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ISS staging of multiple myeloma.
| Stage | Median survival time | |
|---|---|---|
| Stage 1 | Serum beta-2 microglobulin is less than 3.5 (mg/L) and the albumin level is 3.5 (g/dL) or greater | 62 months |
|
| ||
| Stage 2 | The beta-2 microglobulin level is between 3.5 and 5.5 (with any albumin level) or The albumin is below 3.5, while the beta-2 microglobulin is less than 3.5 |
44 months |
|
| ||
| Stage 3 | Serum beta-2 microglobulin is 5.5 or greater. | 29 months |
