Table 1. Clinical and laboratory characteristics of included RCC patients.
| Characteristic | |
|---|---|
| Number of patients | 92 |
| Median age at diagnosis, years (range) | 10.3 (1–18) |
| Male sex, no. (%) | 46 (50) |
| Hypocellular bone marrow, no. (%) | 74 of 90 (82) |
| Cytogenetics, no. (%)a | |
| Normal | 67 of 78 (86) |
| Monosomy 7b | 5 of 78 (6) |
| Otherc | 6 of 78 (8) |
Abbreviation: RCC, refractory cytopenia of childhood.
a
In 12 of 90 patients (13%) no karyotype was obtained due to insufficient metaphases; in 2 patients no data were available.
b
Includes one patient with monosomy 7 and other aberrations.
c
Includes one patient with del(7q), two patients with trisomy 8 and three patients with rare aberrations.