Diagnostic capabilities, clinical features, and longitudinal UBA1 clonal dynamics of a nationwide VEXAS cohort

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VEXAS is a prototypic hemato-inflammatory disease combining rheumatologic and hematologic disorders in a molecularly defined nosological entity. In this nationwide study, we aimed at screenshotting the current diagnostic capabilities and clinical-genomic features of VEXAS, and tracked UBA1 longitudinal clonal dynamics upon different therapeutics, including allogeneic hematopoietic cell transplant. We leveraged a collaboration between the Italian Society of Experimental Hematology and of Rheumatology and disseminated a national survey to collect clinical and molecular patient information. Overall, 13/29 centers performed UBA1 genomic testing locally, including Sanger sequencing (46%), next-generation sequencing (23%), droplet digital polymerase chain reaction (8%), or combination (23%). A total of 41 male patients were identified, majority (51%) with threonine substitutions at Met41 hotspot, followed by valine and leucine (27% and 8%). Median age at VEXAS diagnosis was 67 years. All patients displayed anemia (median hemoglobin 9.1 g/dL), with macrocytosis. Bone marrow vacuoles were observed in most cases (89%). The most common rheumatologic association was polychondritis (49%). A concomitant myelodysplastic neoplasm/syndrome (MDS) was diagnosed in 71% of patients (n = 28), chiefly exhibiting lower Revised International Prognostic Scoring System risk profiles. Karyotype was normal in all patients, except three MDS cases showing -Y, t(12;16)(q13;q24), and +8. The most frequently mutated gene was DNMT3A (n = 10), followed by TET2 (n = 3). At last follow-up, five patients died and two patients progressed to acute leukemia. Longitudinal UBA1 clonal dynamics demonstrated mutational clearance following transplant. We collected a nationwide interdisciplinary VEXAS patient cohort, characterized by heterogeneous rheumatologic manifestations and treatments used. MDS was diagnosed in 71% of cases. Patients exhibited various longitudinal UBA1 clonal dynamics.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:99

Enthalten in:

American journal of hematology - 99(2024), 2 vom: 22. Jan., Seite 254-262

Sprache:

Englisch

Beteiligte Personen:

Gurnari, Carmelo [VerfasserIn]
Pascale, Maria Rosaria [VerfasserIn]
Vitale, Antonio [VerfasserIn]
Diral, Elisa [VerfasserIn]
Tomelleri, Alessandro [VerfasserIn]
Galossi, Elisa [VerfasserIn]
Falconi, Giulia [VerfasserIn]
Bruno, Alessandro [VerfasserIn]
Crisafulli, Francesca [VerfasserIn]
Frassi, Micol [VerfasserIn]
Cattaneo, Chiara [VerfasserIn]
Bertoli, Diego [VerfasserIn]
Bernardi, Massimo [VerfasserIn]
Condorelli, Annalisa [VerfasserIn]
Morsia, Erika [VerfasserIn]
Poloni, Antonella [VerfasserIn]
Crisà, Elena [VerfasserIn]
Caravelli, Daniela [VerfasserIn]
Triggianese, Paola [VerfasserIn]
Brussino, Luisa [VerfasserIn]
Battipaglia, Giorgia [VerfasserIn]
Bindoli, Sara [VerfasserIn]
Sfriso, Paolo [VerfasserIn]
Caroni, Federico [VerfasserIn]
Dragani, Matteo [VerfasserIn]
Mallegni, Flavia [VerfasserIn]
Pilo, Federica [VerfasserIn]
Firinu, Davide [VerfasserIn]
Curti, Antonio [VerfasserIn]
Papayannidis, Cristina [VerfasserIn]
Olivieri, Attilio [VerfasserIn]
Kordasti, Sharham [VerfasserIn]
Albano, Francesco [VerfasserIn]
Pane, Fabrizio [VerfasserIn]
Musto, Pellegrino [VerfasserIn]
Bocchia, Monica [VerfasserIn]
Lugli, Elisabetta [VerfasserIn]
Breccia, Massimo [VerfasserIn]
Frigeni, Marco [VerfasserIn]
Dagna, Lorenzo [VerfasserIn]
Greco, Raffaella [VerfasserIn]
Franceschini, Franco [VerfasserIn]
Campochiaro, Corrado [VerfasserIn]
Cantarini, Luca [VerfasserIn]
Voso, Maria Teresa [VerfasserIn]

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Date Completed 22.01.2024

Date Revised 22.01.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1002/ajh.27169

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM365993166