| Monoclonal antibody | |
|---|---|
| Type | Whole antibody |
| Source | Human |
| Target | IGF-1 receptor |
| Clinical data | |
| Routes of administration | IV |
| ATC code |
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| Identifiers | |
| CAS Number | |
| ChemSpider |
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| UNII | |
| KEGG | |
| Chemical and physical data | |
| Formula | C6500H10052N1724O2036S44 |
| Molar mass | 146336.59 g·mol−1 |
| | |
Cixutumumab (IMC-A12) is a human monoclonal antibody for the treatment of solid tumors. [1] [2]
This drug was developed by ImClone Systems, since acquired by Eli Lilly, using phage display technology from Dyax.[ citation needed ]
It is a fully human IgG1 monoclonal antibody directed against the human insulin-like growth factor-1 receptor (IGF-1R) with potential antineoplastic activity. Cixutumumab selectively binds to membrane-bound IGF-1R, thereby preventing the binding of the ligand IGF-1 and subsequent activation of PI3K/AKT signaling pathway. Downregulation of the PI3K/AKT survival pathway may result in the induction of cancer cell apoptosis and may decrease cancer cellular proliferation. IGF-1R, a receptor tyrosine kinase of the insulin receptor superfamily overexpressed by many cancer cell types, stimulates cell proliferation, enables oncogenic transformation, and suppresses apoptosis; IGF-1R signaling has been implicated in tumorigenesis and metastasis. [3]
Phase II clinical trials have been completed in patients with non-small cell lung cancer, [4] [5] [6] metastatic rhabdomyosarcoma, [7] metastatic prostate cancer, [8] metastatic pancreatic cancer, [9] metastatic esophageal cancer, [10] bone cancer, [11] sarcoma, [12] solid tumors, [13] ocular melanoma, [14] hepatocellular carcinoma, [15] [16] breast cancer [17] and other forms of cancer. Despite these extensive trials, more than 45 phase I and II clinical trials in total, phase III trials have never been undertaken and Eli Lilly has removed cixutumumab from their development pipeline. [18]