P774: CLINICAL OUTCOMES ASSOCIATED WITH AZACITIDINE MONOTHERAPY FOR TREATMENT-NAIVE PATIENTS WITH HIGHER-RISK MYELODYSPLASTIC SYNDROME (HR MDS): A SYSTEMATIC LITERATURE REVIEW AND META-ANALYSIS. (23rd June 2022) - Hasegawa, K.; Wei, A. H.; Garcia-Manero, G.; Daver, N. G.; Rajakumaraswamy, N.; Iqbal, S.; Chan, R. J.; Hu, H.; Tse, P.; Yan, J.; Zoratti, M. J.; Xie, F.; et al.