Gregoire Martin de Fremont, Anthony Vanjak, Zineb Sbihi, Silene Knapp, Margaux Garzaro, Marwa Chbihi, Benjamin Fournier, Justine Poirot, Antoine Dossier, Marc-Antoine Silvestrini, Juliette Villemonteix, Véronique Meignin, Lionel Galicier, Rémi Bertinchamp, Jerome Le Goff, Maud Salmona, Edouard Flamarion, Charles Cassius, Celeste Lebbé, Anne Marie Ronchetti, Sylvain Latour, Eric Oksenhendler, Guislaine Carcelain, David Boutboul
Kaposi Sarcoma-associated herpesvirus/ Human Herpesvirus 8 (KSHV/HHV8) associated multicentric Castleman disease (MCD) is a polyclonal B cell lymphoproliferative disorder mainly occurring in immunocompromised hosts. The diagnosis relies on lymph node biopsy demonstrating KSHV infected cells located in the mantle zone with a marked interfollicular plasma-cell infiltration. Infected cells are large cells positive for IgM, light chain, and CD38, described initially as infected "plasmablasts". We show that IgM+λ+CD38high cells were also detectable in the peripheral blood of 14/18 (78%) patients with active KSHV-MCD and absent from 40 controls...
December 12, 2022: Blood Advances