Retrospective genetic testing (Traceback) in women with early-onset breast cancer after revised national guidelines : a clinical implementation study
Purpose: This study focused on identifying a hereditary predisposition in women previously diagnosed with early-onset breast cancer through a retrospective outreach activity (Traceback). The objectives were to evaluate the possible clinical implementation of a simplified Traceback strategy and to identify carriers of pathogenic variants among previously untested women. Methods: Three hundred and f