Full informed consent was obtained from the patient in this report for the treatment. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Written informed consent to publish was obtained from the patient.
Conflit of interest
Dr. YM received lecture fees from Bristol Myers Squibb and Takeda Pharmaceutical Co.Ltd. Dr. MK received lecture fees from Bristol Myers Squibb and lecture fees and scholarship donations from Takeda Pharmaceutical Co., Ltd. The other authors (Drs. KE, KY) declared that they had no relevant financial relationships to disclose.