個性化新抗原結合抗PD1療法的Ib期臨床實驗結果
作者:
小柯機器人發布時間:2020/10/17 22:51:44
美國BioNTech公司Lakshmi Srinivasan和達納·法伯癌症研究所Patrick A. Ott課題組合作取得一項新突破。他們的最新研究展示了個性化新抗原附加抗PD-1療法在晚期黑色素瘤、非小細胞肺癌或膀胱癌患者中Ib期臨床實驗的結果。這一研究成果於2020年10月15日發表在國際學術期刊《細胞》上。
在本研究中,研究人員展示了首個開放性針對晚期黑素瘤、非小細胞肺癌或膀胱癌患者的個性化新抗原疫苗NEO-PV-01結合PD-1阻斷療法Ib期的臨床試驗結果。對82位患者的分析表明該方案是安全的並且未觀察到與治療相關的嚴重不良事件。
在所有患者接種疫苗後均能觀察到針對新生抗原特異性的CD4+和CD8+ T細胞反應。疫苗誘導具有細胞毒性的T細胞,其能夠轉運至腫瘤並介導細胞殺傷。另外,在疫苗接種後誘導的新抗原表位不包括在疫苗中。這些數據支持該方案在晚期實體瘤患者中的安全性和免疫原性。
據介紹,新抗原來源於癌細胞中的突變,這是T細胞介導抗腫瘤免疫力的重要靶點。
附:英文原文
Title: A Phase Ib Trial of Personalized Neoantigen Therapy Plus Anti-PD-1 in Patients with Advanced Melanoma, Non-small Cell Lung Cancer, or Bladder Cancer
Author: Patrick A. Ott, Siwen Hu-Lieskovan, Bartosz Chmielowski, Ramaswamy Govindan, Aung Naing, Nina Bhardwaj, Kim Margolin, Mark M. Awad, Matthew D. Hellmann, Jessica J. Lin, Terence Friedlander, Meghan E. Bushway, Kristen N. Balogh, Tracey E. Sciuto, Victoria Kohler, Samantha J. Turnbull, Rana Besada, Riley R. Curran, Benjamin Trapp, Julian Scherer, Asaf Poran, Dewi Harjanto, Dominik Barthelme, Ying Sonia Ting, Jesse Z. Dong, Yvonne Ware, Yuting Huang, Zhengping Huang, Amy Wanamaker, Lisa D. Cleary, Melissa A. Moles, Kelledy Manson, Joel Greshock, Zakaria S. Khondker, Ed Fritsch, Michael S. Rooney, Mark DeMario, Richard B. Gaynor, Lakshmi Srinivasan
Issue&Volume: 2020/10/15
Abstract: Neoantigens arise from mutations in cancer cells and are important targets of T cell-mediated anti-tumor immunity. Here, we report the first open-label, phase Ib clinical trial of a personalized neoantigen-based vaccine, NEO-PV-01, in combination with PD-1 blockade in patients with advanced melanoma, non-small cell lung cancer, or bladder cancer. This analysis of 82 patients demonstrated that the regimen was safe, with no treatment-related serious adverse events observed. De novo neoantigen-specific CD4+ and CD8+ T cell responses were observed post-vaccination in all of the patients. The vaccine-induced T cells had a cytotoxic phenotype and were capable of trafficking to the tumor and mediating cell killing. In addition, epitope spread to neoantigens not included in the vaccine was detected post-vaccination. These data support the safety and immunogenicity of this regimen in patients with advanced solid tumors (Clinicaltrials.gov: NCT02897765).
DOI: 10.1016/j.cell.2020.08.053
Source: https://www.cell.com/cell/fulltext/S0092-8674(20)31141-7
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