Use of Molecular Tools to Identify Patients With Indolent Breast Cancers With Ultralow Risk Over 2 Decades.

Importance The frequency of cancers with indolent behavior has increased with screening. Better tools to identify indolent tumors are needed to avoid overtreatment. Objective To determine if a multigene classifier is associated with indolent behavior of invasive breast cancers in women followed for 2 decades. Design, Setting, and Participants This is a… (More)