View clinical trials related to Neoplasms Malignant.
Filter by:It has been well established that malignant tumors tend to have low levels of oxygen and that tumors with very low levels of oxygen are more resistant to radiotherapy and other treatments, such as chemotherapy and immunotherapy. Previous attempts to improve response to therapy by increasing the oxygen level of tissues have had disappointing results and collectively have not led to changing clinical practice. Without a method to measure oxygen levels in tumors or the ability to monitor over time whether tumors are responding to methods to increase oxygen during therapy, clinician's reluctance to use oxygen therapy in usual practice is not surprising. The hypothesis underlying this research is that repeated measurements of tissue oxygen levels can be used to optimize cancer therapy, including combined therapy, and to minimize normal tissue side effects or complications. Because studies have found that tumors vary both in their initial levels of oxygen and exhibit changing patterns during growth and treatment, we propose to monitor oxygen levels in tumors and their responsiveness to hyperoxygenation procedures. Such knowledge about oxygen levels in tumor tissues and their responsiveness to hyper-oxygenation could potentially be used to select subjects for particular types of treatment, or otherwise to adjust routine care for patients known to have hypoxic but unresponsive tumors in order to improve their outcomes. The overall objectives of this study are to establish the clinical feasibility and efficacy of using in vivo electron paramagnetic resonance (EPR) oximetry—a technique related to magnetic resonance imaging (MRI)—to obtain direct and repeated measurements of clinically useful information about tumor tissue oxygenation in specific groups of subjects with the same types of tumors, and to establish the clinical feasibility and efficacy of using inhalation of enriched oxygen to gain additional clinically useful information about responsiveness of tumors to hyper-oxygenation. Two devices are used: a paramagnetic charcoal suspension (Carlo Erba India ink) and in vivo EPR oximetry to assess oxygen levels. The ink is injected and becomes permanent in the tissue at the site of injection unless removed; thereafter, the in vivo oximetry measurements are noninvasive and can be repeated indefinitely.
Tumors with low oxygen levels are associated with poor prognosis and resistance to standard radiotherapy or systemic therapies. The ability to make repeated oxygen measurements in tumors could be used to help select the most effective treatment or the best timing to start therapies. The purpose of this study is to ascertain the safety and feasibility of using an implantable oxygen sensor, known as the OxyChip, to make oxygen measurements in tumors using EPR oximetry, a technique related to magnetic resonance imaging (MRI).
This is an open-label, two-part study to evaluate the safety and tolerability of combination treatment with dalotuzumab + MK-2206, dalotuzumab + MK-0752, or dalotuzumab + ridaforolimus (MK-8669). Part 1 of the study will determine the dose-limiting toxicities (DLTs) observed after administration of each of the combinations at various doses and define the maximum tolerated dose (MTD) of each combination. Part 2 of the study will assess preliminary anti-tumor activity of these combinations (at MTD) in two groups of participants with selected tumor biomarkers: one group with metastatic or recurrent platinum-resistant ovarian cancer, fallopian tube cancer, or primary peritoneal cancer and one group with metastatic or recurrent colorectal cancer. The dalotuzumab + ridaforolimus and dalotuzumab + MK-2206 arms will be enriched with female platinum-resistant ovarian cancer, fallopian tube cancer, or primary peritoneal cancer participants. The dalotuzumab + MK-0752 arm will be enriched with metastatic or recurrent wild-type kirsten rat sarcoma (KRAS) colorectal cancer participants. The primary hypothesis is that the DLTs observed in adult patients with locally advanced or metastatic solid tumors after administration of each of the MK-MK doublets will be dose-dependent to allow for definition of a MTD within each MK-MK doublet.
This is a Phase 1 trial evaluating the safety and efficacy of crizotinib in patients with tumors except non-small cell lung cancer that are positive for ALK.
Primary Objectives: - Study part 1: To determine the Maximum Tolerated Dose (MTD) and the Dose Limiting Toxicities (DLTs) of cabazitaxel administered as a 1-hour infusion in combination with gemcitabine, every 3 weeks in patients with advanced solid malignancies. - Study part 2: To determine the antitumor activity of cabazitaxel in combination with gemcitabine, in an additional extended cohort of 15 patients with advanced solid malignancies treated with the defined MTD, as assessed by objective response rate (ORR) according to the revised guideline for Response Evaluation Criteria in Solid Tumours (RECIST 1.1 criteria). Secondary Objectives: - To assess the safety profile of the combination regimen of cabazitaxel with gemcitabine. - To assess the pharmacokinetics (PK) of cabazitaxel, gemcitabine and its metabolite 2',2' difluorodeoxyuridine (dFdU) when given in combination. - To determine Time to Progression (TTP), Objective Response Rate (ORR), and Duration of Response (DR), in the extended cohort of patients treated at the MTD in Part 2 of the study and the patients who received the MTD in Part 1 component. For study part 1, dose levels were to be escalated according to predefined dose escalation decision rules. The Maximum Administered Dose (MAD) was reached at the dose level when at least 2 patients developed a DLT during the first 3 weeks of treatment. There was no further dose escalation when this dose was achieved. The MTD was defined as the highest dose at which 0 or 1 of 3 to 6 patients, respectively, experienced DLT during the first 3 weeks of treatment.