This phase of life bears a high risk for detrimental outcome in young adults with T1D. Structured transition programs with case management are therefore needed to improve the transition process and outcomes.

Insulin pumps and glucose sensors are effective in improving diabetes therapy and reducing acute complications. The combination of both devices using an algorithm‐driven interoperable controller makes automated insulin delivery (AID) systems possible. Many AID systems have been tested in clinical trials and have proven safety and effectiveness. However, currently, none of these systems are available for routine use in children younger than 6 years in Europe. For continued use, both users and prescribers must have sound knowledge of the features of the individual AID systems. Presently, all systems require various user interactions (e.g. meal announcements) because fully automated systems are not yet developed. Open‐source systems are non‐regulated variants to circumvent existing regulatory conditions. There are risks here for both users and prescribers. To evaluate AID therapy, the metric data of the glucose sensors, ‘time in target range’ and ‘glucose management index’, are novel recognized and suitable parameters allowing a consultation based on real glucose and insulin pump download data from the daily life of people with diabetes. Read out via cloud‐based software or automatic download of such individual treatment data provides the ideal technical basis for shared decision‐making through telemedicine, which must be further evaluated for general use.

The transition of patients with type 1 diabetes from pediatric to adult care services is challenging not only for patients but also for pediatricians and the further care providing physician. Around the time of transition, metabolic control is often unstable. Furthermore, psychiatric comorbidities or social background should be considered. Follow-up by a specialist, i.e. adults' endocrinologist/diabetologist, should be guaranteed. Typical differences between pediatric and adult health care services may hamper a successful transition. The handing-over of health care should be planned early and the timing should be adapted to the medical and psychosocial condition of the patient. An interdisciplinary transfer clinic seems the optimal setting for a successful transition. Close cooperation between pediatricians and adults' diabetologists is a prerequisite.

Background: To provide estimates of the nationwide prevalence of type 1 diabetes (T1D) and type 2 diabetes (T2D) in individuals younger than 20 years of age in Germany from 2002 to 2020 and to identify trends. Methods: Data were obtained from the electronic health record "Diabetes Prospective Follow-up Registry (DPV)" specific to diabetes care. Prevalence was estimated based on prevalent cases at the end of each year for the years 2002, 2008, 2014, and 2020 per 100 000 persons assuming a Poisson distribution and directly age-and/or sex-standardized to the population in 2020. Individuals younger than 20 years of age with a clinical diagnosis of T1D or 10-19-year-olds with T2D were eligible for inclusion in the study. Results:The standardized T1D prevalence per 100 000 persons was 138.9 (95% CI: 137.1; 140.6) in 2002 and 245.6 (243.1; 248.0) in 2020. The standardized T2D prevalence per 100 000 persons was 3.4 (3.1; 3.8) in 2002 and 10.8 (10.1; 11.5) in 2020. The annual percent change (APC) in prevalence declined Joachim Rosenbauer and Reinhard W. Holl shared senior authorship and both contributed equally to this study.