PMID- 35635686 OWN - NLM STAT- MEDLINE DCOM- 20220929 LR - 20230321 IS - 1865-3774 (Electronic) IS - 0925-5710 (Linking) VI - 116 IP - 4 DP - 2022 Oct TI - A phase I study of inotuzumab ozogamicin as a single agent in pediatric patients in Japan with relapsed/refractory CD22-positive acute lymphoblastic leukemia (INO-Ped-ALL-1). PG - 612-621 LID - 10.1007/s12185-022-03388-8 [doi] AB - Inotuzumab ozogamicin (InO) is a CD22-directed antibody conjugated with calicheamicin approved for adult relapsed or refractory CD22-positive acute lymphoblastic leukemia (ALL). This phase 1 study primarily aimed to determine the pediatric recommended doses of InO through the standard 3 + 3 design, and to evaluate the safety, tolerability, pharmacokinetic (PK) profile, immunogenicity and efficacy of InO. Dose level 1 (DL1) was 1.8 mg/m(2) (days 1, 8, and 15: 0.8, 0.5, and 0.5 mg/m(2), respectively). Six of the seven registered patients were eligible [median age, 7.5 (2-17) years]. Although all six patients started DL1, only five completed the dose. No dose-limiting toxicity was observed. All patients experienced adverse events (AEs), including increased alanine aminotransferase and aspartate aminotransferase in four patients. Three patients experienced serious AEs, which were hepatic veno-occlusive disease (VOD), ALL, and fever. Five patients achieved complete remission (CR) or CR with incomplete blood cell recovery (CRi), among whom 3 (60%) were negative for minimal residual disease. PK findings were similar to those in adults. No patient had anti-drug antibodies to InO. In conclusion, InO was well tolerated in children and promoted similar antileukemic efficacy as in adults. Nonetheless, the risk for VOD requires attention. CI - (c) 2022. Japanese Society of Hematology. FAU - Nakayama, Hideki AU - Nakayama H AUID- ORCID: 0000-0002-1994-113X AD - Department of Pediatrics, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan. hnkym415@gmail.com. FAU - Ogawa, Chitose AU - Ogawa C AD - Department of Pediatric Oncology, National Cancer Center Hospital, Tokyo, Japan. FAU - Sekimizu, Masahiro AU - Sekimizu M AD - Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan. AD - Department of Pediatrics, National Hospital Organization Nagoya Medical Center, Nagoya, Japan. FAU - Fujisaki, Hiroyuki AU - Fujisaki H AD - Department of Pediatric Hematology/Oncology, Osaka City General Hospital, Osaka, Japan. FAU - Kosaka, Yoshiyuki AU - Kosaka Y AD - Department of Hematology and Oncology, Hyogo Prefectural Kobe Children's Hospital, Kobe, Japan. FAU - Hashimoto, Hiroya AU - Hashimoto H AD - Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan. AD - Core Laboratory, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Japan. FAU - Saito, Akiko M AU - Saito AM AD - Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan. FAU - Horibe, Keizo AU - Horibe K AD - Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan. AD - Department of Pediatrics, National Hospital Organization Nagoya Medical Center, Nagoya, Japan. LA - eng PT - Clinical Trial, Phase I PT - Journal Article DEP - 20220530 PL - Japan TA - Int J Hematol JT - International journal of hematology JID - 9111627 RN - 0 (CD22 protein, human) RN - 0 (Calicheamicins) RN - 0 (Sialic Acid Binding Ig-like Lectin 2) RN - EC 2.6.1.1 (Aspartate Aminotransferases) RN - EC 2.6.1.2 (Alanine Transaminase) RN - P93RUU11P7 (Inotuzumab Ozogamicin) SB - IM EIN - Int J Hematol. 2023 May;117(5):786. PMID: 36943610 MH - Adolescent MH - Alanine Transaminase MH - Aspartate Aminotransferases MH - *Calicheamicins MH - Child MH - Child, Preschool MH - Humans MH - Inotuzumab Ozogamicin MH - Japan MH - *Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy MH - Sialic Acid Binding Ig-like Lectin 2/therapeutic use OTO - NOTNLM OT - Acute lymphoblastic leukemia OT - CD22 OT - Children OT - Inotuzumab ozogamicin OT - Relapse/refractory EDAT- 2022/06/01 06:00 MHDA- 2022/09/30 06:00 CRDT- 2022/05/31 12:45 PHST- 2022/02/14 00:00 [received] PHST- 2022/05/10 00:00 [accepted] PHST- 2022/05/09 00:00 [revised] PHST- 2022/06/01 06:00 [pubmed] PHST- 2022/09/30 06:00 [medline] PHST- 2022/05/31 12:45 [entrez] AID - 10.1007/s12185-022-03388-8 [pii] AID - 10.1007/s12185-022-03388-8 [doi] PST - ppublish SO - Int J Hematol. 2022 Oct;116(4):612-621. doi: 10.1007/s12185-022-03388-8. Epub 2022 May 30.