Ribociclib,Palbociclib
novartis,pfizer
['biomarker']
harmonia trial as the only ongoing trial that directly compares palbo vs ribo (focusing a high biological risk population!). high priority / need for biomarkers! nice discussion by c isaacs 
Oncólogo Médico  Unidad Cáncer de Mama, Hospital 12 Octubre y HM Hospitales,  Madrid. Vicepresidente Grupo SOLTI de investigacion en cancer de mama