In der 5. Auflage der WHO-Klassifikation für hämatologische Neoplasien wurden im
Jahr 2022 erstmals die klonale Hämatopoese, die klonale Hämatopoese von
unbestimmtem Potenzial und die klonale Zytopenie unbestimmter Signifikanz als
eigenständige Entitäten im Spektrum der myeloischen Neoplasien mit aufgenommen
[1]. Entsprechend stellt sich die Frage, welche praktische Relevanz diese
Veränderungen bereits jetzt für den klinischen Alltag haben.
Abstract
Clonal hematopoiesis of indeterminate potential (CHIP) refers to the outgrowth of
blood cells from a hematopoietic stem cell (HSC) clone that acquired one or more
somatic mutations, leading to a growth advantage compared to wild type HSCs. In
the last years this age-associated phenomenon has been extensively studied, and
several cohort studies found association between CH and age-related diseases,
esp. leukaemia and cardiovascular disease. For patients with CH present with
abnormal blood counts, the term ‘clonal cytopenia of unknown significance’ is
used, which carries a higher risk for developing myeloid neoplasms. In this
year, CHIP and CCUS have been included in the updated WHO classification of
hematolymphoid tumours. We review the current understanding of the emergence of
CHIP, diagnostics, association with other diseases, and potential therapeutic
interventions.
Schlüsselwörter CHIP - CCUS - AML - Inflammaging
Keywords CHIP - CCUS - AML - inflammaging