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Title

Acquired and reversible Pelger-Huët anomaly of polymorphonuclear neutrophils in three transplant patients receiving mycophenolate mofetil therapy

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Published in American Journal of Hematology. 2003, vol. 73, no. 4, p. 244-8
Abstract Deficient nuclear segmentation and abnormal chromatin condensation define Pelger-Huët anomaly of polymorphonuclear neutrophils. Next to the hereditary irreversible form, acquired forms both reversible and irreversible have been described. We describe three transplant patients who were all investigated for a left shift in the absence of symptoms or signs of infection and in whom acquired reversible Pelger-Huët anomaly was discovered. The abnormal PMN phenotype was induced by mycophenolate mofetil (MMF). MMF is a necessary but not sufficient condition for the development of the anomaly. In our three patients a dose-response effect was observed regarding plasma MMF concentration and severity of neutrophil dysplasia. Except for one slightly elevated value, the patients' plasma MMF levels were within the therapeutic range. None of the patients, one who was neutropenic at presentation and two who were non-neutropenic, developed infectious complications. From our three cases as well as those of other authors, we identify previous graft rejection episodes as a potential predisposing factor for the development of PHA. In the first patient, drug withdrawal led to normalization of PMN morphology. In the other two patients, the left shift disappeared after dose reduction. In these latter two patients, a form of desensitization to the effect of MMF on neutro- phils was observed following re-augmentation of MMF dose.
Keywords AgedAnti-Inflammatory Agents, Non-Steroidal/adverse effects/therapeutic useDose-Response Relationship, DrugFemaleGraft RejectionHumansMaleMiddle AgedMycophenolic Acid/adverse effects/analogs & derivatives/therapeutic useNeutrophils/pathologyOrgan Transplantation/adverse effectsPelger-Huet Anomaly/chemically inducedPhenotypeRisk Factors
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PMID: 12879427
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Research group Hépatologie chirurgicale (327)
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ASMIS, Lars et al. Acquired and reversible Pelger-Huët anomaly of polymorphonuclear neutrophils in three transplant patients receiving mycophenolate mofetil therapy. In: American Journal of Hematology, 2003, vol. 73, n° 4, p. 244-8. doi: 10.1002/ajh.10359 https://archive-ouverte.unige.ch/unige:37175

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Deposited on : 2014-06-04

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