Central Biorepository Spotlight: Organ Transplants

Immune Precision in Solid Organ Transplantation (ImPrec)

The Immune Precision in Solid Organ Transplantation (ImPrec) has an active study in the Central Biorepository, a unit of the UMMS Office of Research that facilitates discovery and improves healthcare outcomes by providing high-quality, highly annotated biospecimens donated for basic, clinical and translational research.

The unit receives biospecimens and data from U-M contributors and collaborators across a spectrum of medical research. Samples from Michigan Medicine patients are securely linked to MiChart data through the Research Data Warehouse

Types of Biospecimens

  • Blood
  • Cultured primary cells
  • DNA
  • Plasma
  • Peripheral blood mononucleocytes
  • Urine, supernatant and pellet
  • RNA PAXgene tubes


Currently enrolling new solid organ transplant recipients at U-M, in addition to already transplanted patients for specific case-controlled studies.

ImPrec scatterplot

Clinical data also available through secure links to Electronic Health Records (EHR).



The Central Biorepository enables access to Immune Precision in Solid Organ Transplantation (ImPrec) from Michigan Medicine patients and offers secure linkage to laboratory and clinical data offered by the Data Office.

Get started:


Fei Wen Headshot

"While daunting to many, the ImPrec team fully embraces patient differences all the way down to the single-cell level. This unique approach is enabled for large cohorts by CBR and will reveal unprecedented rich molecular and cellular information to accelerate biomedical innovation for improved patient care." - Fei Wen, Ph.D., Associate Professor of Chemical Engineering


Immune Precision in Solid Organ Transplantation (ImPrec)

The goal of ImPrec is to identify novel risk stratifying instruments so that we can personalize immune suppression for solid organ transplant recipients. Currently, we use a “one size fits all” approach for immune suppression for recipients of solid organ transplants, which leads to over immune suppression (with increased risk of cancer and infections) or under immune suppression, with the increased risk of organ rejection. (Immune suppression is required to prevent rejection of transplanted organs). Identification of novel risk stratifiers will minimize the risk of generalized immune suppression and increase the efficacy of solid organ transplantation.

Learn more: Contact Sherri Wood at sychan@umich.edu or (734) 936-1173


View the full study sheet



Contact us at CBR.Requests@umich.edu or (734) 647-8809 

Hours of Operation: 7:30 am - 4:30 pm, M-F 

North Campus Research Complex, Building 60-1661, 2800 Plymouth Road, Ann Arbor, MI 48109

A list of Central Biorepository contacts is available in the Personnel Directory