The PROspera Kidney Transplant ACTIVE Rejection Assessment Registry (ProActive)

2019-09-23 04:51:49 | BioPortfolio


The ProActive registry is a longitudinal, multi-center study with a prospective arm observing clinical care for patients receiving physician ordered Prospera, an allograft rejection test, and a historical control arm collecting data on cases at the same sites whose kidney allograft rejection status was managed with Serum Creatinine SCr/estimated Glomerular Filtration Rate eGFR. This registry will compare patient management and outcomes in patients who receive Prospera (Prospera arm) to the outcomes of the historical control group (control arm) to determine Prospera's clinical utility. High-risk subjects defined as having a biopsy-demonstrated rejection event or at least one pre-existing Donor Specific Antibody DSA with total Mean Fluorescent Intensity MFI>3000 or a calculated Panel Reactive Antibodies cPRA>70% will be followed for an additional period up to 24 months in both the Prospera arm and historical control arm.


The primary objective is to differentiate the clinical utility of Prospera testing from the use of creatinine testing as measured by the proportion of positive biopsies in post renal allograft patients.

Secondary objectives include:

- To observe the performance of the Prospera assay in detecting AR (repeated validation)

- To evaluate whether Prospera can detect AR earlier and more often than SCr

- To determine whether use of Prospera will significant decrease the overall number of surveillance biopsies when compared to routine SCr surveillance

Study Design


Kidney Transplant Rejection




Not yet recruiting


Natera, Inc.

Results (where available)

View Results


Published on BioPortfolio: 2019-09-23T04:51:49-0400

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Medical and Biotech [MESH] Definitions

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An immune response with both cellular and humoral components, directed against an allogeneic transplant, whose tissue antigens are not compatible with those of the recipient.

Identification of the major histocompatibility antigens of transplant DONORS and potential recipients, usually by serological tests. Donor and recipient pairs should be of identical ABO blood group, and in addition should be matched as closely as possible for HISTOCOMPATIBILITY ANTIGENS in order to minimize the likelihood of allograft rejection. (King, Dictionary of Genetics, 4th ed)

A group of antigens that includes both the major and minor histocompatibility antigens. The former are genetically determined by the major histocompatibility complex. They determine tissue type for transplantation and cause allograft rejections. The latter are systems of allelic alloantigens that can cause weak transplant rejection.

Non-acceptance, negative attitudes, hostility or excessive criticism of the individual which may precipitate feelings of rejection.

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