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Lacombe V, Hadjadj J, Georgin-Lavialle S, Lavigne C, Geneviève F, Kosmider O. Vacuoles in bone marrow progenitors: VEXAS syndrome and beyond. Lancet Haematol 2024; 11:e160-e167. [PMID: 38302223 DOI: 10.1016/s2352-3026(23)00375-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 11/29/2023] [Accepted: 12/11/2023] [Indexed: 02/03/2024]
Abstract
The presence of vacuoles in myeloid and erythroid progenitor cells in bone marrow aspirates is a key feature of vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic (VEXAS) syndrome. The mere observation of vacuolated progenitor cells is not specific to VEXAS syndrome; in this Viewpoint, we point out the causes to be considered in this situation. Vacuoles, in particular, can be observed in individuals with wild-type UBA1 and with persistent inflammatory features or myelodysplastic syndromes. However, several clues support the diagnosis of VEXAS syndrome in the presence of vacuolated bone marrow progenitors: a high number of vacuolated progenitors and of vacuoles per cell, the predominance of vacuoles in early rather than late progenitors, and the vacuolisation of both myeloid and erythroid progenitors with predominance of myeloid ones. Some criteria derived from these observations have been proposed with great diagnostic performances. However, the absence or a low proportion of vacuolated cells should not prevent UBA1 gene sequencing.
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Affiliation(s)
- Valentin Lacombe
- Service de Médecine interne et immunologie clinique, Centre Hospitalier Universitaire d'Angers, Angers, France; Centre de Référence des Maladies auto-immunes et auto-inflammatoires systémiques de l'adulte Nord, Nord-ouest, Méditerranée et Guadeloupe (CeRAINOM), Angers, France; Mitolab, unité MitoVasc, INSERM U1083, CNRS UMR6015, Université d'Angers, Angers, France.
| | - Jérome Hadjadj
- Service de Médecine interne, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Sophie Georgin-Lavialle
- Service de Médecine interne, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France; Centre de référence constitutif des maladies auto-inflammatoires et de l'amylose inflammatoire (CEREMAIA), Paris, France
| | - Christian Lavigne
- Service de Médecine interne et immunologie clinique, Centre Hospitalier Universitaire d'Angers, Angers, France; Centre de Référence des Maladies auto-immunes et auto-inflammatoires systémiques de l'adulte Nord, Nord-ouest, Méditerranée et Guadeloupe (CeRAINOM), Angers, France
| | - Franck Geneviève
- Laboratoire d'Hématologie, Centre Hospitalier Universitaire d'Angers, Angers, France; Fédération Hospitalo-Universitaire Grand Ouest Against Leukemia (FHU GOAL), Angers, France
| | - Olivier Kosmider
- Laboratoire d'Hématologie, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, Paris, France
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