More than two courses of pre-transplant consolidation therapy benefits patients with acute myeloid leukemia in the first complete remission who underwent human leukocyte antigen-matched sibling allografts: a multicenter study / 中华医学杂志(英文版)

BACKGROUND@#Although the need for consolidation chemotherapy after successful induction therapy is well established in patients with acute myeloid leukemia (AML) in first complete remission (CR1), the value of consolidation chemotherapy before allogeneic hematopoietic stem cell transplantation remains controversial.@*METHODS@#We retrospectively compared the effect of the number of pre-transplant consolidation chemotherapies on outcomes of human leukocyte antigen-matched sibling stem cell transplantation (MSDT) for patients with AML in CR1 in multicenters across China. In our study, we analyzed data of 373 AML patients in CR1 from three centers across China.@*RESULTS@#With a median follow-up of 969 days, patients with ≥ 3 courses of consolidation chemotherapy had higher probabilities of leukemia-free survival (LFS) (85.6% vs . 67.0%, P < 0.001) and overall survival (89.2% vs . 78.5%, P  = 0.007), and better cumulative incidences of relapse (10.5% vs . 19.6%, P  = 0.020) and non-relapse mortality (4.2% vs . 14.9%, P  = 0.001) than those with ≤ 2 courses of consolidation chemotherapy. Pre-transplantation minimal residual disease-negative patients with AML in CR1 who received MSDT with ≥ 3 courses of consolidation chemotherapy had a higher probability of LFS (85.9% vs . 67.7%, P  = 0.003) and a lower cumulative incidence of relapse (9.6% vs . 23.3%, P  = 0.013) than those with ≤ 2 courses.@*CONCLUSION@#Our results indicate that patients with AML in CR1 who received MSDT might benefit from pre-transplant consolidation chemotherapy.

Evaluación del tratamiento de inducción y consolidación clásico en la leucemia aguda no linfoblástica de Novo / Evaluation of induction and consolidation classic treatment in de Novo acute non-lymphoblastic leukemia

Introducción: la validación de las alteraciones citogenéticas y moleculares presentes al diagnóstico constituyen los factores pronósticos más importantes de la leucemia aguda no linfoblástica y ha permitido establecer el riesgo individual, estratificar a los pacientes e individualizar su tratamiento. Objetivo: describir el comportamiento clínico y la evolución de pacientes con leucemia aguda no linfoblástica, no promielocítica, de novo, que recibieron tratamiento de inducción y consolidación clásico en el servicio de Hematología del Hospital Clínico Quirúrgico Hermanos Ameijeiras. Método: se realizó un estudio descriptivo, longitudinal y prospectivo que incluyó 23 pacientes ingresados entre mayo de 2008 y enero de 2011. Se estratificaron los pacientes en grupos de riesgo favorable, intermedio y desfavorable, teniendo en cuenta factores pronóstico clínicos, biológicos, citogenéticos y moleculares. Resultados: el 60,9 por ciento presentó recuento de leucocitos menor de 25 x 10(9)/L; el 47,8 por ciento tuvo la variante mielomonocítica, el 21,7 por ciento presentó cariotipo normal y el 10 por ciento la translocación (8;21). Las mutaciones del gen FLT3 y el gen NPM1 estuvieron presentes en 2 y 4 pacientes respectivamente. Con el tratamiento de inducción, el 84,2 por ciento alcanzó la remisión completa, predominaron los pacientes en el grupo de riesgo favorable sin diferencias significativas. En el grupo de riesgo molecular favorable el número de remisiones completas fue significativamente mayor (85,7 por ciento) (p = 0.05). El grupo de pacientes de riesgo favorable que se mantuvo en remisión completa con el tratamiento de consolidación representó el 54,5 por ciento, aunque no resultó significativo

Introduction: validation of cytogenetic and molecular abnormalities present at diagnosis is the most important prognostic factors of acute non-lymphoblastic leukemia. This has allowed us to establish the individual risk, stratify the patients and individualize their treatment. Objective: to describe the clinical behavior and outcome of patients with acute de novo non-lymphoblastic non-promyelocytic leukemia, receiving induction and classic consolidation therapy at the Department of Hematology of the Clinical Surgical Hospital Hermanos Ameijeiras. Methods: a descriptive, prospective longitudinal study was carried out with 23 patients admitted between May 2008 and January 2011. Patients were stratified into: favorable, intermediate, poor risk groups, according to biological, molecular and cytogenetics clinical prognostic factors. Results: 60.9 percent of patients had leukocyte counts less than 25 x 10(9)/L, 47.8 percent had myelomonocytic variant, 21.7 percent had normal karyotype and 10 percent had translocation (8; 21). Mutations of the genes FLT3 and NPM1 were present in 2 and 3 patients respectively. 84 percent of patients undergoing induction therapy achieved complete remission, predominantly the ones in the favorable risk group with no significant differences. In the favorable molecular risk group, the number of complete remissions was significantly higher (85.7 percent) (p=0.05). The group of favorable risk patients remaining in complete remission with the consolidation treatment had 54.5 percent, although it was not significant. Conclusions: the disease free survival was greater whereas overall survival rate was similar to the data reported in the international literature. Both were higher within the favorable risk group but without no significant difference, what is considered an important achievement of Cuban Healthcare System