Gentic is a computerized system for the storage, recall, and analysis of data collected by the Medical Genetics Center in Marseille, France. It is based on a standard case report file that includes a full clinical description of all patients, results of cytogenetic investigations, and details of the genetic counseling provided. GENTIC has been used since 1975, and data on more than 5,000 families are accessible for study. This system has improved the quality of consultations, follow-up, and research. It provides data for epidemiological studies and for syndrome identification. This system is maintained at an annual cost of $3,000, salary costs not included, after an initial investment of $40,000.