View clinical trials related to Dose Escalation.
Filter by:Hypoxia occurs in about 80% of head and neck tumors. Based on experimental and clinical data, hypoxia is a useful parameter for pretherapeutic stratification. These radioresistant regions can be detected with FMISO PET/CT. Moreover, hypoxic subvolumes of tumors can be evolving as target volumes for radiotherapy ("dose painting") in hypoxia imaging-based dose escalation.
Esophageal cancer (EC) ranks the seventh most diagnosed malignant tumor (572,000 new cases) and the sixth cancer-related mortality (509,000 deaths) worldwide in 2018. The incidence of EC is strikingly varying among the regions and sexes. Approximately 70% of EC cases occur in men, and there is a 2-fold to 3-fold difference in incidence and mortality rates between regions worldwide. According to the latest reported in 2017, esophageal cancer ranks the sixth most common cancer and the fourth leading cause of cancer-mortality in China. Currently, esophagectomy is considered as the standard treatment for resectable EC patients. However, the prognosis of stage IIA-III esophageal cancer after esophagectomy remains poor, and local regional lymph node recurrence is the major patterns of recurrence, and mediastinal lymph node recurrence is one of the most common sites. Previous retrospective study has found that salvage chemoradiotherapy is a effective treatment option for these patients. However, the optimal dose remains unknown. In addition, no prospective trials have been conducted to investigate the efficacy and toxicities of salvage chemo-radiotherapy by using simultaneous integrated boost for the treatment of mediastinal lymph node recurrence after radical surgery of esophageal Cancer
Patients with a biochemical recurrence after radical prostatectomy for moderate- or high- risk prostate cancer are randomly assigned to hypofractionated, accelerated high dose radiation therapy group (65 Gy, 26 fractions) and a control group of standard treatment group (66 Gy, 33 fractions). The criteria for stratification at randomization include 1) risk groups, 2) androgen deprivation therapy, and 3) PSA before salvage radiation therapy, which affect biochemical recurrence. It is expected that hypofractionated, accelerated high dose radiation therapy will have a superiority in terms of biochemical control to conventional radiation therapy, and the present study would like to confirm this. In addition, we aimed to evaluate and compare the toxicity and quality of life index of two radiation therapy regimens.
The purpose of this study is to determine the maximum dose of LDE225 and BKM120 that can be safely given together to patients and/or the dose that will be used in future studies. This study will also learn more about how the combination of these two investigational drugs may work for patients with certain cancers (specifically metastatic breast cancer, advanced pancreatic adenocarcinoma, metastatic colorectal cancer and recurrent glioblastoma multiforme).