Targeting radioimmunotherapy of hepatocellular carcinoma with iodine (131I) metuximab injection: Clinical Phase I/II trials

Zhi Nan Chen, Li Mi, Jing Xu, Fei Song, Qing Zhang, Zheng Zhang, Jin Liang Xing, Hui Jie Bian, Jian Li Jiang, Xian Hui Wang, Peng Shang, Ai Rong Qian, Si He Zhang, Ling Li, Yu Li, Qiang Feng, Xiao Ling Yu, Yuan Feng, Xiang Min Yang, Rong TianZhen Biao Wu, Nan Leng, Ting Shu Mo, An Ren Kuang, Tian Zhi Tan, Yun Chun Li, De Rong Liang, Wu Sheng Lu, Jia Miao, Guo Hui Xu, Zhi Hui Zhang, Ke Jun Nan, Jun Han, Qing Guang Liu, Hong Xin Zhang, Ping Zhu

Research output: Contribution to journalArticlepeer-review

151 Scopus citations

Abstract

Purpose: HAb18G/CD147 is a hepatocellular carcinoma (HCC)-associated antigen. We developed iodine (131I) metuximab injection (Licartin), a novel 131I-labeled HAb18G/CD147-specific monoclonal antibody F(ab')2 fragment, and evaluated its safety, pharmacokinetics, and clinical efficacy on HCC in Phase I/II trials. Methods and Materials: In a Phase I trial, 28 patients were randomly assigned to receive the injection in 9.25-, 18.5-, 27.75-, or 37-MBq/kg doses by hepatic artery infusion. In a multicenter Phase II trial, 106 patients received the injection (27.75 MBq/kg) on Day 1 of a 28-day cycle. Response rate and survival rate were the endpoints. Results: No life-threatening toxic effects were found. The safe dosage was 27.75 MBq/kg. The blood clearance fitted a biphasic model, and its half-life was 90.56-63.93 h. In the Phase II trial, the injection was found to be targeted and concentrated to tumor tissues. Of the 73 patients completing two cycles, 6 (8.22%) had a partial response, 14 (19.18%) minor response, and 43 (58.90%) stable disease. The 21-month survival rate was 44.54%. The survival rate of progression-free patients was significantly higher than that of patients with progressive disease after either one or two cycles (p < 0.0001 or p = 0.0019). Conclusion: Iodine (131I) metuximab injection is safe and active for HCC patients.

Original languageEnglish
Pages (from-to)435-444
Number of pages10
JournalInternational Journal of Radiation Oncology Biology Physics
Volume65
Issue number2
DOIs
StatePublished - 1 Jun 2006
Externally publishedYes

Keywords

  • Clinical trial
  • HAb18G/CD147
  • Hepatocellular carcinoma
  • Monoclonal antibody
  • Radioimmunotherapy

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