The study is part of the MACROLIVER Project, whose main objective is to create a digital tool for patients and caregivers for the management of liver disease that allows the optimization of therapy and/or the treatment process, even remotely. Such a tool not only reduces the movement of patients who are by definition fragile, but also enables the optimization of access and care by a multidisciplinary team. This tool is intended to support doctors and patients, but in no way replaces normal clinical practice. This study aims to explore the specificities of patients experiencing the transition from the pediatric ward to the adult ward in order to identify risk and protective factors that influence psychological well-being at both an individual and relational level. In order to gather all the information about the patients attending the transitional clinic and to obtain a more complete and truthful clinical-psychological picture, the study also includes the collection of retrospective data of the transplanted patients.

Inclusion Criteria:

• patients between the ages of 14 and 20 who have been transplanted at the ASST-PG23 transplant center or are awaiting a liver transplant and belong to the transition to adult services
• signed informed consent
• proven use of the APPs (to be assessed based on the last 2 weeks)

Exclusion Criteria:

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Patients between the ages of 14 and 20 who have been transplanted at the ASST-PG23 transplant center or are awaiting a liver transplant and belong to the transition to adult services.