Characteristics of Overall and Cause-Specific Survival Rates in Breast Cancer Patients under the Age of 40: A Population Based Study of 481,294 Cases in SEER Registry.

Background: Age at diagnosis has been shown to be an important prognostic factor of outcome for breast cancer (BCA). The specific aim of this study was to determine the overall survival (OS) and cause-specific survival (CSS) in young patients ( 69 (138,580, 28.8%) years old. A graph of OS and tables for OS and CSS from Kaplan-Meier analysis of the entire cohort (all stages) is shown below:Both OS and CSS of each stage group shared the same trends as in the analysis of the entire cohort.Conclusion: The OS of the 69 year age groups, but worse than the 409s and 509s age groups. The CSS of the youngest age group was significantly worse than all age groups except the >69 age group. Further studies to determine contributing variables for these observatios is warranted. Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 2048.