Lung cancer is a global public health concern with the highest morbidity and mortality
among all cancers. Biomarkers can be used for early lung cancer detection, prognostication and
optimal treatment. Research on biomarkers will enable more effective therapy for each individual patient. Great progress
has been made in biomarker discovery with more understanding involved in lung cancer. Lung cancer biomarkers can be
classified into Proteins, DNAs, Epigenomics, and RNAs according to their biochemical properties. Here, we will discuss
the most common biomarkers for lung cancer.