Figure 2
From: Lifetime risks of specific breast cancer subtypes among women in four racial/ethnic groups
Distribution of breast cancer subtypes by age. Distribution is expressed as a percentage, and age is expressed in years. Subtypes are defined as (a) luminal (ER- or PR-positive or both and HER2-negative), (b) HER2-positive (ER- and PR-positive or -negative and HER2-positive), and (c) triple-negative (ER-negative, PR-negative, and HER2-negative). ER, estrogen receptor; HER2, Her2/neu; PR, progesterone receptor.