Figure 2.
Evidence-based algorithm for treatment of patients with relapsed and/or refractory myeloma using our currently approved novel agents. This diagram provides an overview of just some of the considerations and options that are involved in management of patients with relapsed and/or refractory disease. Please consult the text for further details about the use of this approach, which will need to be individualized to the molecular characteristics of each patient's disease (Fig. 1). The patient's prior exposure to and tolerance of these drug classes need consideration, as do their comorbidities. With regard to the latter, some suggestions are provided about appropriate options in the fit (pink background) and frail patient (gray background). Also, note that this list includes only recently approved, novel single agents and combination regimens, as well as some combinations that will likely be approved based on already-available phase III data. For the sake of brevity, we have not incorporated other drug classes, such as conventional alkylating agents, which may be of substantial use in this setting either at standard doses or in the context of high-dose therapy with autologous stem cell rescue. Moreover, other combinations that have been reported to show encouraging outcomes, such as carfilzomib with pomalidomide and dexamethasone, are not included due to the lack of phase III data. Thus, this algorithm should not be taken as a representation of the full array of available therapies in this setting. “Carfilzomib” refers to the use of this drug as a single agent at the standard dose (20 mg/m2 on days 1, 2, 8, 9, 15, and 15 in cycle 1, and then 27 mg/m2 on the same days starting cycle 2), whereas “Carfilzomib/dex” refers to its use at a high dose, which is detailed in Table 1. As in Fig. 1, the options are presented alphabetically, and their order should not be construed as a suggestion of their appropriate sequencing, as such studies have not been performed. Finally, providers will need to consider the populations for which each of these regimens have been approved, as detailed in Table 1, in making their treatment decisions. For example, panobinostat with bortezomib and dexamethasone (dex) is approved for patients with two ormore prior therapies, and this regimen is, therefore, appropriate as a third-line or later treatment, but not yet as a second-line choice.