Frequency of leukemia-associated aberrations of chromosomes 7 and 8 in the side population and non–side population stem cell compartments at initial diagnosis
Patient* . | % Blasts in BM . | CD34low/−SP . | CD34+ non-SP . |
---|---|---|---|
Monosomy 7 | |||
1 | < 5 | 6 | 5 |
2 | < 5 | 12.5 | 0 |
3 | < 5 | 7.4 | 16 |
4 | 18 | 68 | 79 |
5 | 12 | 12 | 4.5 |
6 | 15 | 9 | 18.1 |
7a | < 5* | 5.5 | 6.7 |
8 | 90 | 84.5 | 93 |
9 | 80 (PB) | 90 | 89 |
Trisomy 8 | |||
10 | 50 | 18 | 11.5 |
11 | 57 | 40 | 40 |
12 | 52 | 57.5 | 42.5 |
13 | 71 | 42.1 | 13.2 |
14 | 85 | — | 47.1 |
15 | 16 | 28.5 | 10 |
7b | < 5* | 11 | 19.5 |
16 | < 5 | 2 | 0.5 |
Patient* . | % Blasts in BM . | CD34low/−SP . | CD34+ non-SP . |
---|---|---|---|
Monosomy 7 | |||
1 | < 5 | 6 | 5 |
2 | < 5 | 12.5 | 0 |
3 | < 5 | 7.4 | 16 |
4 | 18 | 68 | 79 |
5 | 12 | 12 | 4.5 |
6 | 15 | 9 | 18.1 |
7a | < 5* | 5.5 | 6.7 |
8 | 90 | 84.5 | 93 |
9 | 80 (PB) | 90 | 89 |
Trisomy 8 | |||
10 | 50 | 18 | 11.5 |
11 | 57 | 40 | 40 |
12 | 52 | 57.5 | 42.5 |
13 | 71 | 42.1 | 13.2 |
14 | 85 | — | 47.1 |
15 | 16 | 28.5 | 10 |
7b | < 5* | 11 | 19.5 |
16 | < 5 | 2 | 0.5 |
The results of interphase fluorescence in situ hybridization are given as percentages of 200 sorted bone marrow cells.
BM indicates bone marrow; SP, side population; PB, peripheral blood.
Nine patients had fewer than 200 analyzable nuclei as follows: patient 1 non-SP (187 cells), patient 2 non-SP (12 cells), patient 3 SP (68 cells), patient 11 SP (30 cells), patient 12 SP (40 cells), patient 13 SP (138 cells)/non-SP (113 cells); patient 14 SP (136 cells); patient 7b SP (110 cells)/non-SP (173 cells) patient 15 non-SP (179 cells).
At initial diagnosis, the acute myeloid leukemia in case 7 was characterized by monosomy 7 and trisomy 8.