- Pretransplant sera available with immunoglobulin A (IgA), immunoglobulin D (IgD), immunoglobulin E (IgE), immunoglobulin G (IgG), or immunoglobulin M (IgM) monoclonal paraprotein with a level of 1.5 grams/dl or greater identifiable on serum protein electrophoresis; eligibility for patients with pretransplant paraprotein levels of less than 1.5 gm/dl will be evaluated on an individual basis to determine whether purification of idiotype is feasible