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Capturing cancer: A powerful new technique for early diagnosis
Date:7/14/2014

es were used in the training phase and the remaining 25 percent subjected to blind test.

Remarkably, an average diagnostic accuracy of over 98 percent was achieved, demonstrating the suitability of immunosignaturing for the simultaneous classification of multiple diseases.

Specifically, in one experimental trial, researchers were able to detect and distinguish a complex, heterogeneous diseasestage IV breast cancer, relative to 4 other cancers and healthy controls. In the second trial, 14 separate diseases were distinguished from one another as well as from healthy controls, through immunosignatures. Among the cancers tested were 3 different stages of breast cancer, 4 different brain cancers, 2 pancreatic diseases, ovarian cancer and 2 different blood cancers.

The study emphasizes the fact that incidence of cancer constitutes an unprecedented global challenge to healthcare infrastructure, particularly in the face aging populations. Early detection and treatment of cancer must be given highest priority in order to adequately address projected increases in cancer cases.

Immunoisignatures provide an attractive means of capturing disease complexity, offering a marked improvement in detection over traditional methods in which one-to-one molecular recognition events are measured and only one or a small number of analytes can be evaluated.

In addition to the problem of dilution of measurable analytes in conventional tests, the authors stress the considerable heterogeneity of cancer, which results in complexity at the molecular level that tends to evade characterization when only a few target analytes are evaluated.

The microarray chip used for the current study contains 10,000 imprinted peptides, of random sequence, which serve the role of artificial disease antigens used to poll the antibodies present in blood. The fact that the random sequence peptides are structurally unrelated to natural antigens allows the arr
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Contact: Joseph Caspermeyer
Joseph.Caspermeyer@asu.edu
Arizona State University
Source:Eurekalert  

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