Active clinical trials for "Osteosarcoma"

To assess survival outcome of pediatric patients with localized osteosarcoma of the extremities in Upper Egypt, identify factors of prognostic significance for survival, and to determine factors predictive of surgical methods employed in these patients, and developing a clinical model for risk prediction.

A retrospective observational study of the effectiveness of gemcitabine - docetaxel in patients with relapsed osteosarcoma who have been treated with HD IFO in first line treatment

The goal of this type of observational study is to investigate the preliminary effect of 3D printed personalized extendable prosthesis replacement on limb salvage in children with osteosarcoma. The main question it aims to answer is: Is 3D printed personalized extendable prosthesis replacement has a good outcome in limb salvage pediatric osteosarcoma？

The study is a first step of a process to establish the standard chemotherapy treatment with the aim to improve outcome for patients with these rare tumours. For this reason the study will be non-controlled clinical trial. In this regard, the study aims to determine the feasibility of intensive chemotherapy in this age group, and/or separate efficacy analyses according to the different histologic categories and whether the number of patients recruited by the co-operating groups permits future randomised studies.

RATIONALE: Studying samples of tumor tissue and blood from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. PURPOSE: This research study is looking at DNA in tumor tissue samples from patients with localized or metastatic osteosarcoma.

The purpose of this study is to develop indices predicting response to pre-operative chemotherapy in osteosarcoma patients. Histologic response to pre-operative chemotherapy is very important for the ultimate outcome of osteosarcoma patients. Conventional methods such as CT or MRI evaluating tumor response to chemotherapy is not so efficient in tumors like osteosarcoma. Instead, the investigators will test whether blood TGF-b1 levels, PET/CT findings, MRS findings as well as the level of NF-kB expression in tumor tissues can predict chemotherapy response in osteosarcoma.

At present, the only recognised prognostic factor for primary high-grade osteosarcoma is the histological response to preoperative chemotherapy. Our study was designed to identify new diagnostic markers that could eventually have a prognostic value and therapeutic consequences. 80 patients under 20 years of age with primary osteosarcomas were studied while under treatment by the French Society of Paediatric Oncology OS 94 protocol. Paired normal and biopsy samples were collected. In addition, surgical resection specimens, following preoperative chemotherapy, were obtained in many cases. After genomic DNA extraction, an allelotyping analysis targeting microsatellites was planned. The studied DNA regions contained mainly Rb, p53, APC, p16, c-met, TWIST, c-kit, erbB2 and topoisomerases genes. The techniques used in this molecular analysis comprised mainly allelotyping study, quantitative real-time PCR, gene sequencing , immunohistochemistry. The first results showed the prognostic value of 7q31 region containing c-met and 5q21 containing APC (Br J Cancer, 2003, Entz-Werlé et al.), 7p21 containing TWIST (Int J Cancer, 2005, Entz-Werlé et al.) and 4q21 targeting c-kit gene (J Clin Oncol, 2005, Entz-Werlé et al.).

The purpose of this study is to determine the ability of a specific imaging method, termed Diffuse Optical Spectroscopic Imaging, to provide metabolic and functional information which can be used to predict overall response to preoperative (neoadjuvant) chemotherapy in patients with sarcomas. Sarcoma patients face comparatively poor response rates to chemotherapy and early, non-invasive indications of response could provide physicians with the information necessary to make evidence-based changes in treatment strategies. Patients who do not demonstrate early signs of response would be spared the unnecessary side-effects of an ineffective chemotherapy regimen, and could either be switched to a different regimen or undergo surgery

The purpose of this study was to collect information regarding the safety and tolerability of mifamurtide (liposomal muramyl tripeptide phosphatidyl ethanolamine; L-MTP-PE).

The purpose of this study is to identify phenotypic (cell surface receptor expression) and functional differences in monocyte populations in humans with osteosarcoma as compared to published historical data on normal human monocyte values. The biologic similarity between canine and human osteosarcoma makes it a disease model that holds promise for translational research possibilities. The phenotypic and functional differences the investigators expect to find in canine and human monocytes between normal and osteosarcoma subjects in this pilot work will allow us to launch a program of investigations to further their understanding as to what characteristics are associated with improved survival in canine and human osteosarcoma. Such data will represent the foundation upon which the investigators can plan future investigations designed to exploit the potential anti-tumor capabilities of monocytes and macrophages in canine and human osteosarcoma.