Drug-drug interactions between palbociclib and proton pump inhibitors in early breast cancer: an exploratory analysis of PALLAS (ABCSG-42/AFT-05/BIG-14-13/PrE0109).

Agostinetto E, Pfeiler G, Hlauschek D, Mayer EL, Lambertini M, de Azambuja E, Bellet-Ezquerra M, Meisel JL, Rubovszky G, Zdenkowski N, Novik Y, Ruiz-Borrego M, Gelmon KA, Mamounas EP, Iwata H, Lu DR, Soelkner L, Fesl C, Gnant M, DeMichele A