Dr. Anastasio is a clinical and laboratory geneticist at the Sherbrooke University hospital in Quebec, Canada. Following her Medical Genetics residency at McGill University, she pursued a fellowship in Laboratory Molecular Genetics in both Boston (The Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine) and Montreal (McGill University). She began practicing in 2021 and splits her time between clinical and laboratory work. Since October 2025, she is the chief of the Medical Genetics Service, Clinical and Laboratory sectors. She is also actively involved in teaching of medical students, residents and undergraduate students.