Abstract PS5-05-26: Analyzing Age-Related Patterns of Second Primary Cancer Sites Following a Primary Breast Cancer Diagnosis

Abstract Objective: This study aims to evaluate age-related patterns pertaining to the anatomical sites of second primary cancers occurring within five years of an initial breast cancer diagnosis. Methods: Our analysis focuses on patients (n=68,109) whose first recorded cancer diagnosis was early-stage breast cancer, diagnosed between 2008 and 2019. Age, diagnosis dates, and all anatomical cancer sites of these 68,109 patients were extracted from the Q-Centrix Clinical Data Warehouse. The Q-Centrix Clinical Data Warehouse is a proprietary database of de-identified clinical data produced through expert-driven human abstraction. The subset sourced from the Clinical Data Warehouse includes information from 78 hospitals, health systems, and cancer centers across the country. Patients were split into 6 age groups: 40 years of age compared to those < 40 years of age. A p-value cutoff of 40 years of age compared to those