Using existing medications to treat severe rickettsial infections

Pre-clinical studies to repurpose FDA-approved adenosine A2A receptor antagonists for lethal rickettsial infection

['FUNDING_R01'] · UNIVERSITY OF TEXAS MED BR GALVESTON · NIH-11127262

This study is looking at whether a medication already approved for other uses can help boost the immune system to fight tough rickettsial infections, and it's aimed at finding better treatment options for people who get very sick from these infections.

Quick facts

Phase['FUNDING_R01']
Study typeNih_funding
SexAll
SponsorUNIVERSITY OF TEXAS MED BR GALVESTON (nih funded)
Locations1 site (GALVESTON, UNITED STATES)
Trial IDNIH-11127262 on ClinicalTrials.gov

What this research studies

This research investigates the potential of repurposing FDA-approved adenosine A2A receptor antagonists, specifically istradefylline, to treat lethal rickettsial infections. The study focuses on understanding how these medications can enhance the body's immune response against Rickettsia bacteria, which are difficult to diagnose and treat effectively. By conducting pre-clinical trials in mouse models, researchers aim to determine the optimal timing and combination of treatments to improve survival rates in severe cases. The goal is to develop a new therapeutic approach that could be quickly implemented in clinical settings.

Who could benefit from this research

Good fit: Ideal candidates for this research are individuals who are diagnosed with severe rickettsial infections or are at high risk due to environmental factors.

Not a fit: Patients with mild rickettsial infections or those who do not have access to the necessary medical facilities may not benefit from this research.

Why it matters

Potential benefit: If successful, this research could lead to more effective treatments for patients suffering from severe rickettsial infections, potentially reducing morbidity and mortality.

How similar studies have performed: Previous studies have shown promising results in using similar approaches to repurpose existing medications for treating bacterial infections, indicating potential for success in this research.

Where this research is happening

GALVESTON, UNITED STATES

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.

View on NIH RePORTER →

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.