growth of resistant subpopulations, necessitating the development of next-generation
therapies to treat the evolving cancer. The PIK3CA–AKT–mTOR pathway is one of the most
commonly activated pathways in human cancers, which has led to the development of small-
molecule inhibitors that target various nodes in the pathway. Among these agents, first-
generation mTOR inhibitors (rapalogs) have caused responses in 'N-of-1'cases, and second …