View clinical trials related to Radiotherapy.
Filter by:The purpose of this study was to explore the potential application of spectral CT for radiotherapy in cervical cancer.
Radiotherapy plays an important role in multidisciplinary treatment of esophageal cancer. Data from many laboratories indicate that local radiation produces systemic, immune-mediated anti¬tumour and, potentially, antimetastatic effects. Additionally, the combination of local radiotherapy and immune-modulation can augment local tumour control and cause distant (abscopal) antitumour effects through increased tumour-antigen release and antigen-presenting cell (APC) cross-presentation, improved dendritic-cell (DC) function, and enhanced T cell priming. The generation of an effective antitumor immune response requires the presentation of tumor antigens to naïve CD8+ cells in tumor-draining lymph nodes (TDLN) . Tumor-draining lymph nodes, however, are often subject to the immunosuppressive activity of tumor-derived factors, such as cytokines and other bioactive molecules from tumor cells and their associated leukocytes in the primary tumor site that contribute to the overriding of effective rejection mechanisms. Thus, in TDLN a T cell tolerance rather than a T cell activation often occurs, thereby preventing immune attack and facilitating local tumor progression.
This is a single-center, single-arm, open-label study that includes patients meeting the inclusion criteria (liver-GTV volume < 700ml or estimated liver-GTV V5 < 300ml) with hepatocellular carcinoma with diffuse tumor thrombosis involving both left and right lobes. All lesions receive moderate-dose hypofractionated intensity-modulated radiotherapy, with a gross tumor dose of 25Gy/5f, and a maximum dose of 35Gy/5f at the tumor center. One week before or during the radiotherapy, patients receive concurrent Pembrolizumab at a dose of 200mg. Subsequently, Pembrolizumab is administered intravenously every 3 weeks. Follow-up examinations are conducted 1-3 months post-radiotherapy. Lenvatinib 4mg may be used for maintenance therapy with Pembrolizumab if there are no contraindications. Maintenance therapy is continued until disease progression or intolerance. The primary endpoint is median overall survival (mOS), and secondary endpoints include objective response rate (ORR), progression-free survival (PFS), and toxicity.
This prospective national multicenter observational and interventional study aims to assess the longitudinal disease trajectory of patients with oligometastatic disease (OMD) who receive local metastasis-directed therapy. Patients with any category of OMD from any non-hematological cancer are eligible for inclusion. Local ablative therapy (LAT) includes surgical metastasectomy, radiotherapy, thermal ablation, and electroporations. The primary objective is to assess the time to failure of LAT strategy in patients with OMD from any primary cancer treated with all LAT modalities.
Colorectal cancer (CRC) is a significant cause of morbidity and mortality worldwide. Its early clinical manifestations are often subtle, leading to late-stage diagnosis in about 30% of cases with distant metastases. Liver metastases are widespread and associated with poor prognosis, especially in terms of response to immunotherapy. Despite advancements in first- and second-line treatments, third-line therapies for advanced CRC remain limited, emphasizing the need for novel strategies. This prospective study evaluates the efficacy of combined therapy involving Sintilimab, Fruquintinib/Regorafenib, and radiotherapy in advanced CRC. The study cohort comprises patients with non-liver metastatic advanced CRC and those with liver metastases, each receiving tailored treatment protocols. The primary objectives are to assess progression-free survival (PFS), overall survival (OS), and treatment response rates. Subgroup analyses will focus on liver metastases to delineate their impact on treatment outcomes. The rationale for this study stems from the intricate interplay between immunotherapy, targeted therapy, and radiotherapy in CRC management. Previous data suggest a negative correlation between liver metastases and immunotherapy efficacy, necessitating a comprehensive approach integrating multiple treatment modalities. Radiotherapy, particularly stereotactic body radiation therapy (SBRT), has shown promise in controlling liver tumors and modulating the tumor microenvironment, potentially enhancing immunotherapy responses. This study aims to provide valuable insights into optimizing third-line and subsequent therapies for advanced CRC by elucidating the efficacy and safety of this combined treatment approach. The findings may pave the way for personalized treatment strategies tailored to individual patient characteristics, ultimately improving clinical outcomes in this challenging disease setting.
This is a prospective, single-center, phase II, randomized, window-of-opportunity trial initiated by researchers. The research hypothesis is that metformin can improve the level of hypoxia in locally advanced cervical cancer and further improve progression-free survival. The study aims to compare the improvement of tumor hypoxia with synchronous chemoradiotherapy with or without metformin, using CA-IX PET/CT and radiation positioning spectral CT to evaluate tumor hypoxia, screening hypoxic patients for inclusion in the study, and comparing the effects of synchronous chemoradiotherapy with or without metformin on the degree of hypoxia and progression-free survival in the two groups of patients.
At present, concurrent chemoradiotherapy (cCRT) with platin-based dual-drug regimen is the standard treatment for inoperable, locally advanced esophageal cancer in patients with a good performance status. However, cCRT has substantial toxic effects, and a large number of patients with older age, malnutrition and other morbidities, cannot tolerate cCRT. Several phase II trials showed combining PD-1 inhibitor with definitive cCRT provided encouraging activity and acceptable toxicity in patients with locally advanced esophageal squamous cell carcinoma (LA-ESCC). Therefore, this single-arm, multicenter, phase II trial aims to assess the efficacy and safety of immunotherapy plus radiotherapy with immunonutrition support in patients with LA-ESCC and positive PD-L1 expression who are intolerant to cCRT.
This study proposes a horse-assisted therapy (HAT) approach to accompany children and young adults undergoing irradiation in the ICANS Radiotherapy Department. The aim of this new approach is to improve quality of life and reduce anxiety in children and adolescents treated with radiotherapy. The impact of equine-assisted therapy on quality of life and anxiety disorders will be described prospectively between the start and end of irradiation in children and parents who agree to inclusion.
The goal of this observational study is to compare the prognostic differences between SBRT and Surgery for NSCLC patients with interlobular fissure invasion. The main questions it aims to answer are: 1. Explore the survival differences. 2. Explore of the lung function changes before and after different treatments.
Patients with metastatic non small cell lung cancer with high risk location or size are treated with prophylactic radiation therapy in conjunction with standard of care systemic therapy.