Multivariate analysis of prognostic variables, serum M-spike response, and PCLI response
| Prognostic variable . | Proportional hazard ratio . | 95% CI . | P . |
|---|---|---|---|
| Initial PCLI ≥ 3% | 2.71 | 1.52-4.62 | .001* |
| Serum M-spike response < 50% | 1.47 | 1.01-2.16 | .047* |
| PCLI response < 60% | 1.70 | 1.14-2.03 | .009* |
| β2M > 3.5 mg/dL | 1.33 | 0.87-2.03 | .19 |
| Creatinine > 1.4 | 1.20 | 0.76-1.88 | .43 |
| Prognostic variable . | Proportional hazard ratio . | 95% CI . | P . |
|---|---|---|---|
| Initial PCLI ≥ 3% | 2.71 | 1.52-4.62 | .001* |
| Serum M-spike response < 50% | 1.47 | 1.01-2.16 | .047* |
| PCLI response < 60% | 1.70 | 1.14-2.03 | .009* |
| β2M > 3.5 mg/dL | 1.33 | 0.87-2.03 | .19 |
| Creatinine > 1.4 | 1.20 | 0.76-1.88 | .43 |
β2M indicates β2-microglobulin; CI, confidence interval; and PCLI, plasma cell labeling index.
Statistically significant.