In:
Blood, American Society of Hematology, Vol. 108, No. 11 ( 2006-11-16), p. 1949-1949
Abstract:
Background: In primary refractory patients the achievement of a response to salvage therapy is of enormous prognostic impact. Aims: To evaluate the impact of all-trans retinoic acid (ATRA) and gemtuzumab ozogamicin (GO) given as adjunct to high-dose cytarabine based intensive salvage therapy in primary refractory younger patients on clinical outcome. Methods: Between 1993 and 2006 264 consecutive patients (median age: 48 yrs) were evaluated. All patients had primary refractory AML after one cycle of ICE (idarubicine, cytarabine, etoposide). The different salvage therapies were as follows: from 1993–1998: S-HAM for patients 〈 55 years of age [cytarabine 3g/m2 bid. days 1,2,8,9, mitoxantrone 10mg/m2 days 3,4,10,11] and HAM for patients 〉 =55 years of age [cytarabine 3g/m2 bid., days 1–3, mitoxantrone 12mg/m2 days 2,3]; from 1998 to 2004 A-HAM [HAM with ATRA 45mg/m2 days 3–5, 15mg/m2 days 6–28] ; from 2004 up to date: GO-A-HAM [A-HAM with gemtuzumab ozogamicin 3g/m2 day 1]. Results: The distribution of the different salvage therapies was HAM n=21, S-HAM n=22, A-HAM n=118, GO-A-HAM n=62, other n=31, or no further therapy n=10. CR-rate according to salvage therapy was GO-A-HAM 49%, A-HAM 34% S-HAM 23%, HAM 14%. Treatment related mortality did not differ between regimens. No CTC-grade 3–5 liver toxicity was seen in patients receiving GO-A-HAM. Logistic regression on the achievement of CR revealed that regimens containing ATRA (odds ratio 2.0, p=0.05) and GO (odds ratio 1.9 p=0.05) were associated with response. 151 of 264 patients have received a stem cell transplantation as consolidation therapy (n=59 MRD, n=79 MUD, n=6 haplo-identical donor, n=7 autologous). The rates of severe veno occlusive disease after transplant was identical (5%) for patients receiving a salvage therapy including GO and those who did not. Survival analysis revealed a significant difference (p= 0.00178) with a median survival of 16.2 months for GO+ATRA, 12.5 months for ATRA versus 7.2 months for the others. Conclusions: Although retrospective in nature our study suggests that ATRA and GO as adjunct to salvage therapy improves CR rates and survival in primary refractory AML patients.
Type of Medium:
Online Resource
ISSN:
0006-4971
,
1528-0020
DOI:
10.1182/blood.V108.11.1949.1949
Language:
English
Publisher:
American Society of Hematology
Publication Date:
2006
detail.hit.zdb_id:
1468538-3
detail.hit.zdb_id:
80069-7
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