Received: 29 October 2019
Accepted: 22 April 2020
First Online: 6 May 2020
Ethics approval and consent to participate
: The patient provided a written informed consent and this study was approved by the University of Tsukuba Hospital Ethics Committee (protocol no. H30–329).
: Written consent for publication of clinical data and results of the whole exome analysis was obtained from the patient.
: Authors declare that they have no competing interests.