🫁 What if lung cancer metastases are not just destinations, but active sources of further spread? A new Nature study from TRACERx–PEACE offers one of the most detailed evolutionary maps of NSCLC metastasis to date. Using 501 longitudinally collected primary and metastatic tumor samples from 24 patients, researchers reconstructed how lung cancer spread from diagnosis to death, and the findings challenge the simple “primary tumor → metastasis” model. Key signals: 🧬 62.5% of patients had multiple primary tumor subclones that seeded distinct metastases 🔁 60% of sampled metastases were seeded by other metastases ⏳ Metastases present for longer were more likely to seed further disease 📍 Most metastatic migrations stayed within the same anatomical cavity ⚠️ Subclones that escaped the thorax were enriched for chromosomal instability The message is clear: metastatic NSCLC is not static. It is spatially organized, genetically diverse, and continuously evolving. This study does not immediately change clinical practice, but it gives a powerful biological rationale for better relapse monitoring, deeper metastatic profiling, and carefully selected local treatment strategies. oncodaily.com/oncolibrary/lu… @SonyaHessey @AMIHuebner @HaaseKerstin @KristianaGrigo4 @wingkinliu @ojlucas @FVasilopoulou @ProfSiowMingLee @DionysisPastos @MatthewGKrebs @LeQuesneLab @dean_fennell @crispinhiley @ZaccaSimo @NickyMcGranahan @CharlesSwanton #LungCancer #NSCLC #TRACERx #PEACEStudy #Metastasis #CancerEvolution #TumorHeterogeneity #ChromosomalInstability #PrecisionOncology #ThoracicOncology #OncoDaily #OncoDailyLung