Journal
EXPERT OPINION ON INVESTIGATIONAL DRUGS
Volume 26, Issue 6, Pages 751-759Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13543784.2017.1318847
Keywords
Breast cancer; BRCA1/2; BRCAness; olaparib; PARP inhibitors
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Introduction: Basal-like breast cancer is characterized by being triple negative and aggressive. Defects in DNA repair is a promising therapeutic target as BRCA alterations are found in 11 to 42% of these tumors, with a frequency varying according to family history and ethnicity. The oral PARP inhibitors exploit this deficiency through a synthetic lethality and are considered as promising anticancer therapies, especially in patients harboring BRCA1 or BRCA 2 mutations.Areas covered: Olaparib is one of the most widely investigated PARP inhibitors. Here, the preclinical data, completed clinical trials and ongoing investigations are discussed.Expert opinion: PARP inhibitors show promising results in breast cancer. However, several issues are raised including the identification of biomarkers to predict treatment response and strategies to counteract emerging resistance. Moreover, the results from ongoing phase III trials of olaparib in breast cancer are still awaited.
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