| Description |
Dacomitinib is a selective and irreversible inhibitor of EGFR. It is a drug candidate for the treatment of non-small cell lung carcinoma. It is current under the Phase III clinical trials. It also shows potential for the treatment of HER-2 amplified breast cancer cells lines that are resistant to trastuzumab and lapatinib. |
| Biological activity |
Dacomitibib (Dacomitinib, PF299804) is an effective and irreversible pan-ErbB inhibitor that is most effective in EGFR, with an IC50 of 6 nM. It is also highly effective in NSCLCs that carries EGFR or ERBB2 mutants (against Gefitinib) and EGFR T790M mutant. Phase 2.
Dacomitinib is taken orally once-daily. It is an irreversible inhibitor of HER-1 (EGFR), HER-2 and HER-4 tyrosine kinases. Dacomitinib targets multiple receptors of the HER pathway, whereas currently marketed HER-1 (EGFR) inhibitors for non-small cell lung cancer (NSCLC) target only one receptor in this pathway,developed by Pfizer. |
| Clinical Study |
Dacomitinib has advanced to several Phase III clinical trials. The results of the first trials were disappointing, with a failure to meet the study goals, Additional Phase III trials are ongoing.
Clinical evaluation of dacomitinib is ongoing in a number of clinical trials in patients with advanced NSCLC across lines of therapies and a range of histologies and molecular subtypes, such as EGFR and KRAS status.
Additionally, there is an ongoing clinical trial evaluating dacomitinib in recurrent and/or metastatic (RM) squamous cell carcinoma of the head and neck (SCCHN). |
| References |
Ellis, Peter M,, et al. "Dacomitinib compared with placebo in pretreated patients with advanced or metastatic non-small-cell lung cancer (NCIC CTG BR.26): a double-blind, randomised, phase 3 trial. " Lancet Oncology 15.12(2014):1379.
Kalous, O, et al. "Dacomitinib (PF-00299804), an irreversible Pan-HER inhibitor, inhibits proliferation of HER2-amplified breast cancer cell lines resistant to trastuzumab and lapatinib. " Molecular Cancer Therapeutics11.9(2012):1978.
https://en.wikipedia.org/wiki/Dacomitinib |
| Uses |
PF299804 is a potent, irreversible pan-ErbB inhibitor against ErbB1, ErbB2 and ErbB4 with IC50 of 6 nM, 45.7 nM and 73.7 nM, respectively. |
| Definition |
ChEBI: A member of the class of quinazolines that is 7-methoxyquinazoline-4,6-diamine in which the amino group at position 4 is substituted by a 3-chloro-4-fluorophenyl group and the amino group at position 6 is substituted by an (E)-4-(piperidin 1-yl)but-2-enoyl group. |
China
