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Atezolizumab combined with immunogenic salvage chemoimmunotherapy in patients with transformed diffuse large B-cell lymphoma.
Haematologica ( IF 8.2 ) Pub Date : 2024-07-18 , DOI: 10.3324/haematol.2024.285185
Tamer Othman 1 , Paul Frankel 2 , Pamela Allen 3 , Leslie L Popplewell 1 , Geoffrey Shouse 1 , Tanya Siddiqi 1 , Alexey V Danilov 1 , Nora Ruel 2 , Shari Daniels 1 , Lacolle Peters 1 , Stella Khoo 1 , Steven T Rosen 1 , Elad Sharon 4 , Miguel Villalona-Calero 5 , Christopher Ruel 2 , Joseph Tuscano 6 , Alex F Herrera 1
Affiliation  

Patients with relapsed/refractory (R/R) transformed diffuse large B-cell lymphoma (DLBCL) from indolent B-cell lymphomas, including Richter transformation (RT), have a poor prognosis. PD-1/PD-L1 antibodies produce modest objective and complete response rates (ORR and CRR) in B-NHL as monotherapy but may synergize with immunogenic chemotherapies like gemcitabine and oxaliplatin (GemOx). Thus, we evaluated the safety and efficacy of atezolizumab plus rituximab and GemOx (R-GemOx+Atezo) in R/R transformed DLBCL, including RT. We conducted a phase I trial including patients with transformed DLBCL after ≥1 prior therapy. Patients received up to 4 cycles of R-GemOx-+Atezo. Patients in CR could then proceed to Ratezo maintenance until progression. A safety lead-in with dose-limiting toxicity (DLT) evaluation was enrolled to confirm the recommended phase 2 dose (RP2D), followed by 2 expansion cohorts: one for transformed follicular lymphoma (FL) and another for non-FL transformed DLBCL, including RT. Twenty-seven patients were enrolled. One of the 6 safety lead-in patients had a DLT attributed to atezolizumab, a grade 4 Stevens-Johnson syndrome (SJS). The most common grade ≥3 events were neutropenia (18.5%), lymphopenia (18.5%), and thrombocytopenia (14.8%). The overall and complete response rates (ORR and CRR) were 59% and 33%, respectively. The ORR and CRR in transformed FL were 79% and 43%, and 38% and 23% in transformed non-FL, respectively. The median PFS and OS of the total population were 4.2 and 7.7 months, respectively. R-GemOx+Atezo was well tolerated and demonstrated promising preliminary efficacy in patients with R/R transformed DLBCL.

中文翻译:


Atezolizumab 联合免疫原性挽救性化学免疫疗法治疗转化弥漫性大 B 细胞淋巴瘤患者。



惰性 B 细胞淋巴瘤引起的复发/难治性 (R/R) 转化弥漫性大 B 细胞淋巴瘤 (DLBCL) 患者,包括里氏转化 (RT),预后不良。PD-1/PD-L1 抗体作为单一疗法在 B-NHL 中产生适度的客观和完全缓解率 (ORR 和 CRR),但可能与吉西他滨和奥沙利铂 (GemOx) 等免疫原性化疗协同作用。因此,我们评估了 atezolizumab 联合利妥昔单抗和 GemOx (R-GemOx+Atezo) 在 R/R 转化的 DLBCL(包括 RT)中的安全性和有效性。我们进行了一项 I 期试验,包括既往接受过 ≥1 治疗后转化的 DLBCL 患者。患者接受多达 4 个周期的 R-GemOx-+Atezo。然后 CR 患者可以继续进行 Ratezo 维持治疗直至进展。纳入了剂量限制性毒性 (DLT) 评估的安全性导入,以确认推荐的 2 期剂量 (RP2D),然后是 2 个扩展队列:一个用于转化滤泡性淋巴瘤 (FL),另一个用于非 FL 转化的 DLBCL,包括 RT。入组了 27 名患者。6 名安全导入患者中有 1 名的 DLT 归因于 atezolizumab,一种 4 级 Stevens-Johnson 综合征 (SJS)。最常见的 ≥ 级事件是中性粒细胞减少症 (18.5%) 、淋巴细胞减少症 (18.5%) 和血小板减少症 (14.8%)。总缓解率和完全缓解率 (ORR 和 CRR) 分别为 59% 和 33%。转化后 FL 的 ORR 和 CRR 分别为 79% 和 43%,转化后的非 FL 分别为 38% 和 23%。总人群的中位 PFS 和 OS 分别为 4.2 个月和 7.7 个月。R-GemOx+Atezo 耐受性良好,并在 R/R 转化的 DLBCL 患者中显示出有希望的初步疗效。
更新日期:2024-07-18
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