Funding for this research was provided by:
Japan Agency for Medical Research and Development (JP20fk0210072, JP20fk0210047)
Received: 18 January 2021
Accepted: 20 April 2021
First Online: 27 April 2021
: Not applicable.
: Written informed consent to publish this case report was obtained from the patient.
: Professor Naoya Sakamoto received research grants from Gilead Sciences Inc. and AbbVie Inc. Dr. Goki Suda received research grants from Bristol Myers Squibb and MSD K.K.