Johnnie José Orozco, MD, PhD

faculty member

Johnnie José Orozco, MD, PhD

Associate Professor
Translational Science and Therapeutics Division, Fred Hutch

Fax: 206.667.1854
Mail Stop: D3-190

Dr. Johnnie José Orozco is a practicing oncologist who studies novel ways to make the transplantation of blood-forming stem cells safer and more effective. His research tests radioimmunotherapies that use immune system proteins known as antibodies to selectively target radioactivity to cancer cells, sparing normal tissues. The antibody and its radioactive payload locate and kill tumor cells by damaging their DNA.

Dr. Orozco’s research is primarily focused on partially matched transplantation, in which the recipient and the donor do not share all of the genetic markers that are used for tissue matching. This is of particular importance to racial and ethnic minorities who need transplants but cannot find a fully matched donor from transplant registries, in which donors are predominately non-Hispanic whites. His goal is to extend the benefits of transplantation to more people by making it safer for patients whose only option may be a partial match.

Other Appointments & Affiliations

Associate Professor, Division of Hematology and Oncology
University of Washington School of Medicine

Attending Physician
Fred Hutchinson Cancer Center


Research Associate, Clinical Research Division, Fred Hutch; 2013-2015

Fellowship, Hematology / Oncology Program, University of Washington; 2009-2012

Internal Medicine Residency, University of California, San Francisco; 2006-2009

MD, Medical Scientist Training Program, University of Washington School of Medicine; 2006

PhD, Bioengineering, University of Washington; 2004

BS, Chemical Engineering, University of California, Los Angeles; 1995

Current Projects

In ongoing studies, Dr. Orozco is working to identify the ideal alpha radionuclide to be used in radioimmunotherapies that can reduce relapse risks after transplantation, including transplants in which haploidentical (half-matched) family members serve as donors. Using a murine leukemia model, he is testing 90Y, 211At and 131I bound antibodies that recognize a molecule called CD45 that is found on most blood cells, including leukemia cells. He is working to identify optimal chemotherapy combinations and radiation doses as well as the ideal radionuclide that produce the best stem cell engraftment and survival with the lowest toxicities.

Find an Active Clinical Trial Led by Dr. Orozco

For the Media

The Media Relations team at Fred Hutch is available to assist members of the news media who would like to arrange interviews with faculty.

Email or call 206.667.2210