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Ionized Calcium Binding Adaptor Molecule 1 (IBA1).
- Source :
-
American Journal of Clinical Pathology . Jul2021, Vol. 156 Issue 1, p86-99. 14p. - Publication Year :
- 2021
-
Abstract
- <bold>Objectives: </bold>Ionized calcium binding adaptor molecule 1 (IBA1), a marker of microglia/macrophages, has not been investigated in human hematopathologic contexts. We evaluated its expression in mature and immature neoplasms of monocytic/histiocytic and dendritic cell (DC) origin.<bold>Methods: </bold>Immunohistochemistry for IBA1, CD14, CD68, and CD163 was performed on a total of 114 cases, including a spectrum of monocytic/histiocytic and DC neoplasms (20 tissue based and 59 bone marrow based) and several nonhistiocytic/monocytic/DC neoplasms as control groups (15 tissue based and 20 bone marrow based).<bold>Results: </bold>IBA1 expression was observed in all types of mature tissue-based histiocytic/DC neoplasms (20/20) but not in the corresponding control group (0/15). In bone marrow-based cases, IBA1 was expressed in most acute myeloid leukemias (AMLs) with monocytic differentiation (48/53), both blastic plasmacytoid dendritic cell neoplasms (2/2), and all chronic myelomonocytic leukemias (4/4), while it was positive in only one nonmonocytic AML (1/15) and none of the acute lymphoblastic leukemias (0/5). Collectively, IBA1 showed much higher sensitivity and specificity (93.7%, 97.1%) compared with CD14 (65.4%, 88.2%), CD68 (74.4%, 74.2%), and CD163 (52.6%, 90.6%).<bold>Conclusions: </bold>IBA1 is a novel, highly sensitive, and specific marker for diagnosing neoplasms of monocytic/histiocytic and DC origin. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00029173
- Volume :
- 156
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- American Journal of Clinical Pathology
- Publication Type :
- Academic Journal
- Accession number :
- 151010709
- Full Text :
- https://doi.org/10.1093/ajcp/aqaa209