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Article History

Received: 2 November 2019

Accepted: 4 May 2020

First Online: 18 May 2020

Compliance with ethical standards

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: MS reports personal fees from Celgene, Bristol-Myers Squibb, Takeda Pharmaceutical, and Eisai Pharmaceuticals, outside the submitted work. TM reports personal fees from Chugai Pharmaceutical, Eisai Pharmaceuticals, Novartis Pharma, and Astellas Pharma, outside the submitted work. HT reports grants and personal fees from Celgene, Bristol-Myers Squibb, and Ono Pharmaceutical; grants from CSL Behring and SRL; and personal fees from Bristol-Myers Squibb, Janssen Pharmaceutical, Sanofi, Takeda Pharmaceutical, Fujimoto Pharmaceutical and Becton, and Dickinson and Company, outside the submitted work. TI reports grants from Astellas Pharma, Chugai Pharmaceutical, CSL Behring, Eisai Pharmaceuticals, FUJIFILM, Wako Chemicals, Kyowa Kirin, Ono Pharmaceutical, Pfizer, Nippon Shinyaku, MSD, Otsuka Pharmaceutical, Repertoire Genesis, Sumitomo Dainippon Pharma, Taiho Pharmaceutical, Takara Bio Inc., Takeda Pharmaceutical, and Zenyaku Kogyo, and personal fees from Bristol-Myers Squibb, Celgene, Janssen Pharmaceutical, and Kyowa Kirin, outside the submitted work. RS reports personal fees from Otsuka Pharmaceutical, Sawai Pharmaceutical, Celgene, Sumitomo Dainippon Pharma, Eisai Pharmaceuticals, Alexion Pharmaceuticals, Sanofi, Gilead Sciences, AbbVie, Mundipharma, Jazz Pharmaceuticals, Ono Pharmaceutical, and Janssen Pharmaceutical, outside the submitted work.

: This study was approved by the data management committee of the Japanese Society for Hematopoietic Cell Transplantation and the Ethics Committee of Keio University School of Medicine (Tokyo, Japan). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

: The TRUMP database includes physician-reviewed data. Observational studies base on the TRUMP database are performed with an informed consent.