Fig. 1
From: Frequency of breast cancer subtypes among African American women in the AMBER consortium
Frequency of immunohistochemistry (IHC)-based subtypes within prediction analysis of microarray 50 (PAM50)-based subtype categories. Black pie slices represent the percentage of each PAM50-based subtype correctly identified using IHC-based definitions, while colored slices represent IHC-based subtypes of misclassified cases. HR, hormone receptor; ER, estrogen receptor; HER2, human epidermal growth factor receptor 2