Telome Health, Inc. (THI), developer of the TeloTest™ diagnostic test that measures average telomere length, announces the planned launch of the saliva-based TeloTest in the first quarter of 2013. Related telomere tests, including percentage of short telomeres, would follow.
Telome Health's TeloTest™ will be the first saliva-based telomere test available on the market. THI leverages the predictive power of data related to telomeres, the protective caps at the ends of chromosomes, to help assess health status, disease and mortality risk, and response to specific therapies.
The utility of testing telomere length in a saliva-based test was recently reported from an independent, large clinical study sponsored jointly by Kaiser Permanente, University of California, San Francisco (UCSF), and National Institutes of Health, in which the average telomere length of 100,000 Kaiser patients was measured and analyzed relative to other health domains and clinical outcomes. (http://www.nlm.nih.gov/medlineplus/news/fullstory_131143.html).
In the Kaiser-UCSF study, subjects' medical records were analyzed to confirm health status over a 2-year period prior to telomere testing. This study provides an analytical foundation for the prognostic power of the TeloTest. The study showed that individuals who had short telomeres had increased risk of death in the three-year follow up period, and that smoking, heavy alcohol consumption, lower education, and poor environments were associated with short telomeres, while moderate exercise was associated with longer telomeres. The mortality risk data remained statistically significant even after accounting for lifestyle factors. These and other observations are consistent with earlier studies on blood cell telomere length.
"We knew that telomere length from cells in saliva correlated relatively well with that in blood cells, but it was important to see that key clinical associations were also preserved," stated THI's chief scientific officer, Calvin Harley, Ph.D.
The UCSF team that conducted telomere measurements was led by Dr. Elizabeth Blackburn, 2009 Nobel Laureate in Physiology and Medicine. The technology used was qPCR, an extremely well-established technology used in a very broad range of molecular diagnostic testing, including telomere length. THI licensed the exclusive, world-wide rights to qPCR-based telomere testing from the University of Utah in 2010.