On October 12 and 13, the 1st of November 1954 University Hospital in Oran hosted the 4th International Days of Medical Biochemistry and the 1st edition of the Biochemistry and Molecular Biology Research Lab symposium. The event brought together experts to discuss advancements in biological diagnosis and the treatment of chronic and rare diseases. Professor Naci Mourad, the event organizer, highlighted that the program included workshops on oncology and genetic disorders, while announcing plans for a new neonatal screening unit to detect congenital conditions early. Participants emphasized that next-generation sequencing technologies have significantly improved the ability to diagnose complex rare diseases and neurodevelopmental disorders, representing a major step forward for public health.