mRNA as a non-invasively recoverable analyte for early detection of cancer has many advantages over current methods.
• detection of mRNA in the blood allows for detection of gene products (i.e. polypeptides) that are not usually secreted by the cell such, as nuclear factors, enzymes, glypicans, etc.
• These are proteins associated with HCC, but are not secreted, and hence not found in the circulation.
• Elevation of specific mRNA may be used to guide therapy.
• mRNA is amplifiable by PCR making it possible to detect the presence of polypeptides in low abundance (by detecting its mRNA, not DNA, which is only present in a single copy per cell and possibly outperforming ELISA).