Fig. 4From: Phase 2 study of buparlisib (BKM120), a pan-class I PI3K inhibitor, in patients with metastatic triple-negative breast cancerUnsupervised clustering based on the delta values of the paired samples. Heatmap depicting the delta values in the paired samples of the PI3K signature-related proteins ordered from upstream (top) to downstream (bottom). Protein levels are indicated on a low-to-high scale (green-black-red)Back to article page