Neonatal Diabetes

This observational study aims to establish a digital registry, screening platform for patients with monogenic diabetes using internet-based and mobile application technologies. The primary objectives are to: Characterize the genetic landscape of monogenic diabetes in the Chinese population, including pathogenic variants and their distribution Participants will: * Enroll in the monogenic diabetes registry via mobile application or web-based platform * Undergo molecular genetic testing to establish a definitive diagnosis

The study has two aims: 1. To (1a) determine the frequency of monogenic diabetes misdiagnosed as type 1 diabetes (T1D) and (2) to define an algorithm for case selection. 2. To discover novel genes whose mutations cause monogenic diabetes misdiagnosed as T1D.