Pelhrimov

The study focuses on patients with various conditions related to plasma cells, including Monoclonal Gammopathy of Undetermined Significance MGUS, smoldering Multiple Myeloma SMM, Multiple Myeloma MM, and Plasma Cell Leukemia PCL. It is an observational, non-interventional, multicenter research project aimed at collecting, storing, and analyzing biological samples from these patients. The purpose is to create an international infrastructure for gathering consistent clinical data and biological samples at different stages of disease and treatment. Participants provide biological samples such as bone marrow aspirate, bone marrow biopsy, extramedullary disease EMD biopsy, peripheral blood, and serum at multiple timepoints. These include baseline, pre-maintenance or after one year of therapy depending on transplant eligibility, during maintenance therapy if part of standard care, and at first or later progression of disease. The study collects and stores these samples over a long period to support future research. Participants will undergo sample collections at scheduled times during their disease course and treatment phases. Researchers will monitor and analyze the stored biological samples and clinical data to support a biobank lasting up to 30 years. The study does not involve any experimental treatments but focuses on gathering data and samples to better understand the conditions. Participation requires written informed consent and compliance with the protocols follow-up schedule.