{"denomUnitsSelected":"Participants","description":"BCRP function will be assayed in multiple myeloma patient bone marrow aspirates obtained before and during high dose chemotherapy. BCRP function is expressed as the change in relative fluorescence in topotecan versus control cells. The distribution of paired differences in BCRP, a continuous variable, will be summarized using descriptive statistics and will be correlated with response and toxicity.","reportingStatus":"NOT_POSTED","timeFrame":"Laboratory study (N/A)","title":"Breast Cancer Resistance Protein (BCRP) Expression","type":"OTHER_PRE_SPECIFIED"}