New Publication: CTTI Presents a Systematic Review of Respiratory Tract Infection Trials Available on ClinicalTrials.gov

Posted on by Lorri Bingham

Annals of the American Thoracic Society published Respiratory Tract Infection Clinical Trials, 2007-2012: A Systematic Review of ClinicalTrials.gov on September 11, 2015. CTTI, in collaboration with the FDA, analyzed data from respiratory tract infection (RTI) trials registered between 2007 and 2012 on ClinicalTrials.gov to identify gaps in antibacterial research and inform possible interventions to the public health crisis of increasing antimicrobial resistance. Of the 69,779 trials registered between 2007 and 2012, 1,377 (2%) of these were RTI trials, which were found to be more likely than other infectious-disease or non-infectious-disease trials to be funded by industry. However, stratification of RTI trials by registration year revealed that industry funding is decreasing from approximately 65% of RTIs in 2007-2008 to 46% in 2011-2012. RTI trials more frequently evaluated vaccines compared to infectious-disease trials overall. Lower respiratory tract infection (LRTI) trials were mainly focused on bacterial pathogens (78.5%) and the majority of LRTI trials registered between 2007 and 2012 were treatment-focused; however, a multivariable logistic regression analysis indicated that a treatment-focused RTI trial was associated with decreased odds of publication. Despite the increasing emergence of multidrug-resistant microbes, currently FDA-approved antimicrobials were more commonly tested in RTI trials, and the number of trials investigating novel antimicrobial agents was low. Throughout the study period, the number of LRTI trials overall and prevention-oriented LTRI trials did not increase. This was partly attributed to a decrease in industry sponsorship and funding. These findings should prompt an examination of resource allocation in infectious-diseases trials and LRTI trials in particular.

“Our study is the first to characterize the spectrum of RTI trials. This is a critically important topic, as LRTIs are the most common cause of communicable-disease-related deaths worldwide and in the United States (28% and 45%, respectively) but comprise only 3% of infectious-disease trials.”
– Ruopp, et al.

Figure 2

Analyzed from data on ClinicalTrials.gov, Figure 2 displays the declining financial support from industry for RTI trials.

 

To read the publication, click here.