Efficacy and Safety of Geptanolimab (GB226) for Relapsed or Refractory Peripheral T-Cell Lymphoma: An Open-Label Phase 2 Study (Gxplore-002)

2020 ◽  
Author(s):  
Yuankai Shi ◽  
Jianqiu Wu ◽  
Zhen Wang ◽  
Liling Zhang ◽  
Zhao Wang ◽  
...  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Yuankai Shi ◽  
Jianqiu Wu ◽  
Zhen Wang ◽  
Liling Zhang ◽  
Zhao Wang ◽  
...  

Abstract Background Peripheral T cell lymphoma (PTCL) is a rare disease and recent approved drugs for relapsed/refractory (r/r) PTCL provided limited clinical benefit. We conducted this study to evaluate the efficacy and safety of geptanolimab (GB226), an anti-PD-1 antibody, in r/r PTCL patients. Methods We did this single-arm, multicenter phase 2 study across 41 sites in China. Eligible patients with r/r PTCL received geptanolimab 3 mg/kg intravenously every 2 weeks until disease progression or intolerable toxicity. All patients who received at least one dose of geptanolimab and histological confirmed PTCL entered full analysis set (FAS). The primary endpoint was objective response rate (ORR) in FAS assessed by the independent radiological review committee (IRRC) per Lugano 2014 criteria. Results Between July 12, 2018, and August 15, 2019, 102 patients were enrolled and received at least one dose of geptanolimab. At the data cutoff date (August 15, 2020), the median follow-up was 4.06 (range 0.30–22.9) months. For 89 patients in FAS, 36 achieved objective response (40.4%, 95% CI 30.2–51.4), of which 13 (14.6%) were complete response and 23 (25.8%) had partial response assessed by IRRC. The median duration of response (DOR) was 11.4 (95% CI 4.8 to not reached) months per IRRC. Patients with PD-L1 expression ≥ 50% derived more benefit from geptanolimab treatment compared to < 50% ones (ORR, 53.3% vs. 25.0%, p = 0.013; median PFS 6.2 vs. 1.5 months, p = 0.002). Grade ≥ 3 treatment-related adverse events occurred in 26 (25.5%) patients, and the most commonly observed were lymphocyte count decreased (n = 4) and platelet count decreased (n = 3). Serious adverse events were observed in 45 (44.1%) patients and 19 (18.6%) were treatment related. Conclusions In this study, geptanolimab showed promising activity and manageable safety profile in patients with r/r PTCL. Anti-PD-1 antibody could be a new treatment approach for this patient population. Trial registration: This clinical trial was registered at the ClinicalTrials.gov (NCT03502629) on April 18, 2018.


2020 ◽  
Vol 38 (15_suppl) ◽  
pp. TPS3148-TPS3148
Author(s):  
Cassandra Choe-Juliak ◽  
Karenza M. Alexis ◽  
Sylvia Schwarz ◽  
Linta Garcia ◽  
Ahmed Sawas

TPS3148 Background: AFM13 is a tetravalent, bispecific (anti-CD30/anti-CD16A) recombinant antibody being developed for the treatment of CD30-positive T-cell malignancies and Hodgkin lymphoma. AFM13 selectively kills CD30-positive tumor cells by engaging and activating natural killer cells and macrophages. AFM13 was well tolerated at doses of 0.01 to 7 mg/kg and showed clinical activity in patients with relapsed/refractory (R/R) Hodgkin lymphoma in a Phase 1 study. In an ongoing biomarker Phase 1b/2a study in patients with R/R CD30-positive lymphomas with cutaneous involvement, 4 of 8 patients responded (at different doses) including one CR. Based on these findings, this Phase 2 study (REDIRECT) has been initiated. Methods: This is a Phase 2, open-label, multicenter global study investigating the efficacy and safety of AFM13 in patients with R/R CD30-positive peripheral T cell lymphoma (PTCL) or transformed mycosis fungoides (TMF). AFM13 is administered at 200 mg weekly via an intravenous infusion until disease progression, unacceptable toxicity, investigator discretion or withdrawal of consent. Cohorts A and B include PTCL patients with ≥10%, and ≥1% to <10% CD30 expression by IHC, respectively. Cohort C includes patients with TMF who express ≥1% CD30. Eligible PTCL patients must have received at least 1 prior line of systemic therapy and, if diagnosed with systemic anaplastic large cell lymphoma, must have failed or be intolerant to brentuximab vedotin. Eligible patients with TMF must have received at least 1 prior line of systemic therapy and have exhausted systemic therapies with regular approval for their disease. This global trial started enrollment in Oct 2019. The primary endpoint is objective response rate as confirmed by an Independent Review Committee for all cohorts. The study will also assess investigator-measured efficacy parameters, safety, PK, immunogenicity and QOL. Disease assessment will be done at screening and every 8 weeks for the first 3 assessments, then every 12 weeks thereafter, regardless of any treatment/cycle delays that may occur. ClinicalTrials.gov identifier: NCT04101331. References: Reusch U et al. mAbs. 2014;6(3):728-739. Rothe A et al. Blood. 2015;125(26):4024-4031. Clinical trial information: NCT04101331 .


2018 ◽  
Vol 36 (15_suppl) ◽  
pp. TPS7590-TPS7590 ◽  
Author(s):  
Steven M. Horwitz ◽  
Jasminder Soto ◽  
Hagop Youssoufian ◽  
Deborah Lloyd ◽  
Ngocdiep T. Le

2022 ◽  
Author(s):  
Vittorio Stefoni ◽  
Cinzia Pellegrini ◽  
Lisa Argnani ◽  
Paolo Corradini ◽  
Anna Dodero ◽  
...  

2019 ◽  
Vol 46 (7) ◽  
pp. 557-563 ◽  
Author(s):  
Toshihisa Hamada ◽  
Yoshiki Tokura ◽  
Makoto Sugaya ◽  
Mikio Ohtsuka ◽  
Ryoji Tsuboi ◽  
...  

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 1556-1556 ◽  
Author(s):  
Mingci Cai ◽  
Shu Cheng ◽  
Wang Xin ◽  
Jianda Hu ◽  
Yongping Song ◽  
...  

Background Cyclophosphamide, doxorubicin, vincristine, and prednisolone (CHOP) or CHOP-like chemotherapy is widely used for treatment of peripheral T-cell lymphoma (PTCL). Given the poor response to CHOP-based regimens and the potential anti-lymphoma activity by alternating chemotherapy in PTCL, we conducted a phase 2, multi-center, randomized, controlled trial, comparing the efficacy and safety of CEOP/IVE/GDP alternating regimen with CEOP in a Chinese cohort of newly diagnosed patients with PTCL. Methods The primary endpoint of the study was the complete response rate (CRR). Patients with newly diagnosed PTCL, except for anaplastic large cell lymphoma (ALCL)- anaplastic lymphoma kinase (ALK) positive, were 1:1 randomly assigned. Patients in the CEOP/IVE/GDP group received intravenous cyclophosphamide 750 mg/m², epirubicin 70 mg/m², and vincristine 1.4 mg/m² (up to a maximum of 2 mg) on day 1, and oral prednisone 60 mg/m2 (up to a maximum of 100 mg) on day 1-5 every 21 days, at the 1st and 4th cycle with CEOP. Intravenous ifosfamide 2000 mg/m2 on day 1-3, epirubicin 70 mg/m2 on day 1, and etoposide 100 mg/m2 on day 1-4 every 21 days, at the 2nd and 5th cycle with IVE. Intravenous gemcitabine 1000 mg/m² on day 1, and 8, cisplatin 25 mg/m² on day 1-3, and dexamethasone 40mg on day 1-4 every 21 days, at the 3rd and 6th cycle with GDP, for a total of 6 cycles. Patients in the CEOP group received standard CEOP regimen every 21 days for 6 cycles. Analysis of efficacy and safety was of the intent-to-treat population. The study was registered with ClinicalTrials.gov, number NCT02533700. Findings Between Sep 22, 2015 and Sep 23, 2018, 102 patients were randomly assigned to two treatment groups: 51 each to the CEOP/IVE/GDP and the CEOP group. One patient was excluded because of the change of diagnosis and 3 patients withdrew informed consent before treatment in both study groups. 49 patients in the CEOP/IVE/GDP group and 49 patients in the CEOP group were included into efficacy and safety analysis as intent-to-treatment population. CRR at the end of treatment (EOT) in the CEOP/IVE/GDP group was similar as the CEOP group (36.7% vs. 32.7%, OR 0.84, 95% CI 0.36-1.88; p=0.835), while overall response rate (ORR) at EOT was higher in the CEOP/IVE/GDP group (73.5% vs. 51.0%, OR 0.38, 95% CI 0.17-0.86; p=0.037). There was no difference in median progression-free survival (15.4 months [95% CI 9.8-21.1] vs 10.7 months [4.5-16.8]; HR 0.73, 95% CI 0.45-1.18; p=0.20) or overall survival (24.3 months [95% CI 17.0-31.6] vs 21.9 months [7.5-36.2]; HR 0.69, 95% CI 0.41-1.17; p=0.17) between the CEOP/IVE/GDP and the CEOP group. Grade 3-4 hematological and non-hematological adverse events were similar between two study groups. Interpretation CEOP/IVE/GDP regimen showed similar CRR at EOT as CEOP regimen in PTCL. Nevertheless, CEOP/IVE/GDP increased ORR at EOT and could potentially bridge more patients to hematopoietic stem cell transplantation. Disclosures No relevant conflicts of interest to declare.


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