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Venetoclax plus dose-adjusted R-EPOCH for Richter syndrome.
Blood ( IF 21.0 ) Pub Date : 2022-02-03 , DOI: 10.1182/blood.2021011386
Matthew S Davids 1 , Kerry A Rogers 2 , Svitlana Tyekucheva 3 , Zixu Wang 3 , Samantha Pazienza 1 , Sarah K Renner 4 , Josie Montegaard 1 , Udochukwu Ihuoma 1 , Timothy Z Lehmberg 1 , Erin M Parry 1 , Catherine J Wu 1, 5 , Caron A Jacobson 1 , David C Fisher 1 , Philip A Thompson 4 , Jennifer R Brown 1
Affiliation  

Richter syndrome (RS) of chronic lymphocytic leukemia (CLL) is typically chemoresistant, with a poor prognosis. We hypothesized that the oral Bcl-2 inhibitor venetoclax could sensitize RS to chemoimmunotherapy and improve outcomes. We conducted a single-arm, investigator-sponsored, phase 2 trial of venetoclax plus dose-adjusted rituximab, etoposide, prednisone, vincristine, cyclophosphamide, and doxorubicin (VR-EPOCH) to determine the rate of complete response (CR). Patients received R-EPOCH for 1 cycle, then after count recovery, accelerated daily venetoclax ramp-up to 400 mg, then VR-EPOCH for up to 5 more 21-day cycles. Responders received venetoclax maintenance or cellular therapy off-study. Twenty-six patients were treated, and 13 of 26 (50%) achieved CR, with 11 achieving undetectable bone marrow minimal residual disease for CLL. Three additional patients achieved partial response (overall response rate, 62%). Median progression-free survival was 10.1 months, and median overall survival was 19.6 months. Hematologic toxicity included grade ≥3 neutropenia (65%) and thrombocytopenia (50%), with febrile neutropenia in 38%. No patients experienced tumor lysis syndrome with daily venetoclax ramp-up. VR-EPOCH is active in RS, with deeper, more durable responses than historical regimens. Toxicities from intensive chemoimmunotherapy and venetoclax were observed. Our data suggest that studies comparing venetoclax with chemoimmunotherapy to chemoimmunotherapy alone are warranted. This trial was registered at www.clinicaltrials.gov as #NCT03054896.

中文翻译:

Venetoclax 加剂量调整 R-EPOCH 治疗里氏综合征。

慢性淋巴细胞白血病 (CLL) 的里氏综合征 (RS) 通常具有化疗耐药性,预后较差。我们假设口服 Bcl-2 抑制剂维奈托克可以使 RS 对化学免疫疗法敏感并改善结果。我们开展了一项由研究者发起的单组 2 期试验,研究维奈托克加剂量调整后的利妥昔单抗、依托泊苷、泼尼松、长春新碱、环磷酰胺和多柔比星 (VR-EPOCH),以确定完全缓解率 (CR)。患者接受 1 个周期的 R-EPOCH,然后在计数恢复后,加速每日维奈托克增加至 400 mg,然后再接受 VR-EPOCH 最多 5 个 21 天周期。应答者在研究外接受维奈托克维持治疗或细胞治疗。26 名患者接受了治疗,26 名患者中有 13 名 (50%) 获得了 CR,其中 11 名获得了无法检测到的 CLL 骨髓微小残留病。另外三名患者实现了部分反应(总反应率,62%)。中位无进展生存期为 10.1 个月,中位总生存期为 19.6 个月。血液学毒性包括≥3 级中性粒细胞减少症 (65%) 和血小板减少症 (50%),其中 38% 为发热性中性粒细胞减少症。没有患者经历每日维奈托克递增的肿瘤溶解综合征。VR-EPOCH 在 RS 中很活跃,与历史方案相比具有更深入、更持久的反应。观察了强化化学免疫疗法和维奈托克的毒性。我们的数据表明,有必要开展比较维奈托克联合化学免疫疗法与单独化学免疫疗法的研究。该试验在 www.clinicaltrials.gov 注册为#NCT03054896。中位总生存期为 19.6 个月。血液学毒性包括≥3 级中性粒细胞减少症 (65%) 和血小板减少症 (50%),其中 38% 为发热性中性粒细胞减少症。没有患者经历每日维奈托克递增的肿瘤溶解综合征。VR-EPOCH 在 RS 中很活跃,与历史方案相比具有更深入、更持久的反应。观察了强化化学免疫疗法和维奈托克的毒性。我们的数据表明,有必要开展比较维奈托克联合化学免疫疗法与单独化学免疫疗法的研究。该试验在 www.clinicaltrials.gov 注册为#NCT03054896。中位总生存期为 19.6 个月。血液学毒性包括≥3 级中性粒细胞减少症 (65%) 和血小板减少症 (50%),其中 38% 为发热性中性粒细胞减少症。没有患者经历每日维奈托克递增的肿瘤溶解综合征。VR-EPOCH 在 RS 中很活跃,与历史方案相比具有更深入、更持久的反应。观察了强化化学免疫疗法和维奈托克的毒性。我们的数据表明,有必要开展比较维奈托克联合化学免疫疗法与单独化学免疫疗法的研究。该试验在 www.clinicaltrials.gov 注册为#NCT03054896。比历史方案更持久的反应。观察了强化化学免疫疗法和维奈托克的毒性。我们的数据表明,有必要开展比较维奈托克联合化学免疫疗法与单独化学免疫疗法的研究。该试验在 www.clinicaltrials.gov 注册为#NCT03054896。比历史方案更持久的反应。观察了强化化学免疫疗法和维奈托克的毒性。我们的数据表明,有必要开展比较维奈托克联合化学免疫疗法与单独化学免疫疗法的研究。该试验在 www.clinicaltrials.gov 注册为#NCT03054896。
更新日期:2021-11-17
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