PI3Kα x PIK3CA H1047X x PIK3CA E545K x PIK3CA E542K

This study is testing a new medicine, SNV4818, for people with advanced cancers. The researchers want to find out if SNV4818 is safe, well-tolerated, and effective in treating solid tumors. They are investigating different doses in order to find the safest and most effective one.

This is a Phase 1, first-in-human, open-label study designed to evaluate the maximum tolerated dose (MTD), recommended phase 2 dose (RP2D), safety, tolerability, pharmacokinetics, pharmacodynamics, and preliminary anti-tumor activity of RLY-5836 in advanced solid tumors in participants harboring a PIK3CA mutation in blood and/or tumor per local assessment. The study consists of 2 parts, a dose escalation (Part 1) and a dose expansion (Part 2).