Baseline patient characteristics and therapeutic parameters of the 269 randomized patients receiving intermediate-dose methotrexate (ID-MTX) or high-dose methotrexate (HD-MTX)
. | Total . | ID-MTX . | HD-MTX . | P . | |||
---|---|---|---|---|---|---|---|
No. . | % . | No. . | % . | No. . | % . | ||
Total | 269 | (100) | 141 | (52) | 128* | (48) | |
Clinical parameters | |||||||
Sex | .611 | ||||||
Male | 174 | 65 | 89 | 63 | 85 | 66 | |
Female | 95 | 35 | 52 | 37 | 43 | 34 | |
Age at relapse | .610 | ||||||
Younger than 5 y | 26 | 10 | 13 | 9 | 13 | 10 | |
5 y or older and younger than 10 y | 143 | 53 | 79 | 56 | 64 | 50 | |
10 y and older | 100 | 37 | 49 | 35 | 51 | 40 | |
Time point of relapse† | .313 | ||||||
Very early | 10 | 4 | 7 | 5 | 3 | 2 | |
Early | 112 | 42 | 62 | 44 | 50 | 39 | |
Late | 147 | 55 | 72 | 51 | 75 | 59 | |
Site | .587 | ||||||
Bone marrow isolated | 156 | 58 | 85 | 60 | 71 | 56 | |
BM combined | 68 | 25 | 32 | 23 | 36 | 28 | .156 |
Plus CNS | 35 | 52 | 21 | 66 | 14 | 39 | |
Plus testis | 26 | 38 | 9 | 28 | 17 | 47 | |
Plus CNS/testis | 2 | 3 | 0 | 0 | 2 | 6 | |
Plus CNS/other | 1 | 2 | 0 | 0 | 1 | 3 | |
Plus other | 4 | 6 | 2 | 6 | 2 | 6 | |
Isolated extramedullary | 45 | 17 | 24 | 17 | 21 | 16 | .538 |
CNS | 18 | 40 | 9 | 38 | 9 | 43 | |
Testis | 25 | 56 | 14 | 58 | 11 | 52 | |
CNS/testis | 1 | 2 | 1 | 4 | 0 | 0 | |
Other | 1 | 2 | 0 | 0 | 1 | 5 | |
Peripheral blast cell count | .673 | ||||||
Less than 1/μL | 93 | 35 | 49 | 35 | 44 | 35 | |
1 to less than 10 000/μL | 142 | 53 | 72 | 41 | 70 | 55 | |
10 000/μL or more | 32 | 12 | 19 | 15 | 13 | 10 | |
No data | 2 | (.7) | 1 | (.7) | 1 | (.8) | |
BCR/ABL fusion transcript | .746 | ||||||
Positive | 11 | 9 | 6 | 8 | 5 | 11 | |
Negative | 115 | 91 | 73 | 92 | 42 | 89 | |
No data | 143 | (53) | 62 | (44) | 81 | (63) | |
Immunophenotype‡ | .082 | ||||||
Pro-B | 12 | 5 | 10 | 7 | 2 | 2 | |
Common ALL | 191 | 73 | 95 | 69 | 96 | 77 | |
Pre-B | 58 | 22 | 33 | 24 | 25 | 20 | |
Biphenotypic | 1 | .4 | 0 | 0 | 1 | .8 | |
No data | 7 | (3) | 3 | (2) | 4 | (3) | |
Treatment | |||||||
Frontline protocol | .887 | ||||||
ALL-BFM | 179 | 67 | 98 | 70 | 81 | 63 | |
COALL | 31 | 12 | 16 | 12 | 15 | 12 | |
Other | 59 | 22 | 27 | 19 | 32 | 25 | |
Irradiation at relapse | .792 | ||||||
None | 88 | 33 | 47 | 34 | 41 | 32 | |
Cranial | 94 | 36 | 45 | 33 | 49 | 38 | |
Craniospinal | 37 | 14 | 21 | 15 | 16 | 13 | |
TBI | 46 | 17 | 24 | 18 | 22 | 17 | |
No data | 4 | (2) | 4 | (3) | 0 | 0 | |
Stem-cell transplantation in CR2 | |||||||
None | 214 | 80 | 110 | 78 | 104 | 81 | .426 |
Matched family donor | 32 | 12 | 17 | 12 | 15 | 12 | |
Unrelated donor | 9 | 3 | 7 | 5 | 2 | 2 | |
Mismatched family donor | 4 | 2 | 1 | 1 | 3 | 2 | |
Autologous | 10 | 4 | 6 | 4 | 4 | 3 |
. | Total . | ID-MTX . | HD-MTX . | P . | |||
---|---|---|---|---|---|---|---|
No. . | % . | No. . | % . | No. . | % . | ||
Total | 269 | (100) | 141 | (52) | 128* | (48) | |
Clinical parameters | |||||||
Sex | .611 | ||||||
Male | 174 | 65 | 89 | 63 | 85 | 66 | |
Female | 95 | 35 | 52 | 37 | 43 | 34 | |
Age at relapse | .610 | ||||||
Younger than 5 y | 26 | 10 | 13 | 9 | 13 | 10 | |
5 y or older and younger than 10 y | 143 | 53 | 79 | 56 | 64 | 50 | |
10 y and older | 100 | 37 | 49 | 35 | 51 | 40 | |
Time point of relapse† | .313 | ||||||
Very early | 10 | 4 | 7 | 5 | 3 | 2 | |
Early | 112 | 42 | 62 | 44 | 50 | 39 | |
Late | 147 | 55 | 72 | 51 | 75 | 59 | |
Site | .587 | ||||||
Bone marrow isolated | 156 | 58 | 85 | 60 | 71 | 56 | |
BM combined | 68 | 25 | 32 | 23 | 36 | 28 | .156 |
Plus CNS | 35 | 52 | 21 | 66 | 14 | 39 | |
Plus testis | 26 | 38 | 9 | 28 | 17 | 47 | |
Plus CNS/testis | 2 | 3 | 0 | 0 | 2 | 6 | |
Plus CNS/other | 1 | 2 | 0 | 0 | 1 | 3 | |
Plus other | 4 | 6 | 2 | 6 | 2 | 6 | |
Isolated extramedullary | 45 | 17 | 24 | 17 | 21 | 16 | .538 |
CNS | 18 | 40 | 9 | 38 | 9 | 43 | |
Testis | 25 | 56 | 14 | 58 | 11 | 52 | |
CNS/testis | 1 | 2 | 1 | 4 | 0 | 0 | |
Other | 1 | 2 | 0 | 0 | 1 | 5 | |
Peripheral blast cell count | .673 | ||||||
Less than 1/μL | 93 | 35 | 49 | 35 | 44 | 35 | |
1 to less than 10 000/μL | 142 | 53 | 72 | 41 | 70 | 55 | |
10 000/μL or more | 32 | 12 | 19 | 15 | 13 | 10 | |
No data | 2 | (.7) | 1 | (.7) | 1 | (.8) | |
BCR/ABL fusion transcript | .746 | ||||||
Positive | 11 | 9 | 6 | 8 | 5 | 11 | |
Negative | 115 | 91 | 73 | 92 | 42 | 89 | |
No data | 143 | (53) | 62 | (44) | 81 | (63) | |
Immunophenotype‡ | .082 | ||||||
Pro-B | 12 | 5 | 10 | 7 | 2 | 2 | |
Common ALL | 191 | 73 | 95 | 69 | 96 | 77 | |
Pre-B | 58 | 22 | 33 | 24 | 25 | 20 | |
Biphenotypic | 1 | .4 | 0 | 0 | 1 | .8 | |
No data | 7 | (3) | 3 | (2) | 4 | (3) | |
Treatment | |||||||
Frontline protocol | .887 | ||||||
ALL-BFM | 179 | 67 | 98 | 70 | 81 | 63 | |
COALL | 31 | 12 | 16 | 12 | 15 | 12 | |
Other | 59 | 22 | 27 | 19 | 32 | 25 | |
Irradiation at relapse | .792 | ||||||
None | 88 | 33 | 47 | 34 | 41 | 32 | |
Cranial | 94 | 36 | 45 | 33 | 49 | 38 | |
Craniospinal | 37 | 14 | 21 | 15 | 16 | 13 | |
TBI | 46 | 17 | 24 | 18 | 22 | 17 | |
No data | 4 | (2) | 4 | (3) | 0 | 0 | |
Stem-cell transplantation in CR2 | |||||||
None | 214 | 80 | 110 | 78 | 104 | 81 | .426 |
Matched family donor | 32 | 12 | 17 | 12 | 15 | 12 | |
Unrelated donor | 9 | 3 | 7 | 5 | 2 | 2 | |
Mismatched family donor | 4 | 2 | 1 | 1 | 3 | 2 | |
Autologous | 10 | 4 | 6 | 4 | 4 | 3 |
Missing values are not included in the calculation of percentages and P values.
BM indicates bone marrow; BFM, Berlin-Frankfurt-Münster Study Group; CNS, central nervous system; COALL, Cooperative ALL Study Group; CR2, second complete remission; and TBI, total body irradiation.
Four patients randomized to treat with HD-MTX received ID-MTX due to parental decision.
Very early indicates within 18 month after primary diagnosis; early, after 18 months after primary diagnosis and within 6 months after elective cessation of frontline therapy; and late, later than 6 months after elective cessation of therapy.
Immunophenotype classified according to EGIL.33