ACKNOWLEDGEMENTS
The germline analysis was performed in a pilot study of pediatric cancer predisposition syndrome conducted by the Japan Children’s Cancer Group. The authors thank Dr. Munetoshi Hinata and Mrs. Masayo Matsumura for their technical assistance. This work was partially supported by The Japan Agency for Medical Research and Development under grant numbers JP23ck0106876, JP23ck0106870, and JP23ama221505. This study was also partly supported by a Gold Ribon Network research grant.