This is a multicenter, open label, pilot phase II study of the PI3K inhibitor copanlisib in
combination with a ketogenic diet in the treatment of patients with one of the following
malignancies: (a) relapsed or refractory (R/R) follicular lymphoma (FL), (b) R/R endometrial
cancer (EC) with a documented activating mutation in PIK3CA or loss of phosphatase and tensin
homolog (PTEN).