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QIAGEN and Max Planck Institute for Infection Biology Collaborate to Develop Assay for Active TB Risk in Individuals With Latent Infection

QIAGEN N.V. and the Max Planck Institute for Infection Biology (MPIIB), Department of Immunology have announced a new collaboration to develop a molecular diagnostic test to assess the risk of an individual with latent tuberculosis (TB) developing active TB disease during their lifetime. Financial terms were not disclosed.

Approximately one-third of the world's population is estimated to be infected with Mycobacterium tuberculosis, but do not have active tuberculosis. The identification and treatment of these individuals is critical to controlling this disease since approximately 5-10% of latent TB patients are at risk for developing active TB during their lifetime, particularly those with weakened immune systems. As a follow-up to those who test positive for latent TB, this new test will be designed to enable early treatment before reactivation of the TB disease, when it becomes contagious and causes life-threatening respiratory illnesses and other diseases.

This new molecular reflex assay, which is based on significant research conducted at the MPIIB in Berlin, is expected to be a PCR-based test targeting multiple biomarkers. It will be designed to run on the QIAsymphony modular automation platform and to serve as a reflex test following QIAGEN's QuantiFERON-TB Gold test, the modern gold standard for detection of latent TB. The kits are not expected to be available before 2013 and will be commercialized by QIAGEN.

During TB infection, changes occur in the transcriptional profiles of immune cells circulating through blood - alterations in gene expression that reflect the body's immune response and help to distinguish between latent and active disease. The goal of QIAGEN's collaboration with the MPIIB is to format the most suitable markers from the sets of biomarkers identified by the institute into a molecular assay that can predict susceptibility or resistance to active TB disease in individuals with latent TB.

"We are excited to collaborate with the MPIIB to jointly create an innovative and advanced prevention tool against the global TB threat," said Dr. James Rothel, Vice President, Head of Scientific Affairs, at QIAGEN. "These assays are highly complementary to our QuantiFERON technology. We believe that the combination of 'pre-molecular' and DNA-/RNA-based molecular testing technologies is the next-generation solution for screening and identifying infected individuals before they develop active TB disease. This initiative has the potential to reduce the spread of infectious diseases significantly and also to generate cost savings by treating individuals before development of active TB. The collaboration with the MPIIB underpins QIAGEN's strategy to further expand its portfolio with new innovative assay technologies for profiling diseases to make improvements in life possible."

In the developed world, current screening protocols for TB typically identify individuals with positive test results (commonly up to 20% of high-risk patients screened) who need to be evaluated for active TB. A test combining TB infection markers with risk markers for the progression of latent into active TB could significantly increase the effectiveness of treatment options and disease control efforts. The market for latent TB testing is assumed to be approximately 50 million tests per year in the developed world.

"While the highest morbidity and mortality rates from TB disease occur in developing countries, global travel and immigration render TB a problem for the whole world," said Professor Stefan H.E. Kaufmann, Director of the Department of Immunology at the MPIIB in Berlin. "We believe QIAGEN, as a leader in infectious disease testing, is the right choice to help us reach new scientific achievements and jointly improve previously inadequate preventive, diagnostic and therapeutic tools for TB. Through this collaboration we will gain access to important technologies and concomitantly strengthen the further development of our vaccine program."

The Department of Immunology at the MPIIB is performing pioneering research on infectious diseases that threaten global health. One major project includes development of a vaccine against TB in combination with the definition of biomarkers to reliably distinguish between latent and active TB. "Results from this research may accelerate clinical trials of TB vaccines. Identification of biomarkers that can predict risk of active TB disease in individuals with latent TB will also be able to predict protective efficacy of a vaccine candidate early in clinical trial", explains Prof. Stefan H.E. Kaufmann.

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