Proteomic profiling shown more accurate than traditional biomarkers in identifying li...(- by SELDI-TOF mass spectrometry the in...),Health

Date:1/14/2008

- by SELDI-TOF mass spectrometry, the investigators were able to identify an 11-protein signature that accurately discriminated between the cirrhosis and cancer patients, first in a training set (made up of 26 cirrhosis and 20 liver cancer patients), and then again in an independent validation set (consisting of 25 cirrhosis and 19 liver cancer patients). The resulting diagnostic value 74 percent sensitivity and 88 percent specificity compared favorably with the diagnostic accuracy of AFP (73 percent sensitivity and 71 percent specificity) as well as with two other biomarkers currently in clinical development for liver cancer, AFP-L3 and PIVKA-IL.

Most strikingly, notes Libermann, in patients with small tumors (less than 2 cm), where AFP identified only three, and AFP-L3 and PIVKA-II only one each, the 11-protein signature correctly identified seven of eight patients at this early stage of disease.

Biomarkers play a major role in all aspects of personalized medicine, not only in early disease detection, but also in outcome prediction and evaluation of therapeutic responses, he adds. This study provides strong evidence that serum contains early detection biomarkers and supports the notion that a combination of multiple biomarkers may prove more effective than individual biomarkers for diagnosis of liver cancer, as well as other cancers.

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Contact: Bonnie Prescott bprescot@bidmc.harvard.edu 617-667-7306 Beth Israel Deaconess Medical Center Source:Eurekalert

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