{"denomUnitsSelected":"Participants","description":"BCMA expression at specified timepoints will be determined by immunohistochemical staining of bone marrow biopsy specimens and/or flow cytometric analysis of bone marrow aspirate material, in order to assess for baseline expression and potential loss of expression post-treatment. Both percent of MM cells that stain positive as well as staining intensity will be reported.","reportingStatus":"NOT_POSTED","timeFrame":"1 Year","title":"Exploratory Objective 2: BCMA Expression","type":"OTHER_PRE_SPECIFIED"}