Yoshimi, Ayami and Kamachi, Yoshiro and Imai, Kosuke and Watanabe, Nobuhiro and Nakadate, Hisaya and Kanazawa, Takashi and Ozono, Shuichi and Kobayashi, Ryoji and Yoshida, Misa and Kobayashi, Chie and Hama, Asahito and Muramatsu, Hideki and Sasahara, Yoji and Jakob, Marcus and Morio, Tomohiro and Ehl, Stephan and Manabe, Atsushi and Niemeyer, Charlotte and Kojima, Seiji (2013) WiskottAldrich syndrome presenting with a clinical picture mimicking juvenile myelomonocytic leukaemia. PEDIATRIC BLOOD & CANCER, 60 (5). pp. 836-841. ISSN 1545-5009,
Full text not available from this repository. (Request a copy)Abstract
Background WiskottAldrich syndrome (WAS) is a rare X-linked immunodeficiency caused by defects of the WAS protein (WASP) gene. Patients with WAS typically demonstrate micro-thrombocytopenia. Procedures The report describes seven male infants with WAS that initially presented with leukocytosis, monocytosis, and myeloid and erythroid precursors in the peripheral blood (PB) and dysplasia in the bone marrow (BM), which was initially indistinguishable from juvenile myelomonocytic leukaemia (JMML). Results The median age of affected patients was 1 month (range, 14 months). Splenomegaly was absent in four of these patients, which was unusual for JMML. A mutation analysis of genes in the RAS-signalling pathway did not support a diagnosis of JMML. Non-haematological features, such as eczema (n=7) and bloody stools (n=6), ultimately led to the diagnosis of WAS at a median age of 4 months (range, 38 months), which was confirmed by absent (n=6) or reduced (n=1) WASP expression in lymphocytes by flow cytometry (FCM) and a WASP gene mutation. Interestingly, mean platelet volume (MPV) was normal in three of five patients and six of seven patients demonstrated occasional giant platelets, which was not compatible with WAS. Conclusions These data suggest that WAS should be considered in male infants presenting with JMML-like features if no molecular markers of JMML can be detected. Pediatr Blood Cancer 2013; 60: 836841. (c) 2012 Wiley Periodicals, Inc.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHRONIC MYELOGENOUS LEUKEMIA; X-LINKED THROMBOCYTOPENIA; ALDRICH-SYNDROME; WASP GENE; HEMATOPOIETIC PROGENITORS; MYELODYSPLASTIC SYNDROMES; DIFFERENTIAL-DIAGNOSIS; CONGENITAL NEUTROPENIA; ACTIN POLYMERIZATION; MYELOID-LEUKEMIA; children; juvenile myelomonocytic leukaemia; WiskottAldrich syndrome |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Kinder- und Jugendmedizin |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Apr 2020 07:45 |
| Last Modified: | 16 Apr 2020 07:45 |
| URI: | https://pred.uni-regensburg.de/id/eprint/16787 |
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