Thromb Haemost 1991; 65(03): 300-305
DOI: 10.1055/s-0038-1648139
Original Article
Schattauer GmbH Stuttgart

X-Linked Thrombocytopenia and Thrombocytopathia: Attenuated Wiskott-Aldrich Syndrome

Functional and Morphological Studies of Platelets and Lymphocytes
H Stormorken
1  The Coagulation Laboratory, Medical Department A, Research Institute for Internal Medicine, University of Oslo, Rikshospitalet, Oslo, Norway
,
B Hellum
1  The Coagulation Laboratory, Medical Department A, Research Institute for Internal Medicine, University of Oslo, Rikshospitalet, Oslo, Norway
,
T Egeland
2  The Institute for Immunology and Rheumatology, University of Oslo, Rikshospitalet, Oslo, Norway
,
T G Abrahamsen
3  The Department of Pediatrics, University of Oslo, Rikshospitalet, Oslo, Norway
,
T Hovig
4  The Electron Microscopic Laboratory, Department of Pathology, University of Oslo, Rikshospitalet, Oslo, Norway
› Author Affiliations
Further Information

Publication History

Received: 07 February 1990

Accepted after revision 26 October 1990

Publication Date:
02 July 2018 (online)

Summary

Detailed studies on the rare disorder X-linked thrombocytopenia showed that it resembles the Wiskott-Aldrich syndrome (WAS) in inheritance, clinical bleeding tendency, platelet morphology, marked thrombocytopenia and microplatelets. The calculated platelet mass was 5% of normal. Functional and biochemical studies indicated qualitatively normal aggregation and release mechanisms, whereas a moderate storage pool defect was present. The classical platelet membrane glycoproteins and lymphocyte sialophorin (CD 43) were normal.

The reason for the bleeding tendency was concluded to be deficient hemostatic plug formation resulting from the low platelet mass and a moderate storage pool defect.

The only clear distinction from WAS was the normal immunofunctional tests, the moderate tendency to infections and the absence of eczema. We therefore consider the trait as an attenuated form of WAS. That women are affected may indicate a particular variant.