Active clinical trials for "Osteosarcoma"

The purpose of this study is to determine the efficacy of a temporary ovarian suppression obtained by administration of a gonadotropin releasing hormone agonist during alkylating agents containing chemotherapy on ovarian reserve assessed by Anti-Müllerian hormone (AMH) serum levels in adolescents and young women with cancer.

The PI3K, protein kinase B (AKT), and mTOR signaling network promotes cell growth, survival, metabolism, and motility, but becomes a critical oncogenic driver under aberrant conditions that control the tumor microenvironment and angiogenesis. The PI3K-AKT-mTOR axis is the most frequently deregulated signaling pathway in primary osteosarcoma and other bone tumors. PI3Ka has high rates of 25-50% activating mutations associated with tumor formation in osteosarcoma. Other causes of pathway hyperactivation include loss of function of the tumor suppressor PTEN, gain-of-function mutations in AKT and PDK1, or upregulation of receptor tyrosine kinases. TQB3525 is an orally bioavailable, potent, dual catalytic site inhibitor of PI3Ka and PI3Kd. Tumor growth inhibition has been demonstrated in multiple xenograft osteosarcoma models with PI3K-mutant, PTEN-null cell lines. The investigators try to investigate TQB3525 in primary osteosarcoma and other bone tumors for its safety, tolerability, dose-limiting toxicities (DLT), MTD and antitumor efficacy.

This trial will be a pilot study to find out if zoledronic acid improves the response to chemotherapy in high grade osteosarcoma. In arm A of the study, 40 adult patients will be randomised into two groups. One group will get standard chemotherapy and the other group will get Zoledronic acid in addition to chemotherapy. The investigators will assess the histological necrosis as well as disease status for up to 2 years. In Arm B, adult patients with relapsed disease or advanced disease who are unable to take any other therapy and are given only symptomatic care will be given 6 doses of zoledronic acid and followed up for disease status. This will be to determine the role of zoledronic acid as a single agent.

This is a phase II study to determine the antitumor activity of Vinorelbine and Cyclofosfamide association among patients with refractory tumours or in relapse with rhabdomyosarcomas and other soft tissue tumours, Ewing tumours, osteosarcomas, neuroblastomas or medulloblastomas.

The purpose of this study is to determine the Everolimus aim response in children and adolescents with refractory or relapsed osteosarcoma. The aim response is defined as complete or partial response (according to RECIST criteria) for at least 4 weeks, or stable disease for at least 12 weeks.

The purpose of this study is to investigate to which extend osteosarcoma patients do NOT meet the criteria for successfully advancement to next planned chemotherapy course.

Use exosome microfluidic chips to establish a combination of exosome subgroup level (exosome barcode) markers for the early diagnosis of osteosarcoma lung recurrence, and establish the basis of microfluidic chip based exosome biomarker for monitoring the early therapeutic response of the second-line therapy for recurrent osteosarcoma.

A multicentre, observational, retrospective study to analyse the efficacy of high dose isofosfamide thorugh elastomer in patients with relapsed/ refractory osteosarcoma

RATIONALE: Studying samples of blood and tissue 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 studying DNA biomarkers in samples from patients with osteosarcoma and healthy volunteers.

According to EURAMOS-1, 17% of osteosarcoma patients were considered to have metastases at diagnosis. In this selected cohort, the reported 5-year EFS from diagnosis of 28% compares well to previous results reported from unselected cohorts of patients with only lung metastases. Resection of pulmonary metastases from osteosarcoma is a treatment option which has been shown to correlate with survival benefit and cure in select individuals. These patients are best addressed in a multidisciplinary fashion, with the involvement of a thoracic surgeon with experience in pulmonary metastasectomy. At the same time, the goal of surgical resection of pulmonary metastases from osteosarcoma is to render the patient completely disease free. "Tumor debulking" or "cytoreductive surgery" with incomplete resection has not demonstrated any survival benefit for patients with pulmonary metastases. Thus open thoracotomy is more preferred than VATS. However over the last decade in China, thoracotomy has not been adopted generally. More patients had chosen VATS or even hypo-fractionation radiotherapy, such as gamma knife, cyber knife and so on as a local treatment method. This study aims to investigate the survival of consecutive patients who had achieved a first complete surgical remission (CR) during combined-modality therapy on neoadjuvant or adjuvant PKUPH-OS protocol so as to discuss reasonable local therapy for resectable pulmonary osteosarcoma metastatic lesions.