PMID- 32099697 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 2090-6560 (Print) IS - 2090-6579 (Electronic) IS - 2090-6579 (Linking) VI - 2020 DP - 2020 TI - Successful Treatment of Pediatric Refractory/Relapsed AML with KIR-Ligand-Mismatched Cord Blood Transplant after FLAG-IDA Reinduction Therapy with or without the GO Regimen. PG - 1378056 LID - 10.1155/2020/1378056 [doi] LID - 1378056 AB - Prognosis in pediatric patients with refractory/relapsed acute myeloid leukemia (AML) is grim, and there is no standard treatment for such patients. Combined treatment with intensive chemotherapy and gemtuzumab ozogamicin (GO), a monoclonal anti-CD33 antibody conjugated with calicheamicin, is useful as reinduction therapy in refractory/relapsed AML. Here, we describe three cases of pediatric refractory/relapsed AML that were successfully managed with FLAG-IDA (fludarabine, cytarabine, granulocyte colony-stimulating factor, and idarubicin), with or without GO, as reinduction therapy before a KIR-ligand-mismatched cord blood transplant. This strategy relies on the fact that killer cell immunoglobulin-like receptors (KIR) on cord blood natural killer (NK) cells recognize human leukocyte antigen (HLA) class I alleles, and that donor KIR-ligand incompatibility may be associated with lower incidence of relapse and improved survival in AML, as cells that lack these inhibitory HLA ligands can activate NK cells. All three patients are currently alive and have been disease-free for 24-65 months, although one patient developed severe sinusoidal obstructive syndrome (SOS). Thus, our strategy can result in excellent outcomes in pediatric patients with refractory/relapsed AML. CI - Copyright (c) 2020 Daisuke Toyama et al. FAU - Toyama, Daisuke AU - Toyama D AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. FAU - Matsuno, Ryosuke AU - Matsuno R AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. FAU - Sugishita, Yumiko AU - Sugishita Y AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. FAU - Kaneko, Ryota AU - Kaneko R AUID- ORCID: 0000-0001-8158-6338 AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. FAU - Okamoto, Naoko AU - Okamoto N AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. FAU - Koganesawa, Masaya AU - Koganesawa M AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. FAU - Fujita, Sachio AU - Fujita S AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. FAU - Akiyama, Kosuke AU - Akiyama K AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. FAU - Isoyama, Keiichi AU - Isoyama K AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. FAU - Yamamoto, Shohei AU - Yamamoto S AUID- ORCID: 0000-0003-1582-7062 AD - Department of Pediatrics, Showa University Fujigaoka Hospital, Yokohama, Japan. LA - eng PT - Case Reports DEP - 20200212 PL - United States TA - Case Rep Hematol JT - Case reports in hematology JID - 101576456 PMC - PMC7037524 COIS- The authors declare that they have no conflicts of interest. EDAT- 2020/02/27 06:00 MHDA- 2020/02/27 06:01 PMCR- 2020/02/12 CRDT- 2020/02/27 06:00 PHST- 2019/09/19 00:00 [received] PHST- 2020/01/11 00:00 [revised] PHST- 2020/01/25 00:00 [accepted] PHST- 2020/02/27 06:00 [entrez] PHST- 2020/02/27 06:00 [pubmed] PHST- 2020/02/27 06:01 [medline] PHST- 2020/02/12 00:00 [pmc-release] AID - 10.1155/2020/1378056 [doi] PST - epublish SO - Case Rep Hematol. 2020 Feb 12;2020:1378056. doi: 10.1155/2020/1378056. eCollection 2020.