Andrew Johnson

Assistant Professor


Dr. Johnson is a clinical and anatomic pathologist with expertise in transfusion medicine, blood banking, and apheresis. He is medical director of the Apheresis Donor Center, which provides peripheral hematopoietic progenitor cell collection, therapeutic plasma exchange, photopheresis therapy, and other therapeutic apheresis services.Dr. Johnson recently collaborated with a colleague in radiology in the area of prostate cancer research, specifically correlating MRI, histopathological patterns and biomarkers with disease aggressiveness and progression. Investigators are homing in on which imaging, histological, and genetic profiles provide the most predictive information in prostate cancer. His current research interests are in extracorporeal photophoresis (ECP), an FDA-approved form of apheresis plus a photoactive compound, often psoralen, that is used to treat advanced cutaneous T-cell lymphoma. ECP has also shown benefits in treating graft-versus-host disease in post-transplant patients. Dr. Johnson has been designated as a research site investigator for a national survey study exploring the use of ECP in lung transplant rejection. One of the goals of the study is to learn what ECP protocol variations are being used by different lung transplant centers and what might constitute a best practices approach for using ECP as a backup treatment for chronic lung rejection in these patients.

Research Summary


Ipe TS, Raval JS, Fernando LP, Gokhale A, Jacquot C, Johnson, AD, Kim HC, Monis GF, Mo YD, Mrgan SM, Pagano MB, Pham HP, Sanford K, Schmidt AE, Schwartz J, Waldman A, Webb J, Winters JL, Wu Y, Yamada C, Wong ECC. Therapeutic plasma exchange for neuromyelitis opica spectrum disorder: A multicenter retrospective study by the ASFA neurologic diseases subcommittee. J Clinical Apheresis. 2019 Nov. doi: 10.1002/jca.21754.

Sackett K, Cohn CS, Fahey-Ahrndt K, Smith AR, Johnson AD.  Successful treatment of pure red cell aplasia because of ABO major mismatched stem cell transplant.  J Clin Apher. 2017 May 24. doi: 10.1002/jca.21553. [Epub ahead of print] PMID:28543448

Johnson AD, Cohn CS. Xenotropic Murine Leukemia Virus-Related Virus (XMRV) and the Safety of the Blood Supply . Clin Microbiol Rev. 2016 Oct;29(4):749-57. doi: 10.1128/CMR.00086-15. Review. PMID: 27358491



MD, University of Minnesota Medical School, 2010

Fellowships, Residencies, and Visiting Engagements

University of Minnesota (Lab Med and Pathology), 2014-2015,
Post-Sophomore Fellowship in Pathology, University of Minnesota, 2008,
University of Minnesota (Lab Med and Pathology), 2010-2014,

Licensures and Certifications

Diplomat of the American Board of Pathology, Anatomic and Clinical Pathology, July 2014,



420 Delaware St SE

Minneapolis, MN 55455-0341