Background: Alveolar soft part sarcoma (ASPS) is a rare tumor. ASPS is resistant to chemotherapy and radiation. ASPS is characterized by slow growth. Currently no in vitro or in vivo models of ASPS exist for use in experimental therapeutic studies or biological investigations. Primary Objectives: Acquisition of blood and tissue from patients with ASPS. Acquisition of blood from healthy controls for comparison with blood from patients with ASPS. These control samples will be obtained from study NCI at Frederick Protocol OH99-C-N046. Eligibility: Subjects of any age with a diagnosis of primary or metastatic alveolar soft part sarcoma who are undergoing medically indicated surgery for their disease. Design: Patients with Alveolar Soft Part Sarcoma (ASPS) will be eligible for this study. Biopsy tissue will be obtained as an additional sample at the time of a medically indicated procedure. Blood sample may be collected at initial visit and follow-up visits. Specific risks will be described in a separate consent to be obtained at the time of the biopsy. Tumor samples and blood samples will be processed and/or stored for use in research efforts in the laboratory of Dr. David Vistica, National Cancer Institute, Frederick, MD. Additionally, blood samples will be obtained from healthy volunteers for comparison to patients with ASPS. These control samples will be obtained from the National Cancer Institute at Frederick Protocol OH99-C-N046.
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