We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Empfehlungen zur Diagnostik der Paroxysmalen nächtlichen Hämoglobinurie: deutsch - österreichischer Konsensus/Recommendations for the diagnosis of paroxysmal nocturnal hemoglobinuria: a German-Austrian consensus.
- Authors
Schrezenmeier, Hubert; Bettelheim, Peter; Panse, Jens; Schubert, Jörg; Höchsmann, Britta; Röth, Alexander; Nebe, Thomas
- Abstract
Paroxysmal nocturnal hemoglobinuria (PNH) is a rare, life-threatening hematological disease. An acquired mutation in the PIG-A gene in hematopoietic precursor cells leads to a deficiency of glycosylphosphatidylinositol (GPI), a common membrane anchor for certain cell surface proteins. The consequence is a deficiency of the decay accelerating factor (recognized by antibodies of the cluster CD55) and of the membrane inhibitor of reactive lysis (MIRL, recognized by CD59 antibodies) on the surface of blood cells leading to dysregulation of the complement cascade resulting in characteristic intravascular hemolysis and thromboembolic complications. The analysis of GPI-anchored proteins on blood cells is the recognized diagnostic gold standard. Some aspects of the recently published international guidelines are still a matter of discussion. On the basis of these guidelines, we discussed practical recommendations which led to the German-Austrian consensus paper presented here. It contains specific proposals for indication of the test, preanalytical aspects, how to perform immunophenotyping and for interpretation of results. We propose a two-step diagnostic approach. Step 1 is a screening and step 2 is a confirmation of the diagnosis. The latter should be restricted to laboratories who have substantial experience with PNH. According to this algorithm for a stepwise diagnostic approach we recommend which antibody panel should be used in which step. The most frequent sources of error and how to avoid them are also summarized. This consensus should support medical laboratories in making an early and correct diagnosis of what is important to the therapy and prognosis of the patient. Aspects of economic efficiency and feasibility were also included in our considerations.
- Subjects
AUSTRIA; GERMANY; MYELODYSPLASTIC syndromes; FLOW cytometry; IMMUNOPHENOTYPING; MEDICAL protocols; GENETIC mutation; DIAGNOSIS
- Publication
Journal of Laboratory Medicine / Laboratoriums Medizin, 2011, Vol 35, Issue 6, p315
- ISSN
0342-3026
- Publication type
Article
- DOI
10.1515/JLM.2011.060