The MFIr (mean fluorescence intensity ratio) ranged from 1.12 to 10.9 (median MFIr 3.75) for BCMA staining in the myeloma cells of these patients, and from 2.57 to 57.45 (median MFIr 11.05) for FcRH5 staining (Fig. 1c). The gene discussed is FCRL5; the disease is plasma cell myeloma.