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LETTER TO JMG |
1 Department of Clinical Genetics, Groningen University Hospital, Groningen, Netherlands
2 Department of Medical Genetics, St Georges Hospital Medical School, London, United Kingdom
3 Regional Pathology Laboratory, Enschede, Netherlands
4 Department of Paediatrics, Emma Childrens Hospital, Academic Medical Centre, Amsterdam, Netherlands
5 Department of Radiology, Great Ormond Street Hospital for Children, London, United Kingdom
Correspondence to:
Dr J C Oosterwijk
Department of Clinical Genetics, University Hospital Groningen, P.O. Box 30.001, NL-9700RB, Groningen, Netherlands; j.c.oosterwijk@medgen.azg.nl]
Keywords: Greenberg/HEM skeletal dysplasia; Pelger-Huët homozygosity
Abbreviations: HEM, hydrops, ectopic calcifications, moth-eaten; LBR, lamin B receptor gene; PHA, Pelger-Huët anomaly
| The first 150 words of the full text of this article appear below. |
In 1928 the Dutch physician Pelger described two patients with a morphological abnormality of leukocytes that consisted of hypolobulation of the nuclei: there were two lobes instead of the usual five or more and the chromatin structure was coarse and denser.1 This was subsequently shown to be a genetic trait by paediatrician Huët.2 In the following years many families with Pelger-Huët anomaly (PHA) from different countries were reported and autosomal dominant inheritance was firmly established.3 Bilobulated PHA nuclei ("spectacle" or "pince-nez" cells) can also be a transient symptom in the presence of underlying disease (for example, infection, myeloid leukaemia or medication) as part of a "shift to the left" (pseudo PHA), but constitutional PHA is a constant, genetic, and harmless nucleomorphic variant.3 The frequency of PHA ranges from 0.010.1%, with documented clustering in the region of Gelenau, Germany, where 1% of the population has PHA.4
Homozygosity for PHA was first
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