| FRP | follicle-stimulating hormone releasing protein; functional refractory period |
|---|---|
| IARSA | idiopathic acquired refractory sideroblastic anemia |
| IRSA | idiopathic refractory sideroblastic anemia; iodinated rat serum albumin |
| RAEB | refractory anemia with excess blasts |
| RAEBiT, RAEB-T | refractory anemia with excess blasts in transformation |