This site is intended for healthcare professionals. If you are a patient or caregiver, please contact your physician to discuss clinical trial eligibility.

Contact Us

For more information about our clinical development programs email

For assistance finding a RET or BTK clinical trial center for eligible patients, please contact us through the following channels:

For RET Trials:
Loxo Oncology RET Physician and Patient Clinical Trial Hotline: +1-855-RET-4292 or

For BTK Trials:
Loxo Oncology BTK Physician and Patient Clinical Trial Hotline: +1-855-LOXO-305 or

For information on TRK trials, please visit

Loxo Oncology at Lilly

Stamford, CT
281 Tresser Blvd, 9th Floor
Stamford, CT 06901

Boulder, CO
3122 Sterling Circle, Suite 200
Boulder, CO 80301

South San Francisco, CA
701 Gateway Blvd, Suite 420
South San Francisco, CA 94080

New York, NY
Alexandria Center for Life Science
450 E 29th St
New York, NY 10016

Indianapolis, IN
Lilly Corporate Center
Indianapolis, IN 46285