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Targeting CXCR1/2 Does Not Improve Insulin Secretion After Pancreatic Islet Transplantation: A Phase 3, Double-Blind, Randomized, Placebo-Controlled Trial in Type 1 Diabetes.
Diabetes Care ( IF 14.8 ) Pub Date : 2020-04-01 , DOI: 10.2337/dc19-1480
Paola Maffi 1 , Torbjörn Lundgren 2 , Gunnar Tufveson 3 , Ehab Rafael 4 , James A M Shaw 5 , Aaron Liew 5 , Frantisek Saudek 6 , Piotr Witkowski 7 , Karolina Golab 7 , Federico Bertuzzi 8 , Bengt Gustafsson 9 , Luisa Daffonchio 10 , Pier Adelchi Ruffini 10 , Lorenzo Piemonti 11 ,
Affiliation  

OBJECTIVE Reparixin is an inhibitor of CXCR1/2 chemokine receptor shown to be an effective anti-inflammatory adjuvant in a pilot clinical trial in allo-transplant recipients. RESEARCH DESIGN AND METHODS A phase 3, multicenter, randomized, double-blind, parallel-assignment study (NCT01817959) was conducted in recipients of islet allo-transplants randomized (2:1) to reparixin or placebo in addition to immunosuppression. Primary outcome was the area under the curve (AUC) for C-peptide during the mixed-meal tolerance test at day 75 ± 5 after the first and day 365 ± 14 after the last transplant. Secondary end points included insulin independence and standard measures of glycemic control. RESULTS The intention-to-treat analysis did not show a significant difference in C-peptide AUC at both day 75 (27 on reparixin vs. 18 on placebo, P = 0.99) and day 365 (24 on reparixin vs. 15 on placebo, P = 0.71). There was no statistically significant difference between treatment groups at any time point for any secondary variable. Analysis of patient subsets showed a trend for a higher percentage of subjects retaining insulin independence for 1 year after a single islet infusion in patients receiving reparixin, as compared with patients receiving placebo (26.7% vs. 0%, P = 0.09) when antithymocyte globulin was used as induction immunosuppression. CONCLUSIONS In this first double-blind randomized trial, islet transplantation data obtained with reparixin do not support a role of CXCR1/2 inhibition in preventing islet inflammation-mediated damage.

中文翻译:

靶向胰岛胰岛移植后,CXCR1 / 2不能改善胰岛素分泌:1型糖尿病的3期,双盲,随机,安慰剂对照试验。

目的Reparixin是CXCR1 / 2趋化因子受体的抑制剂,在同种异体移植接受者的一项临床试验中显示它是一种有效的抗炎佐剂。研究设计与方法对胰岛同种异体移植的接受者(除免疫抑制外)随机分配(2:1)瑞帕新或安慰剂,进行了一项三阶段,多中心,随机,双盲,平行分配研究(NCT01817959)。主要结局是在首次进食后75±5天和最后一次移植后365±14天的混合膳食耐受性测试期间C肽的曲线下面积(AUC)。次要终点包括胰岛素独立性和血糖控制的标准措施。结果意向性治疗分析在第75天和第二天均未显示C肽AUC的显着差异(reparixin为27,安慰剂为18,P = 0。99天)和第365天(reparixin上为24,安慰剂上为15,P = 0.71)。在任何时间点,任何次要变量在治疗组之间均无统计学上的显着差异。对患者亚组的分析显示,与接受抗胸腺细胞球蛋白治疗的安慰剂患者相比,接受reparixin的患者在单次胰岛输注后保​​持胰岛素独立性1年的受试者比例有上升的趋势(26.7%vs. 0%,P = 0.09)被用作诱导免疫抑制。结论在该第一项双盲随机试验中,使用瑞帕新获得的胰岛移植数据不支持CXCR1 / 2抑制作用在预防胰岛炎症介导的损害中的作用。在任何时间点,任何次要变量在治疗组之间均无统计学上的显着差异。对患者亚组的分析显示,与接受抗胸腺细胞球蛋白治疗的安慰剂患者相比,接受reparixin的患者在单次胰岛输注后保​​持胰岛素独立性1年的受试者比例有上升的趋势(26.7%vs. 0%,P = 0.09)被用作诱导免疫抑制。结论在该第一项双盲随机试验中,使用瑞帕新获得的胰岛移植数据不支持CXCR1 / 2抑制作用在预防胰岛炎症介导的损害中的作用。在任何时间点,任何次要变量在治疗组之间均无统计学上的显着差异。对患者亚组的分析显示,与接受抗胸腺细胞球蛋白治疗的安慰剂患者相比,接受reparixin的患者在单次胰岛输注后保​​持胰岛素独立性1年的受试者比例有上升的趋势(26.7%vs. 0%,P = 0.09)被用作诱导免疫抑制。结论在该第一项双盲随机试验中,使用瑞帕新获得的胰岛移植数据不支持CXCR1 / 2抑制作用在预防胰岛炎症介导的损害中的作用。当使用抗胸腺细胞球蛋白作为诱导免疫抑制剂时,与接受安慰剂的患者相比(26.7%vs. 0%,P = 0.09)。结论在该第一项双盲随机试验中,使用瑞帕新获得的胰岛移植数据不支持CXCR1 / 2抑制作用在预防胰岛炎症介导的损害中的作用。当使用抗胸腺细胞球蛋白作为诱导免疫抑制剂时,与接受安慰剂的患者相比(26.7%vs. 0%,P = 0.09)。结论在该第一项双盲随机试验中,使用瑞帕新获得的胰岛移植数据不支持CXCR1 / 2抑制作用在预防胰岛炎症介导的损害中的作用。
更新日期:2020-04-20
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