Clinical Studies

Clinical Studies

Please contact us if you are interested in learning more about our ongoing clinical studies.

For a comprehensive list of studies, please check

Tabelecleucel (tab‐cel®)

Phase Trial Number Trial Description
3 NCT03394365 Tabelecleucel for Solid Organ Transplant (SOT) subjects after failure of rituximab or rituximab and chemotherapy, and in Hematopoietic Cell Transplant (HCT) subjects after failure of rituximab (ALLELE)
2 NCT04554914 A Study to Evaluate Tabelecleucel in Participants With Epstein-Barr Virus-associated Diseases


Phase Trial Number Trial Description
2 NCT03283826 Phase 2 Study to Evaluate the Safety of ATA188 in Subjects With Progressive Multiple Sclerosis (EMBOLD)

Requests for Expanded Access

This Policy for Requests for Expanded Access to Investigational Drugs describes the principles and procedures that Atara Biotherapeutics will follow when considering requests by licensed physicians for use of Atara’s investigational drugs outside of clinical trials.


For more information on enrollment in our current clinical trials, please contact us or visit for location information.
The safety and efficacy of the investigational use of these products have not been determined. There is no guarantee that the investigational use listed will be filed with and/or approved for marketing by a regulatory agency.