Case Report: A case of Tatton-Brown–Rahman syndrome featuring mitral annular disjunction and mitral valve prolapse due to a novel mutation site in the DNMT3A gene - Xu, Zhong-jiao; Shen, Ru-ming; Hu, Wu-ming; Lv, Lin-chun; Shi, Zhen-hua; Lin, Li (Frontiers in Cardiovascular Medicine, 2025)