Prospective Observational Study of the Role of Extracellular Vesicles (EVs) as Biomarkers of Pulmonary Involvement in Patients With Sporadic Lymphangioleiomyomatosis (S-LAM) and Tuberous Sclerosis Complex-Associated LAM (TSC-LAM)
Lymphangioleiomyomatosis (LAM) is a rare lung disease, linked to Tuberous Sclerosis Complex (TSC) or occurring sporadically, and involves abnormal mTORC1 activation. LAM cells are neoplastic, and recent focus has turned to extracellular vesicles (EVs), which mediate tumor progression and may serve as biomarkers. This study, conducted at the Pulmonology Unit of ASST Santi Paolo e Carlo and the Pharmacology Laboratory of the University of Milan, will analyze the characteristics of serum EVs in patients with LAM and TSC. During scheduled outpatient visits, clinical and functional data and blood samples will be collected. Plasma will be separated, and EVs will be isolated via centrifugation. EVs will be analyzed for size, concentration, and molecular content (proteins, lipids, nucleic acids). The results obtained will be collected and correlated with the clinical and functional data.
• Female participants aged ≥18 years Confirmed diagnosis of tuberous sclerosis complex (TSC) and/or lymphangioleiomyomatosis (definite diagnosis of TSC-LAM or S-LAM) Follow-up at the Pulmonology Unit of ASST Santi Paolo e Carlo, Milan Ability to provide written informed consent