Context-dependent synthetic lethality — an emerging precision therapeutic approach

A comprehensive review published in Nature Reviews Cancer by Chang et al. presents a framework for understanding context-dependent synthetic lethality, where specific genetic backgrounds in tumors create exploitable vulnerabilities. The authors evaluate how various genetic contexts produce cancer-intrinsic weaknesses that can be targeted therapeutically. The framework specifically considers therapeutic index to help translate synthetic lethality concepts into more selective and durable cancer treatments. This work aims to advance precision oncology by identifying patient subgroups most likely to benefit from synthetic lethality-based therapies.