PRA International We are a global Clinical Research Organization providing services through all phases of clinical development. We specialize in oncology, CNS, respiratory/allergy, cardiovascular and infectious diseases. Our company has supported over 2,100 clinical trials in more than 80 countries on 6 continents through our global offices. PRA's therapeutic expertise, global reach, and project experience with local knowledge enable our project teams to deliver consistent and on time performance for our clients.