Abstract
Few effective therapies are available to treat patients with relapsed/refractory myelodysplastic neoplasms (MDS). Luspatercept was shown to display good efficacy in a phase 3 clinical trial for lower-risk MDS (LR-MDS) patients, yet real-world data are limited, especially in China. Therefore, data from patients diagnosed as having MDS with low blasts and SF3B1 mutation (MDS-SF3B1) and MDS with SF3B1 mutation and thrombocytosis were retrospectively analyzed. Of the 23 enrolled patients, 17 (73.9%) were males (median age 67 years: range 29 to 80 years). Previously, a total of 22 (95.7%) patients had received recombinant human erythropoietin (rhEPO), 9 (39.1%) roxadustat, 7 (30.4%) lenalidomide and 3 (13.0%) hypomethylating agents (HMA). The median treatment time was 22.9 weeks (9.0–32.4). At week 12, 60.9% (14/23) of the patients achieved a hematologic improvement–erythroid (HI-E) response. Red blood cell transfusion independence (RBC-TI) for ≥ 8 weeks was found in 57.1% (8/14) of transfusion-dependent patients. The median hemoglobin concentration was 84 g/L, and patients had significantly higher hemoglobin concentrations after 12 weeks of treatment (P < 0.001). It is noteworthy that responders had a greater reduction in serum ferritin (P = 0.021). Those with serum EPO < 500 IU/L at baseline tended to have a higher HI-E rate (P = 0.081), but only patients in non-transfusion and low transfusion burden (LTB) subgroups had statistical differences (P = 0.024). The most commonly occurring adverse events were blood bilirubin increase (17.4%), fatigue (13.0%) and dizziness (13.0%). Luspatercept was effective and tolerated well in refractory LR-MDS-SF3B1 patients. In particular, baseline non-transfusion and LTB patients exhibited a greater response rate to treatment.
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The datasets are available from the corresponding author upon reasonable request.
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Acknowledgements
We appreciate every patient who allowed us to access their medical records and responded to our review telephone calls. We appreciate all the centers for providing cases and assisting with our follow-up.
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The National High Level Hospital Clinical Research Funding (2022-PUMCH-C-026, 2022-PUMCH-D-002, 2022-PUMCH-B-046) CAMS, Innovation Fund for Medical Sciences (CIFMS 2021-I2M-1–003) and Beijing Natural Science Foundation (7232109).
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Conceptualization: Zhuxin Zhang, Bing Han; Formal analysis and investigation: Zhuxin Zhang; Qinglin Hu; Writing – preparation of the first draft of the manuscript: Zhuxin Zhang; Writing, reviewing and editing: Zhuxin Zhang, Bing Han; Funding acquisition: Bing Han; Resources: Xudong Tang, Min Zhang, Jinsong Jia, Hongxia Shi, Xiaoqing Ding, Chen Yang, Miao Chen, Bing Han; Supervision: Bing Han.
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Zhang, Z., Hu, Q., Tang, X. et al. Treatment of refractory or relapsed myelodysplastic neoplasms with luspatercept: a multicenter Chinese study. Ann Hematol 102, 3039–3047 (2023). https://doi.org/10.1007/s00277-023-05334-y
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DOI: https://doi.org/10.1007/s00277-023-05334-y