|   | |
| Names | |
|---|---|
| Preferred IUPAC name N-(3,3-Dimethyl-2,3-dihydro-1H-indol-6-yl)-2-{[(pyridin-4-yl)methyl]amino}pyridine-3-carboxamide | |
| Other names AMG 706 | |
| Identifiers | |
| 3D model (JSmol) | |
| ChEMBL | |
| ChemSpider | |
|  PubChem CID | |
| UNII | |
|  CompTox Dashboard (EPA) | |
| 
 | |
| 
 | |
| Properties | |
| C22H23N5O | |
| Molar mass | 373.460 g·mol−1 | 
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Motesanib (AMG 706) is an experimental drug candidate originally developed by Amgen [1] but later investigated by the Takeda Pharmaceutical Company. It is an orally administered small molecule belonging to angiokinase inhibitor class which acts as an antagonist of VEGF receptors, platelet-derived growth factor receptors, and stem cell factor receptors. [2] It is used as the phosphate salt motesanib diphosphate. After clinical trials in thyroid cancer, non-small cell lung cancer, gastrointestinal stromal cancer, colorectal cancer, and breast cancer, the drug was not found to show sufficient efficacy for further development, and development was abandoned by Takeda. [3]
Motesanib was originally investigated for effectiveness against advanced nonsquamous non-small-cell lung cancer (NSCLC), with Phase II trials indicating an effectiveness comparable to bevacizumab when they were both used in combination with paclitaxel/carboplatin. [4] However a later and more detailed Phase III trial failed to show any benefit for the treatment of NSCLC. [2] [5] A second Phase III trial was started in 2012, [6] which focused on patients from Asian backgrounds (performed on the basis of subgroup analysis) [7] however this also failed to meet its primary endpoint. [8]
The drug has undergone a Phase II evaluation as first-line therapy for breast cancer [2] however this study found no evidence to support further investigation. [9] Phase II testing against persistent or recurrent ovarian, fallopian tube and primary peritoneal carcinomas was also unsuccessful. [10] Two phase II clinical trials for thyroid cancer showed promising results. [11] [12] [13]
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