As the investigators recently reported ketogenic diet can suppress hyperinsulinemia associated with PI3K inhibitors, leading to potentiation of the anti-tumor effects of PI3K inhibitors. Copanlisib potently inhibits PI3Kα and PI3Kδ. It has been approved for the treatment of relapsed follicular lymphoma, based on ORR of 59% (84 of 142 patients). The CR rate in FL was 14%, and the median progression-free survival was 11.2 months. Copanlisib demonstrated encouraging clinical activity in marginal zone lymphoma (ORR 70% including 9% CR). While these results are clinically meaningful, FL and MZL inevitably develop resistance to copanlisib with time, even in those patients who initially respond to the therapy. Novel strategies to improve the efficacy of copanlisib in FL and MZL, by improving CR and PFS, may transform how to manage these incurable malignancies.
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).