Plasmacytoid dendritic cells proliferation associated with acute myeloid leukemia: phenotype profile and mutation landscape.

Plasmacytoid dendritic cells proliferation associated with acute myeloid leukemia: phenotype profile and mutation landscape. Haematologica. 2020 Oct 13;Online ahead of print: Authors: Zalmaï L, Viailly PJ, Biichle S, Cheok M, Soret L, Angelot-Delettre F, Petrella T, Collonge-Rame MA, Seilles E, Geffroy S, Deconinck E, Daguindau E, Bouyer S, Dindinaud E, Baunin V, Le Garff-Tavernier M, Roos-Weil D, Wagner-Ballon O, Salaun V, Feuillard J, Brun S, Drenou B, Mayeur-Rousse C, Okamba P, Dorvaux V, Tichionni M, Rose J, Rubio MT, Jacob MC, Raggueneau V, Preudhomme C, Saas P, Ferrand C, Adotevi O, Roumier C, Jardin F, Garnache-Ottou F, Renosi F Abstract Neoplasms involving plasmacytoid Dendritic Cells (pDCs) include Blastic pDC Neoplasms (BPDCN) and other pDC proliferations, where pDCs are associated with myeloid malignancies: most frequently Chronic MyeloMonocytic Leukemia (CMML) but also Acute Myeloid Leukemia (AML), hereafter named pDC-AML. We aimed to determine the reactive or neoplastic origin of pDCs in pDC-AML, and their link with the CD34+ blasts, monocytes or conventional DCs (cDCs) associated in the same sample, by phenotypic and molecular analyses (targeted NGS, 70 genes). We compared 15 pDC-AML at diagnosis with 21 BPDCN and 11 normal pDCs from healthy donors. CD45low CD34+ blasts were found in all cases (10-80% of medullar cells), associated with pDCs (4-36%), monocytes in 14 cases (1-10%) and cDCs (2 cases, 4.8-19%). pDCs in pD...
Source: Haematologica - Category: Hematology Authors: Tags: Haematologica Source Type: research