Recent work confirms a bench-to-bedside approach that circulating tumor DNA is associated with outcome and objective response to chemotherapy in patients with advanced leiomyosarcoma. Liquid biopsies may be used for risk stratification in future trials guiding treatment decisions by identifying patients who are likely to benefit from chemotherapy. See related article by Madanat-Harjuoja et al., p. 2579.
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There has been a rapid expansion of immunotherapy options for non-small cell lung cancer (NSCLC) over the past two decades, particularly with the advent of immune checkpoint inhibitors. Despite the emerging role of immunotherapy in adjuvant and neoadjuvant settings though, relatively few patients will respond to immunotherapy which can be problematic due to expense and toxicity; thus, the development of biomarkers capable of predicting immunotherapeutic response is imperative. Due to the promise of a noninvasive, personalized approach capable of providing comprehensive, real-time monitoring of tumor heterogeneity and evolution, there has been wide interest in the concept of using circulating tumor DNA (ctDNA) to predict treatment response.
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