A special session was added to the 13th IMW in response to the recently observed rise in incidence of secondary malignancies in patients who have been treated for MM, especially those that have received long term maintenance therapy with IMids. This is an emerging issue in several clinical trials, including trials from the French and Italian groups. There were not a lot of answers, but rather more questions. Pooled patient analyses from several trials were presented, as well as subset analysis of others. The bottom line is: longer term follow up is needed.