“…The patients receiving HMAs also had a lower NRM than those under observation (pooled RR, 0.36; 95% CI, 0.19–0.66; I 2 , 0%; Figure 3A ) ( 14 , 16 , 18 , 19 , 28 ). Furthermore, the CIR was significantly higher for the observed patients (pooled RR, 0.69; 95% CI, 0.50–0.95; I 2 , 67%; Figure 3B ) ( 14 , 16 , 18 , 19 , 21 , 24 , 25 , 28 , 29 ). However, the incidences of grades III–IV acute GVHD and chronic GVHD of the groups did not differ [pooled RR, 0.88; 95% CI, 0.30–2.60; I 2 , 604% (14, 17, 22, 24, 25); and pooled RR, 0.84; 95% CI, 0.58–1.23; I 2 , 65% (22, 24, 25, 29); Figures 4A,B , respectively].…”