 | |
| Clinical data | |
|---|---|
| Trade names | Onzeald |
| Other names | NKTR-102 |
| Routes of administration | Intravenous infusion |
| ATC code | |
| Pharmacokinetic data | |
| Protein binding | none |
| Metabolites | irinotecan and its metabolites |
| Elimination half-life | 38 days |
| Excretion | mostly via kidneys |
| Identifiers | |
| CAS Number | |
| PubChem CID | |
| DrugBank | |
| UNII | |
| KEGG | |
| Chemical and physical data | |
| Formula | C153H176N20O36[C8H16O4]n (n≈113) |
| Molar mass | 20,900–24,900 g/mol [1] |
| 3D model (JSmol) | |
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Etirinotecan pegol (trade name Onzeald) is a drug developed by Nektar Therapeutics for the treatment of certain kinds of breast cancer with brain metastases. The European Medicines Agency refused to grant it a marketing authorisation in 2017. [2]
It works as a topoisomerase I inhibitor. [3] Chemically, it consists of four units of irinotecan (a topoisomerase I inhibitor in use since the late 1990s [4] ) linked by carboxymethyl glycine and polyethylene glycol (PEG) chains to a central pentaerythritol ether, resulting in a much longer biological half-life (38 days) than that of irinotecan. It is formulated as a dihydrochloride and with 1.2 units of trifluoroacetate. [1]
