Each year, 55 000 organ transplants are performed worldwide. Cumulatively, the number of living organ recipients is now estimated to be over 300 000. Most of these transplant recipients will remain on immunosuppressive drugs for the remainder of their lives to prevent rejection episodes. Controlled doses of these drugs are required to prevent over-medication, which may leave the @entity1 susceptible to @entity1292 and @entity137 effects, or under-dosing, which may lead to shortened graft survival because of rejection episodes. This paper describes the result of a multicenter study conducted at the Universities of Pittsburgh, Alabama and Maryland to evaluate an in vitro assay (CylexTM Immune Cell Function Assay) for the measurement of global immune response in transplant @entity1 receiving immunosuppressive therapy. The assay uses a whole blood sample to maintain the presence of the drug during incubation. Following overnight incubation of blood with phytohemagglutinin (PHA), @entity404 cells are selected using paramagnetic particles coated with a monoclonal antibody to the @entity404 epitope. The @entity404 -positive cells are targeted as major immunosuppressive drugs are designed to specifically inhibit T-cell activation which has been implicated in rejection. The data generated at these three sites were submitted in support of an Food and Drug Association (FDA) application for the use of this assay in the detection of cell-mediated immunity in an immunosuppressed population. The assay was cleared by the FDA on April 2, 2002. This cross-sectional study was designed to establish ranges for reactivity of this bioassay in the assessment of functional immunity for an individual solid organ recipient at any point in time.

Immune cell function testing: an adjunct to therapeutic drug monitoring in transplant XXXX management.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity1292 :: ('MESH:D009894', 'Disease') :: ['opportunistic infection'] @entity137 :: ('MESH:D064420', 'Disease') :: ['drug toxicity'] @entity404 :: ('920', 'Gene') :: ['CD4']
@entity1 :: (9606,Species) :: ['patient']
