<prompt> Which antibody is commonly elevated in walder strom macroglobinemia ?-IgGIgAIgMIgD  <response>: Waldenstroms macroglobulinemia WM, also known as lymphoplasmacytic lymphoma, is a type of cancer affecting B cells, a type of white blood cell. The main attributing antibody is immunoglobulin M IgM. WM is an indolent lymphoma i.e., one that tends to grow and spread slowly. It is a type of lymphoproliferative disease, which shares clinical characteristics with the indolent non-Hodgkin lymphomas. 