Complete remission rates, reasons for failure, relapse risk, and survival in Medical Research Council trial AML11 by the new hierarchical cytogenetic risk group
Cytogenetic risk group4-150 . | Total no. . | CR and reason for failure . | Relapse risk at 5 years, % (SE) . | Overall survival . | |||
---|---|---|---|---|---|---|---|
CR rate, % . | Induction deaths, % . | Resistant disease, % . | At 5 years, % (SE) . | Median . | |||
Favorable | 78 | 724-151 | 21 | 84-151 | 56 (7.5)4-151 | 34 (5.7)4-151 | 559 days4-151 |
Intermediate | 842 | 59 | 18 | 23 | 81 (1.9) | 13 (1.2) | 276 days |
Adverse | 145 | 26 | 19 | 56 | 91 (5.1) | 2 (1.2) | 113 days |
Cytogenetic risk group4-150 . | Total no. . | CR and reason for failure . | Relapse risk at 5 years, % (SE) . | Overall survival . | |||
---|---|---|---|---|---|---|---|
CR rate, % . | Induction deaths, % . | Resistant disease, % . | At 5 years, % (SE) . | Median . | |||
Favorable | 78 | 724-151 | 21 | 84-151 | 56 (7.5)4-151 | 34 (5.7)4-151 | 559 days4-151 |
Intermediate | 842 | 59 | 18 | 23 | 81 (1.9) | 13 (1.2) | 276 days |
Adverse | 145 | 26 | 19 | 56 | 91 (5.1) | 2 (1.2) | 113 days |
P values are for Mantel-Haenszel (CR and reasons for failure) or log-rank (relapse risk and overall survival) test for trend. All P values remain at a similar level of significance when adjusted for age, type of leukemia (de novo or secondary), and white blood count at presentation.
CR indicates complete remission.
Favorable: t(15;17), t(8;21), or inv(16) whether alone or in conjunction with other abnormalities. Intermediate: normal karyotype, all other noncomplex abnormalities. Adverse: complex karyotype (5 or more unrelated abnormalities), excluding cases with t(15;17), t(8;21), and inv(16).
P < .001.