| RARS | Refractory Anemia with Ringed Sideroblast = AISA |
|---|---|
| ARMS | adverse reaction monitoring system; amplification refractory mutation system |
| IARSA | idiopathic acquired refractory sideroblastic anemia |
| IRSA | idiopathic refractory sideroblastic anemia; iodinated rat serum albumin |
| RAEB | refractory anemia with excess blasts |