Flat Ductal Epithelial Atypia of the Breast
NCI Definition: A breast lesion characterized by the presence of dilated terminal ductal lobular units in which the epithelial lining has been replaced by a single layer of mildly atypical cells, or there is atypical, monotonous epithelial hyperplasia of three to five layers. This lesion relates to columnar cell change with atypia and columnar cell hyperplasia with atypia. 
There is 1 clinical trial for flat ductal epithelial atypia of the breast, of which 1 is open and 0 are completed or closed. Of the trial that contains flat ductal epithelial atypia of the breast as an inclusion criterion, 1 is no phase specified (1 open).
2. The AACR Project GENIE Consortium. AACR Project GENIE: powering precision medicine through an international consortium. Cancer Discovery. 2017;7(8):818-831. Dataset Version 6. This dataset does not represent the totality of the genetic landscape; see paper for more information.