Extracellular vesicles (EVs) have emerged as pivotal components in cancer research, particularly in the context of monitoring tumor dynamics and therapeutic responses. Recent studies have highlighted the potential of circulating tumor-derived EVs for genomic and transcriptomic profiling, as demonstrated by Casanova-Salas et al., who showed that EV-DNA and EV-RNA from metastatic prostate cancer patients reflect tumor evolution and correlate with clinical outcomes during treatment with androgen receptor signaling inhibitors and taxanes (ref: Casanova-Salas doi.org/10.1016/j.ccell.2024.06.003/). Ciani further expanded on this by analyzing cfDNA and EV transcriptomics, emphasizing the non-invasive nature of liquid biopsies in tracking tumor adaptation (ref: Ciani doi.org/10.1016/j.ccell.2024.06.007/). In pancreatic cancer, Zheng and Yao explored the role of cancer-associated fibroblasts (CAFs) in promoting perineural invasion and immune evasion through EV-packaged molecules, respectively, underscoring the multifaceted roles of EVs in tumor microenvironments (ref: Zheng doi.org/10.1126/scitranslmed.adi0178/; ref: Yao doi.org/10.1002/jev2.12484/). Additionally, Yamamoto's investigation into serine metabolism revealed a universal mechanism of EV secretion across various cancers, linking metabolic pathways to cancer progression (ref: Yamamoto doi.org/10.1016/j.celrep.2024.114517/). Overall, these studies collectively illustrate the potential of EVs as biomarkers and therapeutic targets in cancer management, while also highlighting the need for further exploration of their biological roles and mechanisms of action.