Patients with multiple myeloma (MM) that develop bortezomib and lenalidomide-resistant disease have a median survival of 9 months; this clearly illustrates that new anti-MM approaches are needed. Niels van de Donk, MD, PhD, VU University Medical Center, Amsterdam, The Netherlands, discusses the results of the phase I/II DARA/ATRA study (NCT02751255). This clinical trial assessed the efficacy and safety of daratumumab combined with all-trans retinoic acid (ATRA) in relapsed/refractory MM. This interview took place at the American Society of Hematology (ASH) 2019 Annual Meeting and Exposition in Orlando, FL.