Baseline characteristics of the 47 patients with nonmeasurable multiple myeloma who had sufficient residual serum for MALDI-TOF MS testing
| Clinical parameter . | No. of patients (%) . |
|---|---|
| NSMM (n = 22) | |
| Normal FLC ratio | 8 (36.4) |
| iFLC < 50 mg/L with abnormal FLC ratio | 7 (31.8) |
| iFLC 50-100 mg/L with abnormal FLC ratio | 7 (31.8) |
| Urinary light chains | |
| <200 mg/g creatinine (range 0-70 mg/g creatinine) | 18 (81.8) |
| Missing | 4 (18.2) |
| Immune paresis | 17 (77.3) |
| Serum creatinine <177 μmol/L | 22 (100) |
| ISS | |
| 1 | 16 (72.7) |
| 2 | 4 (18.2) |
| 3 | 2 (9.1) |
| OSMM (n = 25) | |
| IgG monoclonal protein | 13 (52.0) |
| IgA monoclonal protein | 10 (40.0) |
| Light chain only | 1 (4.0) |
| Biclonal | 1 (4.0) |
| Monoclonal protein <5 g/L (range 0-4.11 g/L) | 8 (32.0) |
| Monoclonal protein 5 to <10 g/L (range 5.0-9.3 g/L) | 17 (68.0) |
| Normal FLC ratio | 4 (16.0) |
| iFLC < 50 mg/L with abnormal FLC ratio | 17 (68.0) |
| iFLC 50-100 mg/L with abnormal FLC ratio | 4 (16.0) |
| Immune paresis | 21 (84.0) |
| Serum creatinine <177 μmol/L | 25 (100) |
| ISS | |
| 1 | 17 (68.0) |
| 2 | 6 (24.0) |
| 3 | 1 (4.0) |
| Missing | 1 (4.0) |
| Clinical parameter . | No. of patients (%) . |
|---|---|
| NSMM (n = 22) | |
| Normal FLC ratio | 8 (36.4) |
| iFLC < 50 mg/L with abnormal FLC ratio | 7 (31.8) |
| iFLC 50-100 mg/L with abnormal FLC ratio | 7 (31.8) |
| Urinary light chains | |
| <200 mg/g creatinine (range 0-70 mg/g creatinine) | 18 (81.8) |
| Missing | 4 (18.2) |
| Immune paresis | 17 (77.3) |
| Serum creatinine <177 μmol/L | 22 (100) |
| ISS | |
| 1 | 16 (72.7) |
| 2 | 4 (18.2) |
| 3 | 2 (9.1) |
| OSMM (n = 25) | |
| IgG monoclonal protein | 13 (52.0) |
| IgA monoclonal protein | 10 (40.0) |
| Light chain only | 1 (4.0) |
| Biclonal | 1 (4.0) |
| Monoclonal protein <5 g/L (range 0-4.11 g/L) | 8 (32.0) |
| Monoclonal protein 5 to <10 g/L (range 5.0-9.3 g/L) | 17 (68.0) |
| Normal FLC ratio | 4 (16.0) |
| iFLC < 50 mg/L with abnormal FLC ratio | 17 (68.0) |
| iFLC 50-100 mg/L with abnormal FLC ratio | 4 (16.0) |
| Immune paresis | 21 (84.0) |
| Serum creatinine <177 μmol/L | 25 (100) |
| ISS | |
| 1 | 17 (68.0) |
| 2 | 6 (24.0) |
| 3 | 1 (4.0) |
| Missing | 1 (4.0) |