CD133-directed CAR T cells for advanced metastasis malignancies: A phase I trial

作者：Yao Wang, Meixia Chen, Zhiqiang Wu, Chuan Tong, Hanren Dai, Yelei Guo, Yang Liu, Jianhua Huang, Haiyan Lv, Can Luo, Kaichao Feng, Qingming Yang, Xiaolei Li, Weidong Han · 发表于：OncoImmunology · 年份：2018 · DOI：10.1080/2162402x.2018.1440169 · 被引用次数：334 · 研究领域：CAR-T cell therapy research、Immunotherapy and Immune Responses、Cancer Cells and Metastasis

Expressed by cancer stem cells of various epithelial cell origins, CD133 is an attractive therapeutic target for cancers. Autologous chimeric antigen receptor-modified T-cell directed CD133 (CART-133) was first tested in this trial. The anti-tumor specificity and the postulated toxicities of CART-133 were first assessed. Then, we conducted a phase I clinical study in which patients with advanced and CD133-positive tumors received CART-133 cell-infusion. We enrolled 23 patients (14 with hepatocellular carcinoma [HCC], 7 with pancreatic carcinomas, and 2 with colorectal carcinomas). The 8 initially enrolled patients with HCC were treated by a CART-133 cell dose escalation scheme (0.05–2 × 106/kg). The higher CAR-copy numbers and its reverse relationship with the count of CD133+ cells in peripheral blood led to the determination of an acceptable cell dose is 0.5–2 × 106/kg and reinfusion cycle in 23 patients. The primary toxicity is a decrease in hemoglobin/platelet (≤ grade 3) that is self-recovered within 1 week. Of 23 patients, three achieved partial remission, and 14 achieved stable disease. The 3-month disease control rate was 65.2%, and the median progression-free survival was 5 months. Repeated cell infusions seemed to provide a longer period of disease stability, especially in patients who achieved tumor reduction after the first cell-infusion. 21 out of 23 patients had not developed detectable de novo lesions during this term. Analysis of biopsied tissues by immunohisto...