The expansion more than doubles the size of the nationwide network.

NIDA has added eight new regional research centers and their community treatment partners to its National Drug Abuse Treatment Clinical Trials Network (CTN). The expansion more than doubles the size of the nationwide network that NIDA established to conduct multisite trials of promising drug abuse treatments.

The eight new regional centers join the first five centers, which launched the CTN last September, and a sixth center, which was added this February. The 14 regional research and training centers in the newly expanded CTN are linked to more than 85 community treatment programs. Over the next few years, NIDA anticipates adding more research nodes until the CTN reaches a total of 30 to 40 research centers with community treatment affiliates in every area of the country. The 14 current regional research centers and their principal investigators are listed below.