KRT19 and colorectal carcinoma: The selected targets were HSP70, CK19, CA125, and TAG72, have all been described as potential exosome-associated markers in earlier studies [44,45,46,47].For instance, Xiao et al. demonstrated that CK19, TAG72, and CA125 are differentially expressed in exosomes from CRC cells depending on metastatic potential and drug resistance profiles [16].