Pilot, prospective, monocentric study aimed at evaluating the rate of patients with circulating "cancer cell/macrophage" hybrid cells in the peripheral blood and the evolution of this rate over time. The study will be conducted on a population of patients with leiomyosarcoma and treated in the context of routine care. 20 patients will be included: * 10 patients with localized disease. * 10 patients with metastatic disease. For each included patient, blood samples will be collected during baseline visit and up to 24 months after inclusion.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
20
For patients with localized leiomyosarcoma, samples will be collected: * At Baseline. * Before surgery (for patients who have had neoadjuvant treatment (external radiotherapy and/or chemotherapy)). * After surgery. * At each control visit. * At local or metastatic recurrence (or at 24 months post inclusion if no progression). For patients with metastatic leiomyosarcoma, samples will be collected: * At Baseline. * At each therapeutic line. * At progression (or at 24 months post inclusion if no progression).
Institut Universitaire du Cancer Toulouse - Oncopole
Toulouse, France
The longitudinal evolution of rate of patients with "cancer cell / macrophage" hybrid cells in peripheral blood.
Time frame: 24 months after the end of inclusions.
Quantification of circulating hybrid cells in peripheral blood by automatic measurement (Cell Counter Corning) and expressed in number of cells / millilitre of blood.
Time frame: 24 months after the end of inclusions.
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