Active clinical trials for "Neoplasms"

RATIONALE: Treatment for pediatric extracranial germ cell tumors may cause side effects and secondary cancers later in life. A study that evaluates patients after receiving combination chemotherapy or surgery may help doctors understand the side effects and secondary cancers that occur later in life. PURPOSE: This study is looking at treatment outcome and quality of life in patients with pediatric extracranial germ cell tumors previously treated on clinical trial CCLG-GC-1979-01 or CCLG-GC-1989-01.

RATIONALE: A study that evaluates patients' lifestyle, skin, and blood and tissue samples may help doctors understand the risk factors for melanoma relapse. PURPOSE: This clinical trial is studying the risk factors for melanoma in families with melanoma.

RATIONALE: Gathering information about genetic changes in patients with lobular carcinoma in situ of the breast may help doctors learn more about the disease and find better methods of treatment. PURPOSE: This clinical trial is studying the genetics of women with lobular carcinoma in situ of the breast.

The purpose of this study is to see if a specialized imaging technique using MRI called multi-exponential T2 component analysis can reliably differentiate between normal brain and brain tumour.

RATIONALE: Gathering information about quality of life, fatigue, and other symptoms from patients with myelodysplastic syndromes may help doctors learn more about the disease and may help plan treatment. PURPOSE: This clinical trial is studying quality of life and symptoms in patients with newly diagnosed myelodysplastic syndromes.

This study aim to find out the risk of exacerbation of chronic hepatitis B after percutaneous radiofrequency ablation (RFA) or hepatectomy for HCC, and it's effect to treatment outcome.

Cancer is the leading cause of mortality in our country, and ovarian cancer becomes a more and more important disease gradually in the field of gynecologic malignancies. According to the statistics of the Department of Health, the incidence of ovarian cancer increased in recent years and the mortality rate was the highest among all gynecologic malignancies in Taiwan. Early diagnosis for ovarian cancer is difficult due to the lack of obvious and specific initial symptoms. Therefore, it is usually at advanced stage when the diagnosis is confirmed. The prognostic parameters for ovarian cancer include tumor stage, histological subtype and grade, residual tumor after surgical intervention and the response to chemotherapy. However, the possible mechanism of ovarian cancer is still not clear now, which has considerable influence on the management and prognosis of the patients. Malignancy is considered as a multi-factorial disease, and the influence of immunologic mechanism on progression and prognosis of cancer is more and more important. The natural CD25+CD4+ regulatory T cells actively suppress pathologic and physiological immune response, contributing to the maintenance of immunological self-tolerance and immune homeostasis. The development and function of regulatory T cells depend on the expression of the transcription factor forkhead box P3 (FOXP3). The mechanisms of suppression are still not known well. Whatever the mechanisms of suppression are, it is necessary to control the magnitude of regulatory T cells-mediated suppression for the benefit of the host because too much suppression might lead to immunosuppression and render the host susceptible to infection and cancer. We will collect the tumor tissue, ascites and peripheral blood during operation. Through this research we will set up the immunological profiles in the changes of lymphocytes, humoral immunity and cell-mediated immunity in ovarian cancer patients. The kinetic changes and associations between regulatory T cells and the severity and progression of disease will also be evaluated. Therefore, the role of regulatory T cells would be defined in the patients with ovarian cancer. We will also correlate the regulatory T cells with the clinical prognosis of ovarian cancer patients. Finally, we will try to find an efficient therapeutic strategy for the cancer patients.

Investigate the role of MMPs in the CXCL12-induced invasion of laryngeal and hypopharyngeal squamous cell carcinoma

18F-FDG PET, a whole-body imaging technology based on glucose metabolism, can effectively detect subclinical and clinical therapeutic responses at stages that are earlier than those detected by conventional approaches. We propose to conduct a prospective study to evaluate therapeutic response using 18F-FDG PET before and after induction chemotherapy for locally advanced NPC patients.

The purpose of the study is achieve standardization treatment of low and intermediate risk rhabdomyosarcoma patients, with an attempt to improve treatment results in high and very high risk patients by the addition of doxorubicin as induction treatment and at the maintenance phase.