Liquid Biopsy's Role in Head and Neck Tumors: Changing Paradigms in the Era of Precision Medicine

In the era of precision medicine, liquid biopsy has become an indispensable tool in research and clinical diagnostics. This innovative molecular approach offers significant benefits in managing cancers, such as melanoma, colorectal cancer, lung cancer, and, now, head and neck tumors. By addressing the challenges posed by tumor heterogeneity, liquid biopsy aligns seamlessly with precision medicine strategies, providing more accessible methods to detect and monitor genetic alterations in tumors. While biomarkers for head and neck tumors have been identified, integrating these markers into diagnostic workflows remains a challenge due to the complexities of current sampling techniques. Could liquid biopsy pave the way for a breakthrough in the diagnosis, monitoring, and treatment of patients with head and neck cancer? This review explores the expanding role of liquid biopsy in oncology, with a focus on its potential to revolutionize the management of head and neck malignancies. Liquid biopsy has become an integral part of diagnosis, classification, and prognostication of numerous cancers, namely, head and neck tumors. Liquid biopsy should work in concert with histological testing, imaging, surgery, and other diagnostic and therapeutic approaches, as each offers distinct advantages that together contribute to achieving the best possible patient outcomes.