Examples of well-known TAAs include alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA), prostate-specific antigen (PSA), and several heat shock proteins (HSPs), all of which have demonstrated clinical relevance across a spectrum of malignancies such as liver, colorectal, gastric, prostate, and lung cancers [8,9]. Here, CEACAM5 is linked to lung cancer.