Hematologic Landscape of Adult Patients With Diamond‐Blackfan Anemia Syndrome
2 AP-HP - Hopital Saint-Louis [AP-HP]
3 CHU Bordeaux - Centre Hospitalier Universitaire de Bordeaux
4 HEMATIM - HEMATIM - Hématopoïèse et immunologie - UR UPJV 4666
5 CHU Amiens-Picardie
6 CHRU Lille - Centre Hospitalier Régional Universitaire [CHU Lille]
7 Pôle IUCT [CHU Toulouse]
8 IUCT Oncopole - UMR 1037 - Institut Universitaire du Cancer de Toulouse - Oncopole
9 CeRéMAIA - Centre de Référence des Maladies Auto-Inflammatoires et des Amyloses [Le Kremlin-Bicêtre]
10 Service d'hématologie
11 Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB)
12 RIGHT - Interactions hôte-greffon-tumeur, ingénierie cellulaire et génique - UFC (UMR INSERM 1098)
13 CHU Besancon, Dept Hematol, Besancon, France
14 ICANS - Institut de Cancérologie de Strasbourg Europe
15 CH Perpignan - Centre Hospitalier Saint Jean de Perpignan
16 Centre Hospitalier Universitaire de Rennes [CHU Rennes] = Rennes University Hospital [Pontchaillou]
17 CHU Trousseau [APHP]
18 AP-HP - Assistance publique - Hôpitaux de Paris (AP-HP)
19 HIPI (UMR_S_976 / U976) - Immunologie humaine, physiopathologie & immunothérapie
20 Service d'Immuno-hématologie pédiatrique [Hôpital Robert Debré, Paris]
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Résumé
Information about Diamond‐Blackfan anemia syndrome (DBAS), a ribosomopathy associated with anemia, congenital anomalies and cancer predisposition is limited in adults. Using the French DBAS registry, 235 adult patients with DBAS were analyzed for hematological outcomes. At last follow‐up, anemia, neutropenia, thrombocytopenia, and pancytopenia affected respectively 78%, 31%, 15%, and 11% of the patients. There was no severe aplastic anemia outside of clonal evolution. Among patients without DBAS‐specific treatment (e.g., steroids or red blood cell transfusions), the incidence of anemia, neutropenia, and thrombocytopenia was 52%, 35%, and 10%, highlighting that treatment independence does not mean hematologic remission. Four patients developed myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML), all associated with poor‐risk features and dismal outcomes. Observed to expected ratios were 155 for MDS and 55.4 for AML, confirming a major risk‐excess despite stringent criteria for MDS diagnosis. With a median follow‐up of 32.2 years (IQR 26–44), overall survival (OS) was 98.0% (95% CI, 95.8–100), 90.6% (95% CI, 84.2–97.5), and 70.7% (95% CI, 57.3–87.2) at 30, 40, and 50 years respectively. Solid and hematologic cancers were the main cause of death. This study demonstrates, in a large cohort of adults with DBAS, that cytopenias beyond anemia are frequent and persistent. Myeloid neoplasms occur with a high incidence and dismal outcomes. These findings highlight the need for risk stratification, tailored surveillance, and optimized therapeutic strategies in this vulnerable population.
