P063: Prospective longitudinal validation of a breast cancer risk prediction model in a cohort of 130,058 individuals* - Brent Mabey; Elisha Hughes; Braden Probst; Holly Pederson; Timothy Simmons; Brian Morris; Brooke Hullinger; Susan Domchek; Charis Eng; Monique Gary; Jennifer Klemp; Semanti Mukherjee; et al. (Genetics in Medicine Open, 2023)