The goal of this observational study is to establish a registry, screening, and individualized management platform for patients with monogenic diabetes mellitus(MDM) using internet-based and mobile application software. The main questions it aims to answer are:
* What are the genetic mutations causing MDM in China (genetic landscape)?
* How effective and safe is the individualized, molecular-diagnosis-based management platform for MDM in improving patient outcomes?
Participants will:
* Register in the MDM platform via mobile app or internet-based software
* Undergo genetic screening for MDM diagnosis
* Participate in follow-up visits for individualized management and monitoring of blood glucose control and outcomes