This project is designed to discover circulating biomarkers for aortic aneurysms in adults affected by Marfan Syndrome (MFS). The first aim is to identify circulating transcripts, protein-coding (mRNA) and not (ncRNAs), which show differential expression between three groups of adult patients affected by MFS, based on: presence or absence of thoracic aortic aneurysms (TAA) and indication of TAA-surgery. This obtained TAA\_MFS\_signature will then be correlated to fundamental biological parameters, like cytokines and chemokines relevant during inflammation and transcriptomic as well as epigenetics changes in aortic aneurysm tissue. Furthermore, the association of TAA\_MFS\_signature to genetic, clinical and instrumental parameters at present used for diagnosis and treatment, will be evaluated.