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Macrophage activation syndrome-like in multiple myeloma patients treated with the academic CAR-T against BCMA ARI0002h

Year: 2025
Type: article
Study design: Observational Study
Abstract: Background Chimeric antigen receptor T-cell (CAR-T) therapy targeting B-cell maturation antigen (BCMA) has revolutionized multiple myeloma treatment (MM). However, managing its immune-mediated adverse events, particularly macrophage activation syndrome- like (MAS- like ), remains challenging due to underreporting. Methods This multicentre, retrospective, analytical study evaluated MM patients treated with the anti-BCMA academic product ARI0002h. MAS- like was defined using the University of California San Francisco (UCSF) consensus criteria. Primary endpoints included baseline characteristics, predictive factors, and survival outcomes associated with MAS- like . Results Of 80 patients, 12 (15%) met the UCSF criteria for MAS- like . These patients presented higher ISS scores (ISS III: 54.5% vs. 15.2%; p = 0.006), elevated serum monoclonal components (31.3 g/L vs. 6.8 g/L; p = 0.004), and a higher prevalence of extramedullary disease (41.7% vs. 16.2%; p = 0.057). MAS- like typically emerged 9 days post-infusion, with elevated ferritin, followed by LDH (median 11.5 days) and hypofibrinogenemia (median 14 days). One-third of patients met all UCSF criteria, and all exhibited hypertriglyceridemia, hypertransaminasemia, and cytopenias. Histopathological examination was positive in 63% of evaluated patients. Patients who developed MAS- like had poorer responses (CR: 25% vs. 68%; p = 0.008) and shorter median PFS and OS (7 months vs. 21.4 months and 18 months vs. not reached, respectively; p = 0.004). Those meeting all UCSF criteria had even inferior outcomes. Conclusions MAS- like is associated with poorer responses, reduced PFS and OS, especially in patients meeting all UCSF criteria. High tumour burden, including elevated monoclonal component, high ISS and extramedullary disease, seems to contribute to MAS- like development.
Language: English
Subfield: Oncology
Field: Medicine
Open Access status: gold
Estimated APC paid: $3,801
OpenAlex ID: W4415237280
FWCI: 0.721
Cites: 42
Cited by: 2
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