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992    Part VII  Hematologic Malignancies

                                                              CONCLUSION
         BOX 62.3  Treatment of Relapsed Acute Myeloid Leukemia
          The treatment outcome for patients with acute myeloid leukemia (AML)   Recent studies of the genetics and biology of AML have identified
          who have suffered relapse of their disease is poor. On a recent inter-  new therapeutics targets and have led to the development of novel
          national trial for patients with refractory disease or in first relapse, the   therapies, many of which are now in early-phase clinical trials. We
          complete remission and overall survival rates were only 64% and 38%,   hope that these efforts will lead to the development of more effective
          respectively.  For  patients  in  second  or  later  relapse,  the  outcome  is   and less toxic treatments in the near future. However, the evaluation
          even worse, indicating that these patients are candidates for experi-  of  these  treatment  strategies  will  require  collaboration  between
          mental approaches. Such approaches include the use of novel tyrosine   cooperative groups to ensure that adequate numbers of patients to
          kinase  inhibitors,  epigenetic  therapy,  and  immunotherapy.  Patients   which each therapy is directed can be studied.
          with FLT3-mutated relapsed AML should be enrolled on clinical trials
          that incorporate second- or third-generation FLT3 inhibitors, such as
          crenolanib, especially if they have previously received sorafenib. For
          patients who do not have activating kinase mutations, epigenetic strate-  SUGGESTED READINGS
          gies  may  be  appropriate  and  may  include  the  use  of  azacytidine,
          decitabine, vorinostat, or panobinostat. The DOT1L inhibitor EPZ-5676   Andersson A, Ma J, Wang J, et al: The landscape of somatic mutations in
          should  be  considered  in  patients  with  MLL  gene  rearrangements.   infant MLL rearranged acute lymphoblastic leukemias. Nat Genet 47:330,
          Although immunotherapeutic options are limited at this time, it is likely   2015.
          that clinical trials of antibody therapy (SGN-CD33A, AML 330) or chi-  Creutzig U, Zimmermann M, Bourquin JP, et al: Randomized trial compar-
          meric antigen receptor–modified T-cell therapy will soon be available   ing  liposomal  daunorubicin  with  idarubicin  in  induction  for  pediatric
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          bromodomain and extraterminal inhibitors, B-cell lymphoma 2 inhibi-  acute  myeloid  leukemia:  results  from  Study  AML-BFM  2004.  Blood
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