The Most Experience + The Largest Network = A Winning Combination

A History of Unparalleled Expertise

Spanning the largest network of Central Sites & Institutions of any Central IRB, WCG IRB has reviewed over 62,000 studies across nearly every therapeutic area in over 300,000 sites across North America over the past 20 years. In addition, we’ve amassed contractual partnerships with over 3,300 institutions. Our breadth of experience ensures something that no other IRB provider can offer: we know how to work with your sites, and they know how to work with us. By tapping into our partnerships, you gain unmatched expertise, one-of-a-kind insights, and a confident path to ensuring on-time study reviews. That’s why 93% of all FDA-approved clinical therapies involve WCG!

The Largest Site Network Available:


Sites contracted in North America since 1998


Sites contracted in North America since 2021


Central Sites


institutional Sites

WCG IRB Has the Most Experience

62K+ Studies

  • (20%) Phase I
  • (39%) Phase II
  • (34%) Phase III
  • (7%) Phase IV

6K+ Studies

  • (28%) Phase I
  • (40%) Phase II
  • (26%) Phase III
  • (5%) Phase IV

Our Comprehensive Site Experience Provides:

  1. Protocol consultations with WCG IRB’s bench of ethical and regulatory experts
  2. Cataloged site sops and templates enabling streamlined processes
  3. Single POC who knows your studies and manages your workflow
  4. Fully IBC registered sites with concurrent IRB & IBC protocol reviews
  5. Elimination of local IRB review with 3-5 day site approval times

The Benefits of Our Expertise:


reduction in IRB submission times with WCG IRB Connexus


shorter time to full enrollment with a centralized review process


patients gained access to clinical trials

Site performance data

complimentary to each site