Bortezomib ( bort ) -dexamethasone ( dex ) is an effective therapy for relapsed/refractory ( R/R ) multiple myeloma ( MM ) .
B-ChemicalEntity O B-ChemicalEntity O I-ChemicalEntity O B-ChemicalEntity O O O O O O O O O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature O B-DiseaseOrPhenotypicFeature O O