Characterization of Type 2 Diabetes Subgroups at Diagnosis: a Necessary Step Towards Precision Medicine in Diabetes.

A multicenter prospective observational study will be conducted. The study design contemplates a single visit that will coincide with the inclusion of the patient in the study. Prior to the inclusion visit, a pre-selection period is planned in which the possible candidate will be invited, all the study procedures will be explained and clarified, the selection criteria will be checked and the inclusion visit will be scheduled. The scope of the study is made up of Primary Care Centers (CAP) in 2 large health areas (Barcelona and Lleida). In the Annex 8 section, the characteristics and expected recruitment capacity of each CAP are detailed. We have taken a conservative approach using the lower range of incidence calculated based on our own data from 2019 to 2020. The table provided used an expected acceptance rate for participation of 80%. Additionally, CAPs were selected based on commitment and performance in our previous studies. It is planned to include 1200 participants newly diagnosed with T2DM. Depending on compliance with the recruitment rate, the inclusion of other CAPs is possible to achieve the expected number of participants in the study. Follow-up of participants and linkage with other databases For this study, a pragmatic follow-up of the participants will be chosen, which is adapted to the usual clinical practice for the follow-up of diabetes. For this reason, the monitoring will be done from: * SIDIAP/PADRIS databases, with the link to the electronic medical record of the participants who have accepted this option in the informed consent. * Electronic medical record, in the event that the link with the SIDIAP/PADRIS databases is not possible for technical reasons (non-ICS centers), the collection of monitoring variables will be done directly from the clinical course (review of clinical history) of participants without scheduling additional study follow-up visits. * For specific causes of mortality, data linkage with the National Institute of Statistics (INE) will be used. * If the participants have already participated or are participating in other clinical research studies and want to transfer the data they have provided for other projects to this study, this linking (portability) of the data will be allowed. All participants will be followed until the end of the study, death or withdrawal of informed consent.