Patient Characteristics at Enrollment (n = 25)
| Median age | 48 (range, 29-60) |
| Men | 13 |
| Women | 12 |
| SWOG performance status | |
| 1 | 10 |
| 2 | 12 |
| 3 | 3 |
| Months from diagnosis | |
| 0-3 | 4 |
| 3-12 | 18 |
| >12 | 3 |
| Prior oral melphalan | |
| 0 | 16 |
| <200 mg | 2 |
| >200 mg | 7 |
| Median number of biopsies positive for amyloid | 2 (range, 2-4) |
| M-protein in serum and urine | 14 |
| M-protein in urine only | 9 |
| M-protein light chain isotype: K/λ | 5/18 |
| Clonal bone marrow plasmacytosis only | 2 |
| Marrow amyloid depositions present | 18 |
| Grade 2 or 3 marrow amyloid depositions | 8 |
| Hypogammaglobulinemia | 17 |
| Howell-Jolly bodies | 7 |
| Median age | 48 (range, 29-60) |
| Men | 13 |
| Women | 12 |
| SWOG performance status | |
| 1 | 10 |
| 2 | 12 |
| 3 | 3 |
| Months from diagnosis | |
| 0-3 | 4 |
| 3-12 | 18 |
| >12 | 3 |
| Prior oral melphalan | |
| 0 | 16 |
| <200 mg | 2 |
| >200 mg | 7 |
| Median number of biopsies positive for amyloid | 2 (range, 2-4) |
| M-protein in serum and urine | 14 |
| M-protein in urine only | 9 |
| M-protein light chain isotype: K/λ | 5/18 |
| Clonal bone marrow plasmacytosis only | 2 |
| Marrow amyloid depositions present | 18 |
| Grade 2 or 3 marrow amyloid depositions | 8 |
| Hypogammaglobulinemia | 17 |
| Howell-Jolly bodies | 7 |