A recent European study reported poorer overall survival in patients with rare IgD, IgE, and IgM multiple myelomas following stem cell transplantation compared to patients with the more common IgG, IgA, or light chain myelomas. However, the overall survival of nonsecretory myeloma patients, another rare type of myeloma, was similar to that of common myeloma patients.

The authors added that the survival data from their analysis is better than previous data for patients with rare myelomas who received a stem cell transplant. They therefore recommended the continued use of transplantation as a …