Olaparib
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| Trade names | Lynparza |
| Routes of administration |
Oral |
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| ECHA InfoCard | 100.170.811 |
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| Formula | C24H23FN4O3 |
| Molar mass | 435.08 g/mol |
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Olaparib (AZD-2281, trade name Lynparza) is an FDA-approved targeted therapy for cancer, developed by KuDOS Pharmaceuticals and later by AstraZeneca. It is a PARP inhibitor, inhibiting poly ADP ribose polymerase (PARP), an enzyme involved in DNA repair. It acts against cancers in people with hereditary BRCA1 or BRCA2 mutations, which include some ovarian, breast, and prostate cancers. In December 2014, olaparib was approved for use as a single agent by the EMA and the FDA. The FDA approval is in for germline BRCA mutated (gBRCAm) advanced ovarian cancer that has received three or more prior lines of chemotherapy.
Olaparib acts as an inhibitor of the enzyme poly ADP ribose polymerase (PARP), and is termed a PARP inhibitor. BRCA1/2 mutations may be genetically predisposed to development of some forms of cancer, and may be resistant to other forms of cancer treatment. However, these cancers sometimes have a unique vulnerability, as the cancer cells have increased reliance on PARP to repair their DNA and enable them to continue dividing. This means that drugs which selectively inhibit PARP may be of benefit if the cancers are susceptible to this treatment.
Phase I clinical trials showed activity in advanced breast, ovarian and prostate cancers which were no longer responding to previous therapy, including a castration-resistant prostate cancer that responded for several years; activity was seen particularly in ovarian cancer.
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