The UNI-AJA project is a French epidemiological study analyzing cancer care pathways and outcomes in adolescents and young adults (AYAs, 15–29 years) from 2009 to 2022. Using data from 10 health institutions and national databases, it will examine treatment types, delays, second cancers, long-term effects, and causes of death. The study will employ deterministic linkage for comprehensive patient tracking. It will assess care evolution, the impact of AYA-specific structures, and treatment consequences. Findings will support improved cancer management and policy decisions in France. This project may lay the foundation for a national clinico-epidemiological database for AYAs with cancer.
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