Selinexor combined with chemotherapy in relapsed/refractory multiple myeloma: interim results from the multi-center, open-label LAUNCH study
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摘要: 目的 评估塞利尼索、地塞米松(Sd)联合化疗药物在复发/难治性多发性骨髓瘤患者中的疗效及安全性。方法 这是一项多中心、开放标签、单臂的临床研究,分为2个治疗臂:SDd组:塞利尼索80 mg d1,8,15,22,地塞米松40 mg d1,8,15,22,脂质体阿霉素25~35 mg/m2,d1;SCd组:塞利尼索100 mg d1,8,15,22,地塞米松40 mg d1,8,15,22,环磷酰胺300 mg/m2,d1,8,15,22。每28 d为1个疗程,共12个疗程。主要终点为客观缓解率(ORR),次要终点包括安全性、无进展生存期、总生存期等。结果 截止到2023年4月30日,共入组36例患者。中位年龄为59(29~74)岁,患者应用塞利尼索的时间距离初次诊断的中位时间为3.5(0.5~15.5)年,中位既往治疗线数为3(1~8)。其中6例(16.7%)患者伴髓外病灶,12例(33.3%)患者伴高危细胞遗传学,4例(11.1%)患者既往接受过自体造血干细胞移植,3例(8.3%)患者既往接受过CAR-T治疗。既往药物暴露情况:硼替佐米(94.4%)、来那度胺(80.6%)、泊马度胺(41.7%)、达雷妥尤单抗(27.8%),阿霉素和环磷酰胺(19.4%)。1例患者已完成12个疗程治疗,4例患者治疗>10个疗程,12例患者仍在治疗中,最主要的出组原因依次为患者要求退出、疾病进展和治疗不耐受。在可评估的29例患者中,ORR为48.3%(14/29),包括完全缓解1例,非常好的部分缓解1例,部分缓解12例。治疗至缓解中位时间为2个月。中位无进展生存期为11.6个月,总生存期未达到,1年生存率为75.0%。其中SDd组(n=19)的ORR为52.6%;SCd组(n=10)的ORR为40.0%。治疗相关不良反应的发生主要集中在前2个治疗周期,多数为1~2级,通过积极的支持治疗或对症处理后,不良反应均有所改善。其中最常见的血液学不良反应(整体/3~4级)为:血小板减少(58.3%/25.0%),白细胞减少(50.0%/30.6%)和贫血(41.7%/22.2%);最常见的非血液学不良反应(整体/3~4级)为:恶心(52.8%/2.8%)、呕吐(38.9%/5.6%)和乏力(30.6%/2.8%)。结论 以Sd为基础联合脂质体阿霉素或环磷酰胺在复发/难治性多发性骨髓瘤患者中观察到良好的疗效,治疗过程中的不良反应也可通过积极的支持治疗和剂量调整得到改善。
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关键词:
- 复发/难治多发性骨髓瘤 /
- 塞利尼索 /
- 化疗
Abstract: Objective To evaluate the preliminary efficacy and safety of combination of selinexor and dexamethasone(Sd) with chemotherapy in patients with relapsed/refractory multiple myeloma.Methods This is a multicenter, open label, single arm clinical study divided into two treatment arms: SDd arm: selinexor 80 mg d1, 8, 15, 22, dexamethasone 40 mg d1, 8, 15, 22, and liposome doxorubicin 25-35 mg/m2 d1; SCd arm: selinexor 100 mg d1, 8, 15, 22, dexamethasone 40 mg d1, 8, 15, 22, and cyclophosphamide 300 mg/m2 d1, 8, 15, 22.28 d per cycle in both arms, and a total of 12 cycles. The primary endpoint is the objective response rate(ORR), while secondary endpoints include safety, progression free survival(PFS), and overall survival(OS).Results As of April 30, 2023, a total of 36 patients were enrolled. The median age was 59(range 29-74) years old, and the median time between the initial diagnosis and enrollment was 3.5(range 0.5-15.5) years. Median number of previous treatment lines of 3(range 1-8). Six patients(16.7%) had extramedullary disease, 12 patients(33.3%) had high-risk cytogenetic abnormalities, 4 patients(11.1%) had previously received autologous stem cell transplantation, and 3 patients(8.3%) had previously treated with CAR-T. Previous drug exposure: bortezomib(94.4%), lenalidomide(80.6%), pomadolide(41.7%), daratumumab(27.8%), doxorubicin and cyclophosphamide(19.4%). 1 patient had completed 12 cycles of treatment, 4 patients had received more than 10 cycles of treatment, and 12 patients were still under treatment. Median follow-up time: 2.25(0.25-12.00)months. Among the 29 evaluable patients, the objective response rate(ORR) was 48.3%(14/29), including 1 case with complete response, 1 case with very good partial response, 12 cases with partial response. The disease control rate was 89.7%(26/29). Median time from treatment to first response was 2 months. The median PFS was 11.6 months, the median OS was not reached, and 1-year OS rate was 75.0%. The ORR was 52.6% in SDd arm(n=19) and 40.0% in SCd arm(n=10). The treatment related adverse events was mainly concentrated in the first two treatment cycles, most of which were grade 1-2. Through active supportive treatment or symptomatic treatment, the adverse events had improved. The most common hematological adverse events(all grades/grade 3-4) were thrombocytopenia(58.3%/25.0%), leukopenia(50.0%/30.6%), and anemia(41.7%/22.2%). The most common non-hematological adverse events(all grades/grade 3-4) were nausea(52.8%/2.8%), vomiting(38.9%/5.6%) and fatigue(30.6%/2.8%).Conclusion The combination of Sd based chemotherapy drugs has been observed to have good therapeutic effects in patients with recurrent/refractory multiple myeloma. The adverse events during the treatment process can also be improved through active supportive treatment and dose adjustment, providing a positive reference for clinical application.-
Key words:
- relapsed/refractory multiple myeloma /
- selinexor /
- chemotherapy
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表 1 患者基线情况
临床特征 整体(n=36) SDd组(n=23) SCd组(n=13) 年龄/岁 59(29~74) 54(29~74) 64(53~74) 性别/例(%) 男 16(44.4) 10(43.5) 6(46.2) 女 20(55.6) 13(56.5) 7(53.8) ISS分期/例(%) Ⅰ 15(41.7) 9(39.1) 6(46.2) Ⅱ 13(36.1) 7(30.4) 6(46.2) Ⅲ 8(22.2) 7(30.4) 1(7.7) 诊断至治疗的时间/年 3.5(0.5~15.5) 3.5(0.5~15.5) 3.7(1.1~10.2) 髓外病灶/例(%) 6(16.7) 5(21.7) 1(7.7) 高危细胞遗传学/例(%) 12(33.3) 8(34.8) 4(30.8) 既往治疗线数 3(1~8) 3(1~8) 2(1~8) 来那度胺暴露/例(%) 29(80.6) 19(82.6) 10(76.9) 泊马度胺暴露/例(%) 15(41.7) 8(34.8) 7(53.8) 硼替佐米暴露/例(%) 34(94.4) 22(95.7) 12(92.3) 达雷妥尤单抗暴露/例(%) 10(27.8) 7(30.4) 3(23.1) 环磷酰胺暴露/例(%) 27(75.0) 20(87.0) 7(53.8) 多柔比星暴露/例(%) 9(25.0) 8(34.8) 1(7.7) CAR-T/例(%) 3(8.3) 1(4.3) 2(15.4) 移植/例(%) 4(11.1) 3(13.0) 1(7.7) 表 2 患者治疗相关不良反应发生情况
例(%) 不良反应 整体(n=36) SDd(n=23) SCd组(n=13) 整体发生率 3~4级发生率 整体发生率 3~4级发生率 整体发生率 3~4级发生率 血液学 血小板减少症 21(58.3) 9(25.0) 16(69.6) 6(26.1) 5(38.5) 3(23.1) 白细胞减少症 18(50.0) 11(30.6) 14(60.9) 7(30.4) 4(30.8) 4(30.8) 贫血 15(41.7) 8(22.2) 11(47.8) 4(17.4) 4(30.8) 4(30.8) 中性粒细胞减少症 9(25.0) 4(11.1) 7(30.4) 2(8.7) 2(15.4) 2(15.4) 非血液学 恶心 19(52.8) 1(2.8) 10(43.5) 1(4.3) 9(69.2) 0 呕吐 14(38.9) 2(5.6) 10(43.5) 2(8.7) 4(30.8) 0 乏力 11(30.6) 1(2.8) 7(30.4) 1(4.3) 4(30.8) 0 厌食 9(25.0) 1(2.8) 6(26.1) 1(4.3) 3(23.1) 0 腹泻 5(13.9) 0 3(13.0) 0 2(15.4) 0 便秘 5(13.9) 0 3(13.0) 0 2(15.4) 0 失眠 5(13.9) 0 4(17.4) 0 1(7.7) 0 腹胀 4(11.1) 0 2(8.7) 0 2(15.4) 0 -
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