1. BRCA2 reversion mutation confers resistance to olaparib in breast cancer.
- Author
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Yamamoto, Shinya, Kawashima, Kei, Fujiwara, Yoshie, Adachi, Shoko, Narui, Kazutaka, Hosaka, Chiaki, Takahashi, Rina, Tsuyuki, Sho, Sugimori, Makoto, Tanoshima, Miki, Sasamoto, Mahato, Oshi, Masanori, Yamada, Akimitsu, Kunisaki, Chikara, and Endo, Itaru
- Subjects
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BRCA genes , *OLAPARIB , *BREAST cancer , *MISSENSE mutation , *GENETIC mutation - Abstract
Key Clinical Message: A rare missense mutation was identified as a reversion mutation using cancer genomic profiling and a suspected mechanism underlying resistance to olaparib in breast cancer. A 34‐year‐old woman with breast cancer and BRCA2: p.Gln3047Ter was treated with olaparib. After tumor progression, cancer genomic profiling testing using liquid biopsy revealed BRCA2 p.Gln3047Ter and p.Gln3047Tyr, with 48.9% and 0.37% allele frequency, respectively. These findings shed light on reversion mutation as a mechanism of resistance to olaparib in breast cancer. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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