PMID- 36258088 OWN - NLM STAT- MEDLINE DCOM- 20230119 LR - 20230125 IS - 1865-3774 (Electronic) IS - 0925-5710 (Print) IS - 0925-5710 (Linking) VI - 117 IP - 1 DP - 2023 Jan TI - Phase I dose-escalation study of milademetan in patients with relapsed or refractory acute myeloid leukemia. PG - 68-77 LID - 10.1007/s12185-022-03464-z [doi] AB - Long-term survival in patients with acute myeloid leukemia (AML) remains low, and current treatment modalities are inadequate. Milademetan (DS-3032, RAIN-32), a small-molecule specific murine double minute 2 inhibitor, has shown a p53 status-dependent antitumor effect in vitro studies. This is the first phase I study report of milademetan monotherapy in relapsed/refractory (R/R) AML patients evaluating the safety, tolerability, pharmacokinetics, and preliminary tumor response for further clinical development. Fourteen patients received 90 (starting dose, n = 4), 120 (n = 6), or 160 mg (n = 4) of oral milademetan once daily in a 14/28 treatment cycle. The median total treatment duration was 1.5 cycles. Dose-limiting toxicity did not occur, and the maximum tolerated dose was not reached. Thus, the recommended dose was defined as 160 mg. The most common adverse events (AEs) were decreased appetite (64.3%), febrile neutropenia (50%), nausea (42.9%), and anemia (35.7%). No deaths or AEs leading to treatment discontinuation occurred. Five serious treatment-emergent AEs occurred in 4 patients. Plasma concentration increased linearly with milademetan dose. However, trends in the safety and efficacy of oral milademetan in patients with R/R AML warrant further clinical investigation. This study can inform future milademetan studies in hematologic malignancies. CI - (c) 2022. The Author(s). FAU - Sekiguchi, Naohiro AU - Sekiguchi N AD - National Hospital Organization Disaster Medical Center, Tokyo, Japan. FAU - Kasahara, Senji AU - Kasahara S AD - Gifu Municipal Hospital, Gifu, Japan. FAU - Miyamoto, Toshihiro AU - Miyamoto T AD - Kyushu University Hospital, Fukuoka, Japan. FAU - Kiguchi, Toru AU - Kiguchi T AD - Dokkyo Medical University Saitama Medical Center, Saitama, Japan. AD - Chugoku Central Hospital, Hiroshima, Japan. FAU - Ohno, Hitoshi AU - Ohno H AD - Tenri Hospital, Nara, Japan. FAU - Takagi, Taiga AU - Takagi T AD - Daiichi Sankyo Co., Ltd, Tokyo, Japan. FAU - Tachibana, Masaya AU - Tachibana M AD - Daiichi Sankyo Co., Ltd, Tokyo, Japan. FAU - Sumi, Hiroyuki AU - Sumi H AD - Daiichi Sankyo Co., Ltd, Tokyo, Japan. FAU - Kakurai, Yasuyuki AU - Kakurai Y AD - Daiichi Sankyo Co., Ltd, Tokyo, Japan. FAU - Yamashita, Tomonari AU - Yamashita T AD - Daiichi Sankyo Co., Ltd, Tokyo, Japan. FAU - Usuki, Kensuke AU - Usuki K AUID- ORCID: 0000-0002-1216-4470 AD - Department of Hematology, NTT Medical Center Tokyo, 5‑9‑22 Higashi‑Gotanda, Shinagawa‑ku, Tokyo, 141‑8625, Japan. kensuke.usuki@gmail.com. LA - eng PT - Clinical Trial, Phase I PT - Journal Article DEP - 20221019 PL - Japan TA - Int J Hematol JT - International journal of hematology JID - 9111627 RN - R3I80TLN7S (milademetan) SB - IM MH - Animals MH - Humans MH - *Leukemia, Myeloid, Acute/drug therapy PMC - PMC9813109 OTO - NOTNLM OT - Acute myeloid leukemia OT - MDM2 protein OT - Milademetan OT - Phase-1 clinical trial OT - Tumor suppressor protein p53 COIS- Naohiro Sekiguchi received research funds from Ono, A2 Healthcare, Astellas, Janssen, MSD, Otsuka, Pfizer, PPD-SNBL, Sumimoto Dainippon, Daiichi Sankyo, and Bristol Myers Squibb. Senji Kasahara received research funds from Daiichi Sankyo. Toshihiro Miyamoto received research funds from Daiichi Sankyo and speaker fees from Bristol Myers Squibb, Otsuka, MSD, Astellas, Astellas Amgen, Celgene, AbbVie, and Takeda. Toru Kiguchi received speaker fees from Bristol Myers Squibb and Novartis, as well as research funds from Bristol Myers Squibb, Daiichi Sankyo, Otsuka, MSD, Takeda, Astella, Nippon Shinyaku, Novartis, Sumimoto Dainippon, Janssen, SymBio, Celgene, and Sanofi. Hitoshi Ohno received research funds from Daiichi Sankyo. Taiga Takagi, Masaya Tachibana, Hiroyuki Sumi, Yasuyuki Kakurai, and Tomonari Yamashita are employees of Daiichi Sankyo. Kensuke Usuki received speaker fees from Novartis as well as research funds from Astellas, Alexion, AbbVie, Gilead, SymBio, Daiichi Sankyo, Sumimoto Dainippon, Chugai, Otsuka, Novartis, Bristol Myers Squibb, Takeda, Astellas Amgen, Apellis, and Nippon Shinyaku. EDAT- 2022/10/19 06:00 MHDA- 2023/01/07 06:00 PMCR- 2022/10/19 CRDT- 2022/10/18 23:30 PHST- 2022/05/27 00:00 [received] PHST- 2022/09/30 00:00 [accepted] PHST- 2022/09/30 00:00 [revised] PHST- 2022/10/19 06:00 [pubmed] PHST- 2023/01/07 06:00 [medline] PHST- 2022/10/18 23:30 [entrez] PHST- 2022/10/19 00:00 [pmc-release] AID - 10.1007/s12185-022-03464-z [pii] AID - 3464 [pii] AID - 10.1007/s12185-022-03464-z [doi] PST - ppublish SO - Int J Hematol. 2023 Jan;117(1):68-77. doi: 10.1007/s12185-022-03464-z. Epub 2022 Oct 19.