Sequential administration of methotrexate and asparaginase in relapsed or refractory pediatric acute myeloid leukemia.

Abstract:

BACKGROUND:The efficacy of combination chemotherapy with methotrexate (MTX) and asparaginase is not well known in relapsed and refractory acute leukemia after contemporary therapy. PROCEDURE:A retrospective study of pediatric patients with relapsed or refractory acute myeloid leukemia (AML) who received MTX and asparaginase as a salvage therapy at St. Jude Children Research Hospital was performed. MTX was given intravenously followed by a dose of asparaginase intramuscularly or intravenously 24 hours later. The chemotherapy cycle was repeated every 7-10 days. Response, survival, and toxicities were evaluated. RESULTS:Fifteen patients, median age 10.5 years (range, 1.1-18.5 years), were treated. Median number of previous therapeutic regimens was three (range, 1-4). Six patients responded to treatment (three had morphologic complete remission with incomplete blood count recovery, two had partial remission, and one had stable disease for 16 months), and four are still alive. Three of six responders had monoblastic leukemia, and also developed tumor lysis syndrome. The 1- and 2-year overall survival rates are 35.6% and 17.8%, respectively. The most common adverse event was transient elevation of transaminases (nine patients). Two patients developed pancreatitis. Episodes of febrile neutropenia were rare (two patients), and most courses (75 out of 93 total courses) were given in an outpatient setting. CONCLUSIONS:Combination chemotherapy with MTX and asparaginase appears to be an effective salvage therapy and well tolerated in patients with relapsed or refractory childhood AML, even in those heavily pretreated with contemporary frontline or salvage therapy.

journal_name

Pediatr Blood Cancer

journal_title

Pediatric blood & cancer

authors

Buaboonnam J,Cao X,Pauley JL,Pui CH,Ribeiro RC,Rubnitz JE,Inaba H

doi

10.1002/pbc.24470

subject

Has Abstract

pub_date

2013-07-01 00:00:00

pages

1161-4

issue

7

eissn

1545-5009

issn

1545-5017

journal_volume

60

pub_type

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