{"denoms":[{"counts":[{"groupId":"OG000","value":"0"}],"units":"Participants"}],"description":"CD20 immunohistochemical staining of plasma cells on baseline bone marrow biopsy specimen, graded on qualitative scale (0 to +++)","groups":[{"description":"90Y Zevalin: Each patient will receive a single therapeutic dose of 90Y Zevalin at a dose of 0.4 mCi/kg, capped at a maximum dose of 32 mCi.","id":"OG000","title":"Zevalin"}],"populationDescription":"Immunohistochemical analysis showed inconsistent / insufficient CD20 staining on surface of plasma cells; comparisons could not be made","reportingStatus":"POSTED","timeFrame":"2 weeks prior - 2 weeks post transplant","title":"Degree of CD20 Expression on Plasma Cells and/or Targeting of Post-germinal Center B Cells Correlation With Toxicity, Response and Biodistribution","type":"SECONDARY"}