[Reviewing my career as a hematologist-oncologist and a quality control specialist in clinical trials].

After a long-term hospitalization following a ski accident in college, I decided to choose a specialty in hematology and oncology. In graduate school, after learning the basics of biostatistics and the methodology of clinical trials, I had the opportunity to go through a series of clinical trial tasks, from launching to writing a clinical study report, which led to the study drug approval. This has greatly motivated me to be actively involved in this field. At the Dana-Farber Cancer Institute, I studied outcomes research under a supervisor, and at a time of difficulty, my good role model, Dr. Stephanie Lee, had urged me, saying, "That which does not kill you makes you stronger." Subsequently, I devoted myself to the establishment of a data center for a Japanese pediatric leukemia/lymphoma study group, currently a subcommittee of the Japan Children's Cancer Group, and to develop an academic research organization for conducting ICH-GCP-compliant international clinical trials, including the originally developed EDC system. I was struggling in balancing work and parenting. Fortunately, I was supported by my encounters with respectable people.