Breakthrough Biomarkers in Lung Cancer: Pioneering Early Detection and Precision Treatment Strategies.

Abstract

There are several biological, genetic, and environmental variables that contribute to lung cancer, which is one of the main causes of cancer-related death globally. In addition to exposure to radon gas, air pollution, and occupational dangers like asbestos, smoking is a major risk factor because it releases carcinogens like nitrosamines and polycyclic aromatic hydrocarbons (PAHs) into the lungs. The risk of developing lung cancer is also influenced by genetic predispositions, such as variations in genes like EGFR, KRAS, and TP53. Additionally, new research emphasises how epigenetic changes, such as DNA methylation and histone acetylation, affect the expression of genes connected to the development of cancer. In determining risk and spotting early indicators of lung cancer, biomarkers have become important instruments. Cell-free DNA (cfDNA), circulating tumour cells (CTCs), and certain microRNAs (miRNAs) in blood are non-invasive biomarkers that indicate tumour heterogeneity and load. Molecular indicators include anaplastic lymphoma kinase (ALK) rearrangements, epidermal growth factor receptor (EGFR) mutations, and programmed death-ligand 1 (PD-L1) expression have proved very important in tailoring the therapy of lung cancer. Inflammatory indicators such as interleukins and C-reactive protein (CRP) are also linked to the prognosis of lung cancer. Finding and confirming these biomarkers is essential for improving early detection, tracking the course of the disease, and directing focused treatments. As research progresses, combining molecular, genetic, and environmental insights might improve lung cancer care, prevention, and early diagnosis, thereby lowering the disease's worldwide burden.