Phil McCarthy, MD, of the Roswell Park Comprehensive Cancer Center, Buffalo, NY, talks on the advantages an limitations of giving patients with myeloma treatment-free intervals. Dr McCarthy reports that treatment-free intervals should not be given until it can be accurately identified which patients can stop therapy without negative impacts. It has been shown that patients who receive a fixed duration of maintenance therapy have earlier progressions after stem cell transplantation, and that in transplant ineligible populations the continuation of therapy is associated with superior progression-free survival. Highlighting data from clinical trials, Dr McCarthy explains that this progression-free survival can translate into overall survival, suggesting that the preferred method of drug administration should be that of fixed duration with no treatment-free intervals. This interview took place during the 18th International Myeloma Workshop (IMW 2021) congress.