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Gressens, Simon B.; Enouf, Vincent; Créon, Antoine; Melica, Giovanna; Lemonnier, Francois; Dupuis, Jehan; El Gnaoui, Taoufik; Hammoud, Mohammad; Belhadj, Karim; Haioun, Corinne; Le Bouter, Anne; Gallien, Sebastien; Bras, Fabien Le; Fourati, Slim
International journal of infectious diseases, 09/2024, Letnik: 146Journal Article
•Multiple myeloma patients have poor serological responses after influenza vaccination.•Treatment with daratumumab (anti-CD38) does not seem to further impair such response.•A boosted vaccination could have a positive impact on humoral responses.•Future research is needed for innovative prophylaxis strategies in these patients. Daratumumab-treated myeloma patients may face increased seasonal influenza risk due to weakened postvaccination immune responses, especially with daratumumab treatment. We aimed to assess humoral responses to boosted influenza vaccination in daratumumab-treated or -untreated patients. In a single-center study, we evaluated humoral responses (hemagglutination-inhibition assay) one month following a two-injection (4-weeks apart) influenza vaccination (standard dose) in 84 patients with multiple myeloma (40 with daratumumab in the past year). Seroprotection rates (titer ≥1/40) after the second vaccine injection were low across vaccinal subtypes (except for A-H3N2): 71.3% (A-H3N2), 19.7% (A-H1N1pdm09), 9.9% (B-Victoria), 11.3% (B-Yamagata). Only A-H3N2 seroprotection rates significantly increased with the booster in daratumumab-treated patients (30% (12/40) after one injection vs 55% (22/40) after the boost; P = 0.01).After propensity score weighting, daratumumab was not significantly associated with a reduced likelihood of seroprotection against at least one vaccine strain (OR 0.65 95% CI: 0.22-1.88). While daratumumab treatment did not lead to a significant reduction in seroprotection rates following influenza vaccination, a booster vaccine injection demonstrated potential benefit for specific strains (A-H3N2) in patients undergoing daratumumab treatment. Nevertheless, the overall low response rates in patients with multiple myeloma necessitates the development of alternative vaccination and prophylaxis strategies.
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in: SICRIS
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