CJCP     2025 27 (3):  340-346    ISSN: 1008-8830  CN: 43-1301/R Two cases of creatine deficiency syndrome caused by GAMT gene mutations and literature review ZHAO Ting-Ting, PAN Zou, ZHONG Jian-Min, TANG Hai-Yun, YIN Fei, PENG Jing, CHEN Chen Children's Medical Center, Xiangya Hospital, Central South University, Changsha 410008, China Received: 2024-11-12  Revised: null  Online: null Supporting info