| ARCH | CHIP | ICUS | CCUS | Lower-risk MDS | Higher-risk MDS | |
| Clonality (VAF %) | Any, but generally <2% | ≥2% | <2% | ≥2% | Variable; usually ≥2% | Variable; usually ≥2% |
| Dysplasia | – | <10% | <10% | <10% | ≥10% in most cases | ≥10% in most cases |
| Cytopenias | – | – | + | + | + | + |
| BM blast % | <5% | <5% | <5% | <5% | <5% | <20% |
| Risk of progression to AML | Very low | Very low | Very low | Low | Low | High |
