P908: FACTORS ASSOCIATED WITH THE CLINICAL PROGNOSTIC PERFORMANCE OF MINIMAL RESIDUAL DISEASE ASSESSMENT BY NEXT GENERATION FLOW CYTOMETRY IN MULTIPLE MYELOMA - B. Nandakumar; A. Baranwal; M. Ebraheem; H. Olteanu; M. Shi; S. Kumar; W. Gonsalves; D. Jevremovic (HemaSphere, 2022)