Abstract
Immunosuppression management in post-transplant malignancy is challenging because of a lack of objective immunologic assessment tools. The ImmuKnow assay measures the ATP level from CD4 T cells, quantifying cell-mediated immunity and providing an insight into the immune status of transplant recipients. Its potential use in patients with post-transplant de novo malignancy was evaluated. Thirteen adult transplant patients with de novo malignancy were divided into survivors (n = 9) and non-survivors (n = 4) after malignancy treatment. Tacrolimus and the ImmuKnow levels were monitored before, during, and after malignancy treatment. The ImmuKnow level in non-survivors group was significantly lower before and after malignancy treatment compared to survivors group (p = 0.013 and 0.0014 respectively). In survivor group, the ImmuKnow level was significantly decreased during malignancy treatment (p = 0.019) but recovered to the initial level after the treatment. However, in non-survivor group, the ImmuKnow level remained suppressed throughout the observed period despite a reduction in immunosuppressive drug levels. The ImmuKnow assay can be an objective means evaluating immune status of patients with de novo malignancy. The ImmuKnow assa...Continue Reading
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