Trend of clinical drug trials in type 2 diabetes mellitus over last decade.

Background: Type 2 diabetes mellitus (Type 2 DM) has been recognized as the recent pandemic; India and China competing each other for the title--"Diabetes Capital of the World." A number of new drugs have been recently available and has lead to a boom in the clinical drug trial industry. We intend to evaluate the trend of clinical drug trials in Type 2 DM over last one decade. Materials and Methods: Clinical drug trial registry of USA was used for getting the data regarding number of drug trials conducted in each country over last decade. India, China, and USA being the countries with highest prevalence of diabetes were included in the analysis. The percentage share of each country in clinical drug trials in Type 2 DM was compared with their percentage share in prevalence of Type 2 DM. Discussion: A significant growth in the drug trials in Type 2 DM was observed during 2005 to 2008, after which there has been a plateau. It was also recognized that India and China which contribute to around 30% of diabetic population of the world contributed in only 9.73% and 5.15% of drug trials in Type 2 DM during 2010, respectively. USA comprising of 15.15% of diabetic population of world was seen to have contributed in 38.36% of clinical drug trials in Type 2 DM. This raises a question of skewing in the data generated from various drug trials conducted in Type 2 DM. [ABSTRACT FROM AUTHOR]