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Overcoming PD-1 Blockade Resistance with CpG-A Toll-Like Receptor 9 Agonist Vidutolimod in Patients with Metastatic Melanoma
Cancer Discovery ( IF 28.2 ) Pub Date : 2021-12-01 , DOI: 10.1158/2159-8290.cd-21-0425
Antoni Ribas 1 , Theresa Medina 2 , John M Kirkwood 3 , Yousef Zakharia 4 , Rene Gonzalez 2 , Diwakar Davar 3 , Bartosz Chmielowski 1 , Katie M Campbell 1 , Riyue Bao 3 , Heather Kelley 5 , Aaron Morris 5 , David Mauro 5 , James E Wooldridge 5 , Jason J Luke 3 , George J Weiner 4 , Arthur M Krieg 5 , Mohammed M Milhem 4
Affiliation  

Patients with advanced melanoma that is resistant to PD-1 blockade therapy have limited treatment options. Vidutolimod (formerly CMP-001), a virus-like particle containing a CpG-A Toll-like receptor 9 (TLR9) agonist, may reverse PD-1 blockade resistance by triggering a strong IFN response to induce and attract antitumor T cells. In the dose-escalation part of this phase Ib study, vidutolimod was administered intratumorally at escalating doses with intravenous pembrolizumab to 44 patients with advanced melanoma who had progressive disease or stable disease on prior anti–PD-1 therapy. The combination of vidutolimod and pembrolizumab had a manageable safety profile, and durable responses were observed in 25% of patients, with tumor regression in both injected and noninjected lesions, including visceral lesions. Patients who responded to vidutolimod and pembrolizumab had noninflamed tumors at baseline and induction of an IFNγ gene signature following treatment, as well as increased systemic expression of the IFN-inducible chemokine CXCL10. Significance: In this phase Ib study in patients with advanced melanoma, intratumoral TLR9 agonist vidutolimod in combination with pembrolizumab had a manageable safety profile and showed promising clinical activity, supporting the further clinical development of vidutolimod to overcome PD-1 blockade resistance through induction of an IFN response. See related commentary by Sullivan, [p. 2960][1] . This article is highlighted in the In This Issue feature, [p. 2945][2] [1]: /lookup/volpage/11/2960?iss=12 [2]: /lookup/volpage/11/2945?iss=12

中文翻译:

用 CpG-A Toll 样受体 9 激动剂 Vidutolimod 克服转移性黑色素瘤患者的 PD-1 阻断耐药性

对 PD-1 阻断治疗有抵抗力的晚期黑色素瘤患者的治疗选择有限。Vidutolimod(以前称为 CMP-001)是一种病毒样颗粒,含有 CpG-A Toll 样受体 9 (TLR9​​) 激动剂,可通过触发强烈的 IFN 反应来诱导和吸引抗肿瘤 T 细胞来逆转 PD-1 阻断抗性。在这项 Ib 期研究的剂量递增部分,对 44 名接受过抗 PD-1 治疗后疾病进展或病情稳定的晚期黑色素瘤患者,以递增剂量的静脉内 pembrolizumab 肿瘤内给药 vidutolimod。vidutolimod 和 pembrolizumab 的组合具有可控的安全性,在 25% 的患者中观察到持久反应,注射和非注射病变(包括内脏病变)均出现肿瘤消退。对 vidutolimod 和 pembrolizumab 有反应的患者在基线时具有非炎症性肿瘤,并且在治疗后诱导了 IFNγ 基因特征,以及 IFN 诱导型趋化因子 CXCL10 的全身表达增加。意义:在这项针对晚期黑色素瘤患者的 Ib 期研究中,肿瘤内 TLR9 激动剂 vidutolimod 与 pembrolizumab 联用具有可控的安全性,并显示出有希望的临床活性,支持 vidutolimod 的进一步临床开发,以通过诱导干扰素反应。见 Sullivan 的相关评论,[p. 2960][1]。本文在 In This Issue 功能中突出显示,[p. 2945][2] [1]:/lookup/volpage/11/2960?iss=12 [2]:/lookup/volpage/11/2945?iss=12 以及 IFN 诱导的趋化因子 CXCL10 的全身表达增加。意义:在这项针对晚期黑色素瘤患者的 Ib 期研究中,肿瘤内 TLR9 激动剂 vidutolimod 与 pembrolizumab 联用具有可控的安全性,并显示出有希望的临床活性,支持 vidutolimod 的进一步临床开发,以通过诱导干扰素反应。见 Sullivan 的相关评论,[p. 2960][1]。本文在 In This Issue 功能中突出显示,[p. 2945][2] [1]:/lookup/volpage/11/2960?iss=12 [2]:/lookup/volpage/11/2945?iss=12 以及 IFN 诱导的趋化因子 CXCL10 的全身表达增加。意义:在这项针对晚期黑色素瘤患者的 Ib 期研究中,肿瘤内 TLR9 激动剂 vidutolimod 与 pembrolizumab 联用具有可控的安全性,并显示出有希望的临床活性,支持 vidutolimod 的进一步临床开发,以通过诱导干扰素反应。见 Sullivan 的相关评论,[p. 2960][1]。本文在 In This Issue 功能中突出显示,[p. 2945][2] [1]:/lookup/volpage/11/2960?iss=12 [2]:/lookup/volpage/11/2945?iss=12 支持 vidutolimod 的进一步临床开发,以通过诱导 IFN 反应克服 PD-1 阻断抗性。见 Sullivan 的相关评论,[p. 2960][1]。本文在 In This Issue 功能中突出显示,[p. 2945][2] [1]:/lookup/volpage/11/2960?iss=12 [2]:/lookup/volpage/11/2945?iss=12 支持 vidutolimod 的进一步临床开发,以通过诱导 IFN 反应克服 PD-1 阻断抗性。见 Sullivan 的相关评论,[p. 2960][1]。本文在 In This Issue 功能中突出显示,[p. 2945][2] [1]:/lookup/volpage/11/2960?iss=12 [2]:/lookup/volpage/11/2945?iss=12
更新日期:2021-12-02
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