The Clinical Trials Landscape

When first launched in 2000, there were 1,255 registered studies. By the end of 2018, there were 293,372 in the website’s repository1. This trend isn’t going away anytime soon; since 2015, there has been an average of 28,000 new studies per year. This growth has created an interesting clinical trials landscape throughout the cities of the United States.

For the first time ever, TrialJourneyTM, a powerful and dynamic platform that aims to help patients find, choose, and rate their clinical trial experiences, has transformed the national clinical trial database into a user-friendly interface. The formulation of TrialJourney has also revealed trends related to clinical research that span the entire nation.

"TrialJourney's proprietary transformation of the dataset allows us to deliver powerful and meaningful insights into the realities of clinical research across the United States," Dr. Irfan Khan, CEO of Circuit Clinical said. "The first step to improving access to clinical research as a care option is to understand the lay of the land - this project of open information sharing is designed to help move us all forward."

The Clinical Trials Landscape by City

City of Tampa, Florida

Tampa, FL

Wednesday May 22, 2019

City of Phoenix, Arizona

Phoenix, AZ

Wednesday May 29, 2019

City of San Diego, California

San Diego, CA

Wednesday June 5, 2019


Raleigh, NC

Wednesday June 12, 2019

City of Columbus, Ohio

Columbus, OH

Wednesday June 19, 2019

City of St. Louis, Missouri

St. Louis, MO

Wednesday June 26, 2019

City of Dallas, Texas

Dallas, TX

Wednesday July 3, 2019

City of Atlanta, Georgia

Atlanta, GA

Wednesday July 10, 2019

City of Minneapolis, Minnesota

Minneapolis, MN

Wednesday July 17, 2019


Houston, TX

Friday March 11, 2022


Washington, D.C.

Friday March 11, 2022


Detroit, MI

Friday March 11, 2022


San Jose, CA

Friday March 11, 2022


Miami, FL

Friday March 11, 2022

Denver, CO

Friday March 11, 2022


Seattle, WA

Friday March 11, 2022


Philadelphia, PA

Wednesday March 23, 2022


Boston, MA

Wednesday March 23, 2022


New York, NY

Wednesday March 23, 2022

  1. Approximate attributable data as per the TrialJourney database collapse as of 4/11/2019. All data is derived from
  2. Lyons Public Relations Broadcast PR Solutions. (2017). 2017 Nielsen DMA rankings – Full list. Retrieved from
  3. U.S Census Bureau. (2018) New Census Bureau population estimates show Dallas-Fort Worth-Arlington has the largest growth in the United States. Retrieved from
  4. U.S. Census Bureau, Population Division. (2019). Annual estimates of the resident population: April 1, 2010 to July 1, 2018 – United States – Combined statistical area; and for Puerto Rico. Retrieved from