Increase in Anti-Gal IgM Level is Associated With Early Graft Failure in Intraportal Porcine Islet Xenotransplantation
2015
Results: The frequency of EGF was significantly lower in Group II (26.3%) than in Group I (100%, P =0.0012) and Group III (77.8%, P =0.0166). While levels of anti-Gal IgG in Group I and anti-Gal IgM in Group III increased on day 7 compared with day 0 (P =0.0156 and 0.0273), there was no increase in either on day 7 in Group II. The ratio of anti-Gal IgM or IgG level on day 7 to that on day 0 (Ratio7/0) was significantly higher in recipients with EGF than without EGF (P =0.0009 and 0.0027). ROC curve analysis of anti-Gal IgM Ratio7/0 revealed an area under the curve of 0.789 (P =0.0003). Conclusions: IS with anti-CD154 suppressed anti-Gal responses and prevented EGF in PITx. Anti-Gal IgM Ratio7/0, being associated with EGF, is a predictive marker for EGF.
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