Abstract
Treatment options for multiple myeloma (MM) at 1st relapse are expanding. The current study compared common 2nd line regimens administered in a real-world setting. MM patients registered in Maccabi health care services and treated with second line therapy during 2014–2020 were evaluated, analyzing factors affecting time to third line therapy (TT3T). The study included 500 MM patients, previously treated with proteasome inhibitor (PI)–based induction. Median age at second line treatment was 68.5 years (IQR: 61.6–76.4). Most patients received a triplet based induction composed of PI (n = 471, 94.2%), with (n = 71) or without IMID (n = 400), followed by second line treatment composed of lenalidomide-dexamethasone (RD) (n = 225, 45%) or lenalidomide–dexamethasone–daratumumab (RD-Dara (n = 104, 20.8%)). Multivariable analysis confirmed treatment type (RD-Dara vs. IMID) to be associated with a lower risk to progress to third line therapy; (HR = 0.5, 95% CI 0.3–0.86, p = 0.012). Within a median follow-up period of 22.5 months (intraquartile range 11.1–39.4 m), median TT3T was not reached in patients receiving RD-Dara vs. 32.4 months (95% CI 18.0–46.8 m) with IMID, 18 months (95% CI 10.4–25.6 m) with IMID-PI and 12.1 months (95% CI 5.6–18.7 m) with PI-based regimen. In contrast, PI vs. IMID-based therapy and increased body weight were associated with a higher likelihood of progression (HR = 2.56 (95% CI 1.49–4.42); HR = 1.43, (95% CI 0.96–2.14), p = 0.08). To conclude, second line therapy with RD-Dara was associated with a significantly longer TT3T compared with IMID-based regimen, longer than obtained with PI-IMID and PI-based regimens, in patients treated outside clinical studies and previously exposed to bortezomib.
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All authors designed the protocol and the study concept. Naama Yekutiel extracted and analyzed the data. Irit Avivi, Naama Yekutiel, Gabriel Chodick, Neta Frankel, and Tamir Shragai interpreted the results. Irit Avivi, Naama Yekutiel, and Gabriel Chodick wrote the first draft of the manuscript. All authors provided feedback on the manuscript, writing, reviewing, and approving the final version for submission.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Prof. Gabriel Chodick, Naama Yekutiel, Clara Weil, Prof. Yael C. Cohen, and Dr. Tamir Shragai do not have any conflict of interest. Prof. Irit Avivi was a consultant to abbvie and received research funding. Dr. Moshe Grunspan, Dr. Noa Rivlin, Dr. Neta Frankel, and Dr. Raanan Cohen are employees of AbbVie and own AbbVie stock.
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Avivi, I., Yekutiel, N., Shragai, T. et al. Management and outcome of 500 multiple myeloma patients treated for first relapse outside clinical studies. Ann Hematol 102, 3075–3081 (2023). https://doi.org/10.1007/s00277-023-05307-1
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DOI: https://doi.org/10.1007/s00277-023-05307-1