procedure. The main questions it aims to answer are: is the endoscopic restore the gastrointestinal continuity procedure effective? is this endoscopic procedure safe?

The goal of this study is to test A2B694, an autologous logic-gated Tmod™ CAR T-cell product in subjects with solid tumors including colorectal cancer (CRC), pancreatic cancer (PANC), non-small cell lung cancer (NSCLC), ovarian cancer (OVCA), mesothelioma (MESO), and other solid tumors that express MSLN and have lost HLA-A*02 expression. The main questions this study aims to answer are: Phase 1: What is the recommended dose of A2B694 that is safe for patients Phase 2: Does the recommended dose of A2B694 kill the solid tumor cells and protect the patient's healthy cells Participants will be required to perform study procedures and assessments, and will also receive the following study treatments: Enrollment and Apheresis in BASECAMP-1 (NCT04981119) Preconditioning Lymphodepletion (PCLD) Regimen A2B694 Tmod CAR T cells at the assigned dose

This multi-site, Phase 1/2 clinical trial is an open-label study to identify the safety, pharmacokinetics, and efficacy of a repeated dose regimen of NEO212 for the treatment of patients with radiographically-confirmed progression of Astrocytoma IDH-mutant, Glioblastoma IDH-wildtype, and the safety, pharmacokinetics and efficacy of a repeated dose regimen of NEO212 when given with select SOC for the treatment of solid tumor patients with radiographically confirmed uncontrolled brain metastasis. The study will have three phases, Phase 1, Phase 2a and Phase 2b.

At present, radical resection ± preoperative neoadjuvant chemotherapy for colorectal cancer is still the standard comprehensive treatment. In recent years, immunotherapy of PD-1 monoclonal antibody has a significant effect in the second-line/first-line treatment of dMMR/MSI-H advanced colorectal cancer and the neoadjuvant treatment of early colorectal cancer. Synchronous multiple primary colorectal cancer (sMPCC) is a relatively rare type of colorectal cancer (CRC) that refers to the simultaneous occurrence of 2 or more independent primary malignancies in the colon or rectum. The recent large-scale, single-center retrospective study of the investigator showed that compared with single primary colorectal cancer (SPCRC)patients, the incidence of dMMR/MSI-H was significantly higher in sMPCC patients. Besides, a certain proportion of sMPCC patients could both have MSI and MSS tumors at the same time. There is no standard regimen for this patients so far. This study intends to treat the MSI-H/MSS (dMMR/pMMR) mixed sMPCC patients with combination of mFOLFOX6+PD-1 monoclonal antibody neoadjuvant therapy, and treat the all-MSI-H (dMMR) sMPCC patients with single-drug PD-1 monoclonal antibody neoadjuvant therapy. Given the current gaps in the guideline, the investigator intends to take the lead in carrying out this open, multi-center, prospective clinical phase II study. This study might provide a clinical evidence for individual treatment of sMPCC patients, in preserving the functions and organs to the greatest extent.

Delayed bleeding is the most frequent (5 to 15%) and challenging complication after large colorectal polypectomy. Different preventive treatments, such as the prophylactic use of clips, have been tried to prevent the occurrence of delayed bleeding, but to date, no treatment has clearly shown its effectiveness. In addition, preventive hemostasis with clips is difficult and costly. A newly developed endoscopic hemostatic powder generating gelation effect (Nexpowder) may be an effective alternative to prevent post polypectomy bleeding in patients treated by endoscopic mucosal resection (EMR) for large superficial colorectal lesions.

This is a multicenter, randomized, open-label, 3-arm Phase 3 study

Colorectal cancer is the third most common malignant tumor. Radical resection is the mainstay of treatments for non-metastatic colorectal cancer. In case of traditional laparoscopic surgery, inexperienced assistants are likely to cause side injuries and interfere surgeon due to limited operating space. Reduced-port laparoscopic surgery has only 3 ports for surgeon and observer, and the surgeon completes the surgery independently, which increases the difficulty of the operation. However, reduced-port laparoscopy has some potential advantages and applications. Reduced-port laparoscopic surgery avoids the prolongation of the operation time and parainjury caused by inexperienced assistant. Reduced-port laparoscopy reduces some surgical incisions, resulting in less pain and faster recovery. Reduced-port laparoscopy also reduces the consumables, human resources and medical expenses. This study aims to evaluate the curative effect and safety of reduced-port laparoscopic surgery versus conventional laparoscopic surgery for resectable colorectal cancer.