A new drug-Pictilisib can block the growth of cancer cells, this research was published on the Clinical Cancer Research.

PI3K pathway plays the key role in helping cancer cell growth, spreading to other parts of the body, maintaining the survival of cancer cell. Sixty patients with solid tumors received pictilisib at 14 dose levels from 15 to 450 mg once-daily, initially on days 1 to 21 every 28 days and later, using continuous dosing for selected dose levels. Pharmacodynamic studies incorporated 18F-FDG-PET, and assessment of phosphorylated AKT and S6 ribosomal protein in platelet-rich plasma (PRP) and tumor tissue.

This experiment confirmed that the pictilisib was safely administered with a dose-proportional pharmacokinetic profile, on-target pharmacodynamic activity at dose levels ≥100 mg and signs of antitumor activity. The recommended phase II dose was continuous dosing at 330 mg once-daily.

Reference:

Sarker D, Ang JE, et al. First-in-Human Phase I Study of Pictilisib (GDC-0941), a Potent Pan-Class I Phosphatidylinositol-3-Kinase (PI3K) Inhibitor, in Patients with Advanced Solid Tumors. [J].Clin Cancer Res, 2015 Jan 1;21(1):77-86.