Clinical Outcomes of Genotype-Matched Therapy for Recurrent Gynecological Cancers: A Single Institutional Experience

Recent advances in next-generation sequencing and genome medicine have contributed to treatment decisions in patients with cancer. Most advanced gynecological cancers develop resistance to chemotherapy and have a poor prognosis. Therefore, we conducted genomic tests in gynecological tumors to examin...

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Bibliographic Details
Main Authors: Kiyoka Sawada, Kentaro Nakayama, Kohei Nakamura, Yuki Yoshimura, Sultana Razia, Masako Ishikawa, Hitomi Yamashita, Tomoka Ishibashi, Seiya Sato, Satoru Kyo
Format: Article
Language:English
Published: MDPI AG 2021-10-01
Series:Healthcare
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Online Access:https://www.mdpi.com/2227-9032/9/10/1395
Description
Summary:Recent advances in next-generation sequencing and genome medicine have contributed to treatment decisions in patients with cancer. Most advanced gynecological cancers develop resistance to chemotherapy and have a poor prognosis. Therefore, we conducted genomic tests in gynecological tumors to examine the efficacy and clinical feasibility of genotype-matched therapy. Target sequencing was performed in 20 cases of gynecological cancers (cervical cancer, 6; endometrial cancer, 6; and ovarian cancer, 6). Both actionable and druggable genes were identified in 95% (19/20) of the cases. Among them, seven patients (35%) received genotype-matched therapy, which was effective in three patients. Of the three patients, one patient with a <i>PTEN</i> mutation received everolimus, another patient with a <i>TSC2</i> mutation received everolimus and letrozole, and the patient with a <i>BRIP1</i> mutation received olaparib. Subsequently, disease control in these three patients lasted for more than half a year. However, all patients relapsed between 9 and 13 months after the initiation of genotype-matched therapy. In this study, the response rate of genotype-matched therapy was 43% (3/7), which may have contributed to improved prognoses. Therefore, genotype-matched therapies may help patients with refractory gynecological cancers achieve better outcomes.
ISSN:2227-9032