PROGNOSTIC-SIGNIFICANCE OF KARYOTYPE IN A 12-YEAR FOLLOW-UP IN CHILDHOOD ACUTE LYMPHOBLASTIC-LEUKEMIA

被引:12
作者
DASTUGUE, N
ROBERT, A
PAYEN, C
CLEMENT, D
KESSOUS, A
DEMUR, C
RUBIE, H
PLAISANCIE, H
BOURROUILLOU, G
COLOMBIES, P
机构
[1] CHU PURPAN,UNITE HEMATOL INFANTILE PEDIAT B,F-31052 TOULOUSE,FRANCE
[2] CHU PURPAN,INFORMAT MED LAB,F-31052 TOULOUSE,FRANCE
[3] CHU PURPAN,INSERM,U100,F-31052 TOULOUSE,FRANCE
关键词
D O I
10.1016/0165-4608(92)90322-Y
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
We report a follow-up of 49 children with acute lymphoblastic leukemia [ALL] diagnosed between 1972 and 1978 [follow-up 12-18 years], This series allowed us to analyze the predictive value of karyotype in a long-term follow-up. Karyotypes were abnormal in 33 cases [67.3%]: pseudodiploidy in 11 [22.4%], hyperdiploidy >50 chromosomes in 8 [16.3%], hyperdiploidy 47-50 chromosomes in 11 [22.4%], and hypodiploidy in 3 cases [6.1%]. Event-free survival [EFS] and survival studies showed that the outcome of patients was determined only by treatment and karyotype. Eleven patients have survived, nine in first remission [6 years 5 months to 15 years 2 months], and two are in second remission [3 years 8 months and 8 years 2 months]. All ploidy groups are represented in these patients. Late relapses can occur in the hyperdiploid >50 group, thus accounting for shorter EFS than expected, but because of the unusually long second remission of one patient, the rate of surviving patients was higher for this ploidy group than for all other ploidy groups together. Conversely, patients with only numerical abnormalities [no matter which ploidy group they belonged to], had a better outcome than did patients with structural changes or normal karyotypes and no discrepancy between EFS and survival curves was observed in this chromosomal group. Thus, our results suggest that numerical changes only should be considered an indicator of low risk factor, but our results, based on partially banded karyotypes, need to be verified by a current method and therapy.
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页码:49 / 55
页数:7
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